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 Professional Electrician, Looking for professional electrician

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TSMrGuGuZai
post Jan 12 2021, 07:43 PM, updated 5y ago

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Any recommended electician in selangor area? i looking for professional one not like those doing renovation and self called "electrician" garbage. Recently my room's light is flickering and MCB making buzzing sound, so i call eletrician from https://www.ade-electrician.com, that guy is totally sh1t, he just turn on and off the light, then blaming the MCB amp too low and ask me to change the whole panel bla2, he dont even test the voltage or check the wiring.
fireballs
post Jan 12 2021, 07:47 PM

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The guy is probably right
TSMrGuGuZai
post Jan 12 2021, 07:56 PM

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QUOTE(fireballs @ Jan 12 2021, 07:47 PM)
The guy is probably right
*
i did change all the stuff will same problem.
SUSceo684
post Jan 12 2021, 08:34 PM

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Buzzing sound means loose contact. Loose connection cause fires. You can try DIY but test w test pen while still live to confirm test pen not spoiled, shut off everything in DB, test w test pen to confirm off. Then use screwdriver open up the buzzing MCB wire and retighten it firm so wont be able to tug wire out, but not until kopak dua cow strength.
SUSceo684
post Jan 12 2021, 08:35 PM

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QUOTE(MrGuGuZai @ Jan 12 2021, 07:56 PM)
i did change all the stuff will same problem.
*
Have you identified exactly which mcb n which socket or appliance cause the buzzing?
fireballs
post Jan 12 2021, 10:26 PM

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take a photo of your db panel

the buzzing is likely from loose contact. the loose contact will start causing heat, then burn the mcb. usually one mcb charring will trigger the rest if not fix immediately.

if u use those cap ayam one lagi facepalm

take the opportunity to review your protections against accidental touch/electrocution too
SUSceo684
post Jan 12 2021, 10:34 PM

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QUOTE(MrGuGuZai @ Jan 12 2021, 07:43 PM)
Any recommended electician in selangor area? i looking for professional one not like those doing renovation and self called "electrician" garbage. Recently my room's light is flickering and MCB making buzzing sound, so i call eletrician from https://www.ade-electrician.com, that guy is totally sh1t, he just turn on and off the light, then blaming the MCB amp too low and ask me to change the whole panel bla2, he dont even test the voltage or check the wiring.
*
Can you state what type of light exactly?
if you are running the old flourescent light using choke the choke can also wear out over time - time to change to electronic ballast. Few bucks only.

Or if you are running halogens on transformer/cheapo LED (less likely to flicker) driver going bad also may be source of this.

QUOTE(fireballs @ Jan 12 2021, 10:26 PM)
take a photo of your db panel

the buzzing is likely from loose contact. the loose contact will start causing heat, then burn the mcb. usually one mcb charring will trigger the rest if not fix immediately. 

if u use those cap ayam one lagi facepalm

take the opportunity to review your protections against accidental touch/electrocution too
*
Need to see if the brand can pakai or totally no SIRIM crap.
fireballs
post Jan 12 2021, 10:39 PM

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sirim chop is good. but those with chop merely comply to bare minimum spec.
i dont trust those rm3 breakers. seriously.. the component also cost more than rm3

This post has been edited by fireballs: Jan 12 2021, 10:41 PM
SUSceo684
post Jan 12 2021, 10:42 PM

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QUOTE(fireballs @ Jan 12 2021, 10:39 PM)
sirim chop is good. but those with chop merely comply to bare minimum spec.
i dont trust those rm3 breakers. seriously.. the component also cost more than rm3
*
I have seen all sorts of unknown no-SIRIM, questionable with SIRIM but China made barely passing brands to top tier LV equipment brands (ABB, Hager, Schneider, Siemens). Also in Msia mostly using C curve MCB which is very tolerant to overloading so if something really short out really is a big problem for sure laugh.gif

This post has been edited by ceo684: Jan 12 2021, 10:45 PM
fireballs
post Jan 12 2021, 10:57 PM

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QUOTE(ceo684 @ Jan 12 2021, 10:42 PM)
I have seen all sorts of unknown no-SIRIM, questionable with SIRIM but China made barely passing brands to top tier LV equipment brands (ABB, Hager, Schneider, Siemens). Also in Msia mostly using C curve MCB which is very tolerant to overloading so if something really short out really is a big problem for sure laugh.gif
*
well..
mcb fail = fire. still have time to escape
leak = instant death


so for those who want to save money, go for cap ayam mcb, but please make sure rcd is branded.
SUSceo684
post Jan 12 2021, 11:06 PM

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QUOTE(fireballs @ Jan 12 2021, 10:57 PM)
well..
mcb fail = fire. still have time to escape
leak = instant death
so for those who want to save money, go for cap ayam mcb, but please make sure rcd is branded.
*
Ideally all should be same brand.
In US the mfg dont cover if you use all rojak breakers.

Quality MCB only 7 bucks for 4.5kA or 8 bucks for 6kA
So even is boom also wont blow up whole place hahaha

What you said is true.. normally most of the top tier brand the cheap component MCB is made in china
But almost all the sensitive RCD (10ma/30mA) are still made in EU for better QC. Except S brand seems like everything in china one.
fireballs
post Jan 12 2021, 11:11 PM

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QUOTE(ceo684 @ Jan 12 2021, 11:06 PM)
Ideally all should be same brand.
In US the mfg dont cover if you use all rojak breakers.

Quality MCB only 7 bucks for 4.5kA or 8 bucks for 6kA
So even is boom also wont blow up whole place hahaha

What you said is true.. normally most of the top tier brand the cheap component MCB is made in china
But almost all the sensitive RCD (10ma/30mA) are still made in EU for better QC. Except S brand seems like everything in china one.
*
The s brand one...is using electronic tripping.
If voltage low, it may not trigger.
TSMrGuGuZai
post Jan 14 2021, 12:35 PM

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QUOTE(ceo684 @ Jan 12 2021, 10:34 PM)
Can you state what type of light exactly?
if you are running the old flourescent light using choke the choke can also wear out over time - time to change to electronic ballast. Few bucks only.

Or if you are running halogens on transformer/cheapo LED (less likely to flicker) driver going bad also may be source of this.
Need to see if the brand can pakai or totally no SIRIM crap.
*
Sorry for the late reply, im using 5w LED light actually, the problem is my housing wiring has too much loop, from ground floor single MCB panel loop to first floor/ whole house, the wiring pretty messed up, i think the contractor want to save money dulu, 13 years old house.

user posted image
user posted image

This post has been edited by MrGuGuZai: Jan 14 2021, 12:37 PM
TSMrGuGuZai
post Jan 14 2021, 12:36 PM

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QUOTE(fireballs @ Jan 12 2021, 10:26 PM)
take a photo of your db panel

the buzzing is likely from loose contact. the loose contact will start causing heat, then burn the mcb. usually one mcb charring will trigger the rest if not fix immediately.  

if u use those cap ayam one lagi facepalm

take the opportunity to review your protections against accidental touch/electrocution too
*
user posted image
user posted image

13 years old mcb, whole house .

This post has been edited by MrGuGuZai: Jan 14 2021, 12:36 PM
SUSceo684
post Jan 14 2021, 01:31 PM

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QUOTE(MrGuGuZai @ Jan 14 2021, 12:35 PM)
Sorry for the late reply, im using 5w LED light actually, the problem is my housing wiring has too much loop, from ground floor single MCB panel loop to first floor/ whole house, the wiring pretty messed up, i think the contractor want to save money dulu,  13 years old house.

user posted image
user posted image
*
Change whole box also not too expensive lah. Just get the parts following the existing + add 10mA RCD or RCBO to WH circuits.
Yours is single phase (not 3 phase).

1x 63A main MCB - 2P (2pole) 6kA RM51.60
https://shopee.com.my/%F0%9F%94%A5READY-STO...3048.6462998954

1x ABB RCD 63A 2P 30ma (should be made in italy) RM129.00
https://shopee.com.my/ABB-RCCB-ELCB-RCD-40A...1048.7350447835

According to ST guideline they actually specify 100+30mA two device but for me, take one unit is cheaper as the 30mA can do everything the 100mA does without compromise life protection. ONE unit main 30mA 'bao whole house' will give life protection.
Don't listen to nonsense bullshit about 30mA always trip. Some dinosaur faux electrician still want to use 100mA or 300mA so they dont need to pick up calls. These (100 or 300) are useless for life protection (imagine u tertouch live circuit when changing bulb because someone knocked the switch live, or toaster leak electricity due to faulty device). More than 50mA confirm RIP.

Attached Image

I run mine and parents' place on 30mA. What good is RCD if not sensitive enough for life protection.

many pcs at least follow existing layout now - MCB each ABB MCB 1P/6kA - for the individual C16 buy C16 as necessary how many units according to current DB layout RM7.40/each
https://shopee.com.my/ABB-MCB-1P-6kA(6A-10A...4526.6860538286
This one if you want to split the shared circuit in your DB box you can buy more according to cable size.

1x each per WH circuit -Schneider 10mA RCBO (this one just replace inline aka swap the MCB for WH circuit also can) RM100.00/each PER WH
For Water Heater Circuit should trace back that individual neutral for it and use 10mA RCD OR RCBO per water heater.
ST guideline say according to the law you need 10mA for Water Heater or wet floor places' socket. to prevent this from occurring to you: https://www.nst.com.my/news/nation/2020/08/...e-electrocution

10mA RCD need to add with the MCB. Usually for ABB 10mA RCD this ard RM170.
10mA RCBO already include the MCB inside it so you can discount off
https://shopee.com.my/SCHNEIDER-RCBO-25a-2p...1048.2774414891

Lastly change the busbar to fresh one.. 23-way like RM9.20 only
https://shopee.com.my/(READY-STOCK)-1-PCS-M...6841.5064694032
--------
Above proposed is mostly ABB parts except the WH 10mA RCBO.
Schneider stuff also can use or Hager also can. Mostly the sensitive 10mA one is expensive. Rest of components about same price for top tier brands. Then find electrician supply labour to change all the parts (parts you can source yourself better coz usually they propose cheapo brand that is not much better)

--------
To speculate why ppl die from faulty water heater
because if the main RCD is those 100 or 300mA.. this only protect for FIRE protection and not LIFE.
so main RCD cannot save you if its >50mA (almost common to see all these 100/300 useless RCD in residential). Yours also 100mA.
and then the WH circuit does NOT have 10mA (high sensitivity) RCD according to ST guideline means NOTHING is protecting LIFE.

If you have WH 10mA on WH, and a main 30mA for whole house, LIFE is protected on TWO RCD devices. So even if one fail (murphys law) you still have a backup.
Still can come back and buy me a coffee for saving your LIFE.

This post has been edited by ceo684: Jan 14 2021, 01:50 PM
clickNsnap
post Jan 14 2021, 02:27 PM

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QUOTE(ceo684 @ Jan 14 2021, 02:31 PM)
Change whole box also not too expensive lah. Just get the parts following the existing + add 10mA RCD or RCBO to WH circuits.
Yours is single phase (not 3 phase).

1x 63A main MCB - 2P (2pole) 6kA RM51.60
https://shopee.com.my/%F0%9F%94%A5READY-STO...3048.6462998954

1x ABB RCD 63A 2P 30ma (should be made in italy) RM129.00
https://shopee.com.my/ABB-RCCB-ELCB-RCD-40A...1048.7350447835

According to ST guideline they actually specify 100+30mA two device but for me, take one unit is cheaper as the 30mA can do everything the 100mA does without compromise life protection. ONE unit main 30mA 'bao whole house' will give life protection.
Don't listen to nonsense bullshit about 30mA always trip. Some dinosaur faux electrician still want to use 100mA or 300mA so they dont need to pick up calls. These (100 or 300) are useless for life protection (imagine u tertouch live circuit when changing bulb because someone knocked the switch live, or toaster leak electricity due to faulty device). More than 50mA confirm RIP.

Attached Image

I run mine and parents' place on 30mA. What good is RCD if not sensitive enough for life protection.

many pcs at least follow existing layout now - MCB each ABB MCB 1P/6kA - for the individual C16 buy C16 as necessary how many units according to current DB layout RM7.40/each
https://shopee.com.my/ABB-MCB-1P-6kA(6A-10A...4526.6860538286
This one if you want to split the shared circuit in your DB box you can buy more according to cable size.

1x each per WH circuit -Schneider 10mA RCBO (this one just replace inline aka swap the MCB for WH circuit also can) RM100.00/each PER WH
For Water Heater Circuit should trace back that individual neutral for it and use 10mA RCD OR RCBO per water heater.
ST guideline say according to the law you need 10mA for Water Heater or wet floor places' socket.  to prevent this from occurring to you: https://www.nst.com.my/news/nation/2020/08/...e-electrocution

10mA RCD need to add with the MCB. Usually for ABB 10mA RCD this ard RM170.
10mA RCBO already include the MCB inside it so you can discount off
https://shopee.com.my/SCHNEIDER-RCBO-25a-2p...1048.2774414891

Lastly change the busbar to fresh one.. 23-way like RM9.20 only
https://shopee.com.my/(READY-STOCK)-1-PCS-M...6841.5064694032
--------
Above proposed is mostly ABB parts except the WH 10mA RCBO.
Schneider stuff also can use or Hager also can. Mostly the sensitive 10mA one is expensive. Rest of components about same price for top tier brands. Then find electrician supply labour to change all the parts (parts you can source yourself better coz usually they propose cheapo brand that is not much better)

--------
To speculate why ppl die from faulty water heater
because if the main RCD is those 100 or 300mA.. this only protect for FIRE protection and not LIFE.
so main RCD cannot save you if its >50mA (almost common to see all these 100/300 useless RCD in residential). Yours also 100mA.
and then the WH circuit does NOT have 10mA (high sensitivity) RCD according to ST guideline means NOTHING is protecting LIFE.

If you have WH 10mA on WH, and a main 30mA for whole house, LIFE is protected on TWO RCD devices. So even if one fail (murphys law) you still have a backup.
Still can come back and buy me a coffee for saving your LIFE.
*
Look like my house water heater (WH) is on 100mA... not for Life protection sad.gif

Based on my MCB... can I change the o.1A to 0.03A?

Thanks in advance!

user posted image

user posted image

user posted image

This post has been edited by clickNsnap: Jan 14 2021, 09:08 PM
fireballs
post Jan 14 2021, 02:46 PM

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QUOTE(MrGuGuZai @ Jan 14 2021, 12:36 PM)
user posted image
user posted image

13 years old mcb, whole house .
*
looks recent. no need to change all lah
just power off totally,
check/smell for burnt mark
retighten all all screws
the faulty mcb just replace it with same rating. if possible, get abb/hager/schneider brand MCB
just for the time being

when u have the budget, then consider to redo to proper rating





fireballs
post Jan 14 2021, 02:48 PM

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QUOTE(clickNsnap @ Jan 14 2021, 02:27 PM)
Look like my house water heater (WH) is on 100mA... not for Life protection  sad.gif

Based on my MCB... cab I change the o.1A to 0.03A?

Thanks in advance!

user posted image

user posted image

user posted image
*
edited

the spd here is type1 for direct strike. i cant find the datasheet on this.
you may need to install a fuse to limit any current leak

you will need additional SPD type 2 to limit the voltage after a strike. most equipment wont survive a volt leak from a type 1 SPD


consider
type 1 = outdoor water filter. you wont drink from this tap
type 2 = clean filter. can shower
type 3 = cleanest can drink

This post has been edited by fireballs: Jan 14 2021, 02:57 PM
clickNsnap
post Jan 14 2021, 09:14 PM

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QUOTE(fireballs @ Jan 14 2021, 03:48 PM)
edited

the spd here is type1 for direct strike. i cant find the datasheet on this.
you may need to install a fuse to limit any current leak

you will need additional SPD type 2 to limit the voltage after a strike. most equipment wont survive a volt leak from a type 1 SPD
consider
type 1 = outdoor water filter. you wont drink from this tap
type 2 = clean filter. can shower
type 3 = cleanest can drink
*
What is the needs of additional SPD type 2? The current SPD setup serve well for now...before I install the SPD, my house gets tripped during heavy thunder storm/lighting.

Now, I am a bit of concern on my water heater... the previous post stated 100mA will not help to protect our life, change to 30mA is recommended.

Btw... what do you means... hmm.gif hmm.gif hmm.gif
consider
type 1 = outdoor water filter. you wont drink from this tap
type 2 = clean filter. can shower
type 3 = cleanest can drink

fireballs
post Jan 14 2021, 10:23 PM

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QUOTE(clickNsnap @ Jan 14 2021, 09:14 PM)
What is the needs of additional SPD type 2? The current SPD setup serve well for now...before I install the SPD, my house gets tripped during heavy thunder storm/lighting.

Now, I am a bit of concern on my water heater... the previous post stated 100mA will not help to protect our life, change to 30mA is recommended.

Btw... what do you means...  hmm.gif  hmm.gif  hmm.gif
consider
type 1 = outdoor water filter. you wont drink from this tap
type 2 = clean filter. can shower
type 3 = cleanest can drink

*
spd is like water filter
type 1 handle the large direct strike current. thats why its written there as 10/350
however, the leakage also high. means if kena strike there will be some voltage pass through the filter

thus the need of type 2 spd for 8/20 wave


those belkins/mrdiy are type 3


for water heater you need 10mA
for socket outlet is 30mA
lamps can be 100mA
clickNsnap
post Jan 15 2021, 04:48 PM

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QUOTE(fireballs @ Jan 14 2021, 11:23 PM)
spd is like water filter
type 1 handle the large direct strike current. thats why its written there as 10/350
however, the leakage also high. means if kena strike there will be some voltage pass through the filter

thus the need of type 2 spd for 8/20 wave
those belkins/mrdiy are type 3
for water heater you need 10mA
for socket outlet is 30mA
lamps can be 100mA
*
Noted, does it mean, i have to trace the WH circuit, replace the 10mA RCD, right?

Btw, my WH comes with built-in RCD...would this sufficient?

Thanks!

user posted image
SUSceo684
post Jan 15 2021, 11:12 PM

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QUOTE(clickNsnap @ Jan 14 2021, 02:27 PM)
Look like my house water heater (WH) is on 100mA... not for Life protection  sad.gif

Based on my MCB... can I change the o.1A to 0.03A?

Thanks in advance!

user posted image

user posted image

user posted image
*
Yes can direct replace the 0.1A (100mA) with 0.03 (30mA). Yours is single phase, so the main RCD it will be a 2P(oles) 63A 30mA type. This will be a direct replacement (same physical size as currently installed type)..The really fat one (RCD) is 4P (3P+N) for 3 phase wiring.

Good news, 2P RCD is still cheaper compared to 4P RCD.

For the MCB problem, you can get a same rating one as current (if faulty is C16 buy another C16 from ABB Hager Schneider to replace first).
All things AFTER main switch will be isolated as long as the main switch is off and verified with test pen.
Test pen also need to verify it lights up first, so as not to have false negative due to broken test pen.

Rule of thumb is when working with electricity, ISOLATE and TEST, TEST, TEST before touching anything.

QUOTE(clickNsnap @ Jan 15 2021, 04:48 PM)
Noted, does it mean, i have to trace the WH circuit, replace the 10mA RCD, right?

Btw, my WH comes with built-in RCD...would this sufficient?

Thanks!

user posted image
*
Yes 10mA (0.01A) is the correct rating for WH RCD. Even more importantly for countries on 230V. For life protection I only trust the top tier brands. ABB / Hager 10mA come from EU.

Most water heater tend to be ELCB based (the one could be RCD but not sure how quality it is).. there are cheap RCD out there but for 10mA i would strongly recommend a top tier brand (ABB hager schneider); schneider RCBO just over 100 only; the rest standalone about 160-170/ea. Per ST guidelines, proper standalone RCD is still recommended.

This post has been edited by ceo684: Jan 15 2021, 11:15 PM
clickNsnap
post Jan 16 2021, 08:05 PM

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QUOTE(ceo684 @ Jan 16 2021, 12:12 AM)
Yes can direct replace the 0.1A (100mA) with 0.03 (30mA). Yours is single phase, so the main RCD it will be a 2P(oles) 63A 30mA type. This will be a direct replacement (same physical size as currently installed type)..The really fat one (RCD) is 4P (3P+N) for 3 phase wiring.

Good news, 2P RCD is still cheaper compared to 4P RCD.

For the MCB problem, you can get a same rating one as current (if faulty is C16 buy another C16 from ABB Hager Schneider to replace first).
All things AFTER main switch will be isolated as long as the main switch is off and verified with test pen.
Test pen also need to verify it lights up first, so as not to have false negative due to broken test pen.

Rule of thumb is when working with electricity, ISOLATE and TEST, TEST, TEST before touching anything.
Yes 10mA (0.01A) is the correct rating for WH RCD. Even more importantly for countries on 230V. For life protection I only trust the top tier brands. ABB / Hager 10mA come from EU.

Most water heater tend to be ELCB based (the one could be RCD but not sure how quality it is).. there are cheap RCD out there but for 10mA i would strongly recommend a top tier brand (ABB hager schneider); schneider RCBO just over 100 only; the rest standalone about 160-170/ea. Per ST guidelines, proper standalone RCD is still recommended.
*
Thanks for the advises.

You mentioned "Yes can direct replace the 0.1A (100mA) with 0.03 (30mA)"....do you means i can replace the "hager 63A/100mA that i have in my current set-up?

I was thinking to trace the maxguard MCB C16/C20 that attached to the WH, replace it with branded MCB with 10mA or 30mA....will it served the protection purpose?

Btw, i will buy the parts and ask technician to help me to replace the MCB.

Any ideals what is the different for the maxguard MCB C16 and C20?

Yes, you are right, the RCD 10mA should be installed for WH, it was regulated in 1994.... but not many people is aware of this!

Checked my WH menu, there is a built-in RCD, but no specific on the spec of the RCD, not sure if it is 30mA or 100mA?

user posted image

user posted image
SUSceo684
post Jan 16 2021, 09:44 PM

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QUOTE(clickNsnap @ Jan 16 2021, 08:05 PM)
Thanks for the advises.

You mentioned "Yes can direct replace the 0.1A (100mA) with 0.03 (30mA)"....do you means i can replace the "hager 63A/100mA that i have in my current set-up?

I was thinking to trace the maxguard MCB C16/C20 that attached to the WH, replace it with branded MCB with 10mA or 30mA....will it served the protection purpose?

Btw, i will buy the parts and ask technician to help me to replace the MCB.

Any ideals what is the different for the maxguard MCB C16 and C20?

Yes, you are right, the RCD 10mA should be installed for WH, it was regulated in 1994.... but not many people is aware of this!

Checked my WH menu, there is a built-in RCD, but no specific on the spec of the RCD, not sure if it is 30mA or 100mA?

user posted image

user posted image
*
You mentioned "Yes can direct replace the 0.1A (100mA) with 0.03 (30mA)"....do you means i can replace the "hager 63A/100mA that i have in my current set-up?
Yes, replace this with 30mA main RCD (specifically 63A 2P 30mA type)

I was thinking to trace the maxguard MCB C16/C20 that attached to the WH, replace it with branded MCB with 10mA or 30mA....will it served the protection purpose? MCB and RCD operate differently (like seatbelt and reverse sensor of your car).
MCB protect against current overload (FIRE risk from cable overheating and the copper wont melt instantly but its the plastic insulation that catch on fire and so on that cause house fire).
RCD principle it operate when there is any current imbalance(whatever input current must = output current, this is normal condition. If 10A go in but 8A come out means the 2A must have got lost somewhere.. and that is what will trip RCD.. with a 10mA RCD >0.01A loss will trip. with a 30mA >0.03A loss will trip. That lost somewhere means a fault already.. whether leak here leak there leak thru human body is irrelevant..to the RCD current cannot "lost" one..same as bank teller if cash in drawer not tally with system means they need to hunt and trace every sen as any error means something wrong somewhere.

Just like seatbelt and reverse sensor both protect but they protect diff thing and operate differently, same goes to MCB vs RCD.

For RCD, it constantly compare the IN - OUT current all the time and if there is more than the acceptable loss (based on RCD sensitivity 10mA 30mA etc) it will trip.
So because it need IN vs OUT (Live vs Neutral) comparison to work, the (IN) Live one is pretty easy to determine since u off the MCB 1 by 1 to trace, and the one that (when MCB off) doesnt turn on the WH, that should be the Live WH cable.
For the (OUT) Neutral, in DB box all the black wires typically connected to the common shared neutral busbar. This one is more time consuming as u need to isolate one by one each N (take out one by one) until you find the one that doesn't operate the WH, that should be the N WH cable.
Of course do a double take and mark these (L WH) and (N WH) with tape or sticker. Then plug them back in and confirm WH works now. Successfully identified the WH L and N now.

These (WH Live) and (WH Neutral) will need to be connected into the same 10mA RCD (load side).
The (power feed) L and N on the 10mA RCD Line side, can be connected to Line L busbar and N common busbar respectively.

To answer your question.. since already open up the DB might as well replace the whole strip of MCB and RCD.
The RCDs are more pricey than a whole strip of 6ka MCBs. tongue.gif
Adding a 10mA RCD will need two slot (2-way) more space though.

Btw, i will buy the parts and ask technician to help me to replace the MCB. thumbup.gif
I was thinking from a total overhaul POV.. since adding each WH 10mA RCD will take 2-way more than existing (hence need DB box upgrade) - can also consolidate all the SPD everything into one box *subject to MCB wiring being long enough* - they do sell 36-way boxes (2 rows x 18way) - https://shopee.com.my/EPS-EL02-(2-ROW-36-WA...6357.6805234786
OR
minimally invasive one, trace back WH wiring (L and N), replace that existing MCB with RCBO (in situ). RCBO take care 2 jobs (MCB+RCD in one module size).
Attached Image

Any ideals what is the different for the maxguard MCB C16 and C20?
One trip at 16A rating, one trip at 20A rating. MCB Sizing should be based on load and cable size. Usually it should be no bigger than C20 for 2.5mm (13A socket/WH) cable, and C10 for light circuit (1.5mm) but if its dedicated light circuit putting C6 also won't harm anything (extra safety) since your lights in totality for whole house won't exceed 1000W whereby a C6 for light circuit is way more than enough already.

Yes, you are right, the RCD 10mA should be installed for WH, it was regulated in 1994.... but not many people is aware of this!
Safety of electrical installation is taken too lightly in MY. Same old story, people maybe unaware, every year also come out in the news people die from WH electrocution. Even their 13A plug can be left hanging with the LNE inner wiring exposed for few cm instead of properly fixing up the plug to grip on the outer insulation


Checked my WH menu, there is a built-in RCD, but no specific on the spec of the RCD, not sure if it is 30mA or 100mA?
Seems vague to me. In the diagram it shows a RCD at the DB box laugh.gif Err on the safe side, this is cheaper (price of RCBO/RCD from top tier brands range from 100-170) than life insurance premium.

This post has been edited by ceo684: Jan 16 2021, 10:03 PM
clickNsnap
post Jan 16 2021, 10:07 PM

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QUOTE(ceo684 @ Jan 16 2021, 10:44 PM)
You mentioned "Yes can direct replace the 0.1A (100mA) with 0.03 (30mA)"....do you means i can replace the "hager 63A/100mA that i have in my current set-up?
Yes, replace this with 30mA main RCD (specifically 63A 2P 30mA type)

I was thinking to trace the maxguard MCB C16/C20 that attached to the WH, replace it with branded MCB with 10mA or 30mA....will it served the protection purpose? MCB and RCD operate differently (like seatbelt and reverse sensor of your car).
MCB protect against current overload (FIRE risk from cable overheating and the copper wont melt instantly but its the plastic insulation that catch on fire and so on that cause house fire).
RCD principle it operate when there is any current imbalance(whatever input current must = output current, this is normal condition. If 10A go in but 8A come out means the 2A must have got lost somewhere.. and that is what will trip RCD..  with a 10mA RCD >0.01A loss will trip. with a 30mA >0.03A loss will trip. That lost somewhere means a fault already.. whether leak here leak there leak thru human body is irrelevant..to the RCD current cannot "lost" one..same as bank teller if cash in drawer not tally with system means they need to hunt and trace every sen as any error means something wrong somewhere.

Just like seatbelt and reverse sensor both protect but they protect diff thing and operate differently, same goes to MCB vs RCD.

For RCD, it constantly compare the IN - OUT current all the time and if there is more than the acceptable loss (based on RCD sensitivity 10mA 30mA etc) it will trip.
So because it need IN vs OUT (Live vs Neutral) comparison to work, the (IN) Live one is pretty easy to determine since u off the MCB 1 by 1 to trace, and the one that (when MCB off) doesnt turn on the WH, that should be the Live WH cable.
For the (OUT) Neutral, in DB box all the black wires typically connected to the common shared neutral busbar. This one is more time consuming as u need to isolate one by one each N (take out one by one) until you find the one that doesn't operate the WH, that should be the N WH cable.
Of course do a double take and mark these (L WH) and (N WH) with tape or sticker. Then plug them back in and confirm WH works now. Successfully identified the WH L and N now.

These (WH Live) and (WH Neutral) will need to be connected into the same 10mA RCD (load side).
The (power feed) L and N on the 10mA RCD Line side, can be connected to Line L busbar and N common busbar respectively.

To answer your question.. since already open up the DB might as well replace the whole strip of MCB and RCD.
The RCDs are more pricey than a whole strip of 6ka MCBs.
Adding 10mA RCD will need two slot more space though.

Btw, i will buy the parts and ask technician to help me to replace the MCB.  thumbup.gif

Any ideals what is the different for the maxguard MCB C16 and C20?
One trip at 16A rating, one trip at 20A rating. MCB Sizing should be based on load and cable size. Usually it should be no bigger than C20 for 2.5mm (13A socket/WH) cable, and C10 for light circuit (1.5mm) but if its dedicated light circuit putting C6 also won't harm anything (extra safety) since your lights in totality for whole house won't exceed 1000W whereby a C6 for light circuit is way more than enough already.

Yes, you are right, the RCD 10mA should be installed for WH, it was regulated in 1994.... but not many people is aware of this!
Safety of electrical installation is taken too lightly in MY. Same old story, people maybe unaware, every year also come out in the news people die from WH electrocution. Even their 13A plug can be left hanging with the LNE inner wiring exposed for few cm instead of properly fixing up the plug to grip on the outer insulation
Checked my WH menu, there is a built-in RCD, but no specific on the spec of the RCD, not sure if it is 30mA or 100mA?
Seems vague to me. In the diagram it shows a RCD at the DB box laugh.gif Err on the safe side, this is cheaper (price of RCBO/RCD from top tier brands range from 100-170) than life insurance premium.
*
Thanks for the details explanation.

I think i can identify which MCB for the WH, but a bit hard for me to check the Live-HW and Neutral-HW cables, unless i ask the electrician to check for me.

By changing the main RCD to 10mA or 30mA, does it means it is safe for using the WH, no need to change each MCB? But will it be too sensitive...and causing electric trip more often?

This post has been edited by clickNsnap: Jan 16 2021, 10:08 PM
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post Jan 16 2021, 10:30 PM

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QUOTE(clickNsnap @ Jan 16 2021, 10:07 PM)
Thanks for the details explanation.

I think i can identify which MCB for the WH, but a bit hard for me to check the Live-HW and Neutral-HW cables, unless i ask the electrician to check for me.

By changing the main RCD to 10mA or 30mA, does it means it is safe for  using the WH, no need to change each MCB? But will it be too sensitive...and causing electric trip more often?

Mains RCD only available up to 30mA high sensitivity. Quite safe-lah in general (like US border patrol, protect whole country border in general). Means that toaster leak or kettle leak (dry floor usage), will not die-lah since all circuit will cut at 30mA leak, human body will confirm RIP at >50mA.
WH RCD is for that 1 individual circuit very-high-sensitivity because it is 10mA. This 10mA for WH protect one circuit very closely like James Bond guard nuclear weapon, require dedicated IN-OUT (L-N tracing).

Both are safe enough to use but for max safety (wet body, wet floor) a 10mA for water heater in addition to the 30mA mains is recommended.

*
For MAINS RCD change to 30mA Bao-Kah-Liao whole house
Yes, I did this before when refreshing my 1995 DB box.
Scenario: For mains RCD change to 30mA (current ABB/Hager models selling now) they have anti nuisance trip; I think Schneider also has it.

My personal experience in parents' house: It was on 1995 era ABB 40A 4P 300mApuke.gif before this when we took over as 2nd owner. Now using ABB 40A 4P 30mA, no complains.
Result: No difference in trip problem or trip frequency for main 30mA RCD.

CONSIDERATIONS WHEN ADDING 10mA into OLDER HOMES with NO 10mA RCD
The thing about 10mA WH RCD/RCBO it will not work on shared neutral (10mA will always trip unless wholly dedicated L and N).
Just like company claim should only be for your own usage, you should not take receipts from next door diff company workers to claim into your claim submission, will trip finance_RCD laugh.gif

I face this problem before here, (my wiring was very messy as this is used apartment, previous owner do a lot of funny things, I even suspect the WH is also connected to ex-13A point or looped somewhere in the neutral)
Adding SPD and splitting shared MCB (2-3 wire into one MCB puke.gif) required more physical spacing.
End up expanded whole DB box to 36way also not enough (previously was falling apart elcheapo plastic box)
Then realised needed more than that so spill over to second DB box. 3 phase big modules really take up a lot of ways.

Solution was to run direct LNE cable from DB box to WH (so its always dedicated neutral), perfect.

CONSIDERATION WHEN REPLACING EXISTING (QUESTIONABLE CHINA MADE) 10mA RCD in NEWER HOMES
No issue just plug and play as WH Live and WH Neutral should already be on dedicated L and N.
Also easier since wires are identified already, just need to see which is load side and which is line side.
And for this (my own place) I went with big DB box (45 way) straight away to fit all the expansion upgrades like Type2 SPD and have enough room for everything (RCDs, MCBs, main switch, SPD)

This post has been edited by ceo684: Jan 16 2021, 10:43 PM
clickNsnap
post Jan 16 2021, 10:47 PM

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QUOTE(ceo684 @ Jan 16 2021, 11:30 PM)
For MAINS RCD change to 30mA Bao-Kah-Liao whole house
Yes, I did this before when refreshing my 1995 DB box.
Scenario: For mains RCD change to 30mA (current ABB/Hager models selling now) they have anti nuisance trip; I think Schneider also has it.

My personal experience in parents' house: It was on 1995 era ABB 40A 4P 300mApuke.gif before this when we took over as 2nd owner. Now using ABB 40A 4P 30mA, no complains.
Result:  No difference in trip problem or trip frequency for main 30mA RCD.

CONSIDERATIONS WHEN ADDING 10mA into OLDER HOMES with NO 10mA RCD
The thing about 10mA WH RCD/RCBO it will not work on shared neutral (10mA will always trip unless wholly dedicated L and N).
Just like company claim should only be for your own usage, you should not take receipts from next door diff company workers to claim into your claim submission, will trip finance_RCD laugh.gif

I face this problem before here, (my wiring was very messy as this is used apartment, previous owner do a lot of funny things, I even suspect the WH is also connected to ex-13A point or looped somewhere in the neutral)
Adding SPD and splitting shared MCB (2-3 wire into one MCB puke.gif) required more physical spacing.
End up expanded whole DB box to 36way also not enough (previously was falling apart elcheapo plastic box)
Then realised needed more than that so spill over to second DB box. 3 phase big modules really take up a lot of ways.

Solution was to run direct LNE cable from DB box to WH (so its always dedicated neutral), perfect.

CONSIDERATION WHEN REPLACING EXISTING (QUESTIONABLE CHINA MADE) 10mA RCD in NEWER HOMES
No issue just plug and play as WH Live and WH Neutral should already be on dedicated L and N.
Also easier since wires are identified already, just need to see which is load side and which is line side.
And for this (my own place) I went with big DB box (45 way) straight away to fit all the expansion upgrades like Type2 SPD and have enough room for everything (RCDs, MCBs, main switch, SPD)
*
Thanks for the tips!

I will ask my electrician to take a look 1st, i wish the "bao-kah-liao" solution works for my house...just changing the main RCD to 30mA smile.gif

It is time to improve our house...look look see see...where to improve, during MCO period...haha.

Many thanks again!

This post has been edited by clickNsnap: Jan 16 2021, 10:49 PM
SUSceo684
post Jan 16 2021, 11:00 PM

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QUOTE(clickNsnap @ Jan 16 2021, 10:47 PM)
Thanks for the tips!

I will ask my electrician to take a look 1st, i wish the "bao-kah-liao" solution works for my house...just changing the main RCD to 30mA smile.gif

It is time to improve our house...look look see see...where to improve, during MCO period...haha.

Many thanks again!
*
Most welcome. Am operating mains RCD at 30mA (0.03A) whole house smile.gif sorry for blur pic.

This post has been edited by ceo684: Jan 16 2021, 11:03 PM


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ckdenion
post Jan 16 2021, 11:03 PM

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QUOTE(MrGuGuZai @ Jan 12 2021, 07:43 PM)
» Click to show Spoiler - click again to hide... «
when the flickering room light is off, is there still buzzing sound from the MCB?
senscents
post Sep 20 2022, 06:39 PM

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QUOTE(ceo684 @ Jan 16 2021, 11:00 PM)
Most welcome. Am operating mains RCD at 30mA (0.03A) whole house smile.gif sorry for blur pic.
*
"HI is usually used to described advanced anti-nuisance trip (protect against switching transients and harmonics).
Those with anti nuisance trip (protect against switching transients) for residential use will suffice."

Thinking to update the RCD, currently on 63/0.1(100mA.)

How do we know if the RCD 30mA are equip with the anti-nuisance trip?
Are there any regulation/mandatory on this RCD to be 30mA?
Afraid after installing the RCD 30nA will cause nuisance tripping 🤔

Thanks for your input.

SUSceo684
post Sep 22 2022, 10:41 PM

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QUOTE(senscents @ Sep 20 2022, 06:39 PM)
"HI is usually used to described advanced anti-nuisance trip (protect against switching transients and harmonics).
Those with anti nuisance trip (protect against switching transients) for residential use will suffice."

Thinking to update the RCD, currently on 63/0.1(100mA.)

a. How do we know if the RCD 30mA are equip with the anti-nuisance trip?
b. Are there any regulation/mandatory on this RCD to be 30mA?
c. Afraid after installing the RCD 30nA will cause nuisance tripping 🤔

Thanks for your input.
*
a. Current models got datasheet, basically either ABB/Hager current model [not listed as discontinued] will be fine.

b.Yes, Electricity Regulations 1994, MS 1979:2007 and MS1979:2015 for protection of 13A sockets, and since this is the tightest regulation, it only makes sense to have a 30mA fitted for whole hse. Complete protection.

Would you drive at high speed without a seatbelt on?

c. To add on, not just mains 30mA [whole house] but you should get a 10mA RCD per each water heater fitted too.
I'll be more afraid of what happens in page 30 of
https://www.st.gov.my/en/contents/publicati...r%20Systems.pdf
rather than nuisance trip.

FWIW everywhere in AU, SG all use 30mA. I also use 30mA. Life protection more important. Good [top-tier] modern RCD hardly nuisance trip.

This post has been edited by ceo684: Sep 22 2022, 10:44 PM
senscents
post Sep 23 2022, 08:38 PM

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QUOTE(ceo684 @ Sep 22 2022, 10:41 PM)
a. Current models got datasheet, basically either ABB/Hager current model [not listed as discontinued] will be fine.

b.Yes, Electricity Regulations 1994, MS 1979:2007 and MS1979:2015 for protection of 13A sockets, and since this is the tightest regulation, it only makes sense to have a 30mA fitted for whole hse. Complete protection.

Would you drive at high speed without a seatbelt on?

c. To add on, not just mains 30mA [whole house] but you should get a 10mA RCD per each water heater fitted too.
I'll be more afraid of what happens in page 30 of
https://www.st.gov.my/en/contents/publicati...r%20Systems.pdf
rather than nuisance trip.

FWIW everywhere in AU, SG all use 30mA. I also use 30mA. Life protection more important. Good [top-tier] modern RCD hardly nuisance trip.
*
Thanks fir the advise 👍
With the regulations for 30mA RCD, I wonder how can most developers get away with it?
Is it just a guideline or compulsory?

Will definitely change to proctect ourselves, since it's just a one time investment on our life.

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post Sep 23 2022, 09:24 PM

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QUOTE(senscents @ Sep 23 2022, 08:38 PM)
Thanks fir the advise 👍
With the regulations for 30mA RCD, I wonder how can most developers get away with it?
Is it just a guideline or compulsory?

Will definitely change to proctect ourselves, since it's just a one time investment on our life.
*
See attachment pg 21
QUOTE
Requirements For the Use of Residual Current Circuit Breakers
(Sensitivity) Based on Regulation 36, Electricity Regulations 1994


Those who know will spec out personal homes to be as tight tolerance as possible, despite high cost [sensitive RCDs cost more], for lives of loved ones are priceless - can't sleep at night if we did a half-assed con job;
those who cincai undercut job of coz spec as loose/cheap as possible to avoid rework calls [since less sensitive RCDs are cheap and trip way lesser]

This post has been edited by ceo684: Sep 23 2022, 09:24 PM


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Attached File  ST_Guidelines_For_Electrical_Wiring.pdf ( 427.2k ) Number of downloads: 24
senscents
post Sep 24 2022, 01:29 PM

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QUOTE(ceo684 @ Sep 23 2022, 09:24 PM)
See attachment pg 21
Those who know will spec out personal homes to be as tight tolerance as possible, despite high cost [sensitive RCDs cost more], for lives of loved ones are priceless - can't sleep at night if we did a half-assed con job;
those who cincai undercut job of coz spec as loose/cheap as possible to avoid rework calls [since less sensitive RCDs are cheap and trip way lesser]
*
Is this brand Reliable?
Just install 0.01mA for WH and 0.03mA for wall socket.

Wondering can I use the 25A for water heater ?
Previously was just 16A as the wire are 2.5mm.


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stormer.lyn
post Sep 24 2022, 01:39 PM

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QUOTE(senscents @ Sep 24 2022, 01:29 PM)
Is this brand Reliable?
Just install 0.01mA for WH and 0.03mA for wall socket.

Wondering can I use the 25A for water heater ?
Previously was just 16A as the wire are 2.5mm.
*
An RCCB does not trip on overcurrent. You should be running
Incoming power -> 16 A MCB -> This 25 A, 10 mA RCCB -> Water heater,
so that the MCB trips if more than 16 A flows, and the RCCB trips if there is a leakage approaching 10 mA.

Only an RCBO is like a combination of MCB + RCCB, and will trip if overcurrent or leakage current.

Can't comment on the brand, sorry.

This post has been edited by stormer.lyn: Sep 24 2022, 01:44 PM
SUSceo684
post Sep 24 2022, 02:27 PM

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QUOTE(senscents @ Sep 24 2022, 01:29 PM)
Is this brand Reliable?
Just install 0.01mA for WH and 0.03mA for wall socket.

Wondering can I use the 25A for water heater ?
Previously was just 16A as the wire are 2.5mm.
*
Can't find anything related to the brand hence "no comment". The trademark is super generic nothing shows up on a bing/google search for "safety SRA2 RCCB" confused.gif

Follow stormer.lyn post above is correct.
Personally, if own house I'd spec in only ABB/Hager because "you get what you pay for" also applies to components - you get VI type RCD; anything cheaper tend to be VD type RCD.
senscents
post Sep 24 2022, 02:54 PM

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QUOTE(stormer.lyn @ Sep 24 2022, 01:39 PM)
An RCCB does not trip on overcurrent. You should be running
Incoming power -> 16 A MCB -> This 25 A, 10 mA RCCB -> Water heater,
so that the MCB trips if more than 16 A flows, and the RCCB trips if there is a leakage approaching 10 mA.

Only an RCBO is like a combination of MCB + RCCB, and will trip if overcurrent or leakage current.

Can't comment on the brand, sorry.
*
Appreciate it.
So should I change to RCBO, according to the electrician that our place does not provide a water heater point only normal power point and our electric point share with an a/c also.

QUOTE(ceo684 @ Sep 24 2022, 02:27 PM)
Can't find anything related to the brand hence "no comment". The trademark is super generic nothing shows up on a bing/google search for "safety SRA2 RCCB"  :confused:

Follow stormer.lyn post above is correct.
Personally, if own house I'd spec in only ABB/Hager because "you get what you pay for" also applies to components - you get VI type RCD; anything cheaper tend to be VD type RCD.
*
Most probably will ask to change to a better brand.
Any brand with 16A RCCD or RCBO with 0.01mA for WH and 63A/0.03mA.
Can provide model no. for the VI type RCCD. Appreciate
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post Sep 24 2022, 03:35 PM

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QUOTE(senscents @ Sep 24 2022, 02:54 PM)
Appreciate it.
So should I change to RCBO, according to the electrician that our place does not provide a water heater point only normal power point and our electric point share with an a/c also.
Most probably will ask to change to a better brand.
Any brand with 16A RCCD or RCBO with 0.01mA for WH and 63A/0.03mA.
Can provide model no. for the VI type RCCD. Appreciate
*
So should I change to RCBO
--mostly boils down to space question only "DB box can fit the 10mA RCD [2module width] or not; since can fit should be no problem
--RCBO = RCD+MCB [like washer/dryer two in one - vs a washer+a standalone dryer]

Any brand with 16A RCCD or RCBO with 0.01mA for WH and 63A/0.03mA.
--ABB/Hager thumbup.gif thumbup.gif

Can provide model no. for the VI type RCCD. Appreciate

based on ur pics ur on single phase.

mains 63A/0.03A [30mA]
-- ABB RCCB/ELCB FH202 AC-63/0.03 (30mA) | 2 POLE (2P)
-- Hager CD263B = 63A 2P 30mA; or CDA263U

WH 10mA RCD [need to pair with 16A MCB]
-- ABB RCCB/ELCB F202 AC-25/0.01 (10mA) IEC | 2 POLE (2P)
-- HAGER CC225B 2 Pole ELCB / RCCB 25A 10mA
senscents
post Sep 24 2022, 04:38 PM

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QUOTE(ceo684 @ Sep 24 2022, 03:35 PM)
So should I change to RCBO
--mostly boils down to space question only "DB box can fit the 10mA RCD [2module width] or not; since can fit should be no problem
--RCBO = RCD+MCB [like washer/dryer two in one - vs a washer+a standalone dryer]

Any brand with 16A RCCD or RCBO with 0.01mA for WH and 63A/0.03mA.
--ABB/Hager  thumbup.gif  thumbup.gif

Can provide model no. for the VI type RCCD. Appreciate

based on ur pics ur on single phase.

mains 63A/0.03A [30mA]
-- ABB RCCB/ELCB FH202 AC-63/0.03 (30mA) | 2 POLE (2P)
-- Hager CD263B = 63A 2P 30mA; or CDA263U

WH 10mA RCD [need to pair with 16A MCB]
-- ABB RCCB/ELCB F202 AC-25/0.01 (10mA) IEC | 2 POLE (2P)
-- HAGER CC225B 2 Pole ELCB / RCCB 25A 10mA
*
Excellent. Hope the electrician willing to change a better/reputable brand of RCCD.

senscents
post Sep 24 2022, 04:50 PM

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Incoming power -> New(Safety) 25 A, 10 mA RCCB -> Water heater, Is this OK?

So should I change to RCBO, according to the electrician that our place does not provide a water heater point only normal power point and our electric point share with an a/c also.
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post Sep 24 2022, 05:27 PM

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QUOTE(senscents @ Sep 24 2022, 04:50 PM)
Incoming power -> New(Safety) 25 A, 10 mA RCCB -> Water heater, Is this OK?

So should I change to RCBO, according to the electrician that our place does not provide a water heater point only normal power point and our electric point share with an a/c also.
*
Incoming power -> New(Safety) 25 A, 10 mA RCCB -> Water heater, Is this OK?

Cannot standalone RCCB.
RCCB must pair with a 16A MCB.
senscents
post Sep 24 2022, 07:21 PM

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QUOTE(ceo684 @ Sep 24 2022, 05:27 PM)
Incoming power -> New(Safety) 25 A, 10 mA RCCB -> Water heater, Is this OK?

Cannot standalone RCCB.
RCCB must pair with a 16A MCB.
*
Opssss. My bad... Should be

A) Incoming power -> RCCB 63A/0.03mA -> 25 A, 10 mA RCCB -> Water heater. or

B) Incoming power -> RCCB 63A/0.03mA -> 25 A, -> MCB 16A, -> 10 mA RCCB -> Water heater.


As per ST page 11 drawing. To comply A or B?

This post has been edited by senscents: Sep 24 2022, 07:58 PM
stormer.lyn
post Sep 24 2022, 08:03 PM

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QUOTE(senscents @ Sep 24 2022, 07:21 PM)
Opssss. My bad... Should be

A) Incoming power -> RCCB 63A/0.03mA -> 25 A, 10 mA RCCB -> Water heater. or

B) Incoming power -> RCCB 63A/0.03mA -> 25 A, -> MCB 16A, -> 10 mA RCCB -> Water heater.
As per ST page 11 drawing. To comply A or B?
*
B) Incoming power -> RCCB 63A/0.03mA -> MCB 16A, -> 25 A, 10 mA RCCB -> Water heater.
Note the correction made
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post Sep 26 2022, 10:25 AM

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QUOTE(senscents @ Sep 24 2022, 04:50 PM)
Incoming power -> New(Safety) 25 A, 10 mA RCCB -> Water heater, Is this OK?

So should I change to RCBO, according to the electrician that our place does not provide a water heater point only normal power point and our electric point share with an a/c also.
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Why do you still want to go for this "safety" brand? Is it not obvious to you that it is cap ayam? If you feel that you and your family's life is not worth so much to get Hager/ABB, then at least get Maxguard which is cheap and known to be "decent".

If on the other hand if your electrician insist on using this brand, then just change to another electrician. Or go and buy yourself and get a better electrician to install.

My comments may seem harsh, but you made the effort to come to a forum to ask questions and people gave you good answers but it is mind-boggling that you still choose to be ignorant.
senscents
post Sep 29 2022, 05:05 PM

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QUOTE(senscents @ Sep 24 2022, 04:38 PM)
Excellent. Hope the electrician willing to change a better/reputable  brand of RCCD.
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QUOTE(gobiomani @ Sep 26 2022, 10:25 AM)
Why do you still want to go for this "safety" brand? Is it not obvious to you that it is cap ayam? If you feel that you and your family's life is not worth so much to get Hager/ABB, then at least get Maxguard which is cheap and known to be "decent".

If on the other hand if your electrician insist on using this brand, then just change to another electrician. Or go and buy yourself and get a better electrician to install.

My comments may seem harsh, but you made the effort to come to a forum to ask questions and people gave you good answers but it is mind-boggling that you still choose to be ignorant.
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Thanks for your advice 👍
As per advised by forum members, I've requested items mention below

mains 63A/0.03A [30mA]
-- Hager CD263B = 63A 2P 30mA; or CDA263U
Water Heater 10mA RCD [need to pair with 16A MCB]
- HAGER CC216B or CC225B /  2 Pole RCCB 16/25A 10mA

Luckily the electrician willing to change the RCCB .
Now waiting for him to change. Hopes no more hiccup. 🤞
sleyer
post Oct 1 2022, 09:53 AM

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sory. have questions.. what i need from kontraktor to proof they professional elektrician?
SUSceo684
post Oct 1 2022, 01:07 PM

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QUOTE(sleyer @ Oct 1 2022, 09:53 AM)
sory. have questions.. what i need from kontraktor to proof they professional elektrician?
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Post in https://www.facebook.com/groups/864872177054850 if finding for qualified wireman.

Make sure at least PW1 certified (single phase) or PW3 certified (three phase).
https://www.st.gov.my/en/web/general/details/99

This post has been edited by ceo684: Oct 1 2022, 01:08 PM
sleyer
post Oct 1 2022, 02:41 PM

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QUOTE(ceo684 @ Oct 1 2022, 01:07 PM)
Post in https://www.facebook.com/groups/864872177054850 if finding for qualified wireman.

Make sure at least PW1 certified (single phase) or PW3 certified (three phase).
https://www.st.gov.my/en/web/general/details/99
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how to know our house single phase or 3phase??

for new house can i request drawing technical from developer?? because few additional cable i wan to kontraktor hack wall
SUSceo684
post Oct 1 2022, 03:05 PM

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QUOTE(sleyer @ Oct 1 2022, 02:41 PM)
how to know our house single phase or 3phase??

for new house can i request drawing technical from developer?? because few additional cable i wan to kontraktor hack wall
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When u submit TNB deposit u can ask ur developer, or just post a clear pic of DB box.
mini orchard
post Oct 1 2022, 03:50 PM

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QUOTE(sleyer @ Oct 1 2022, 02:41 PM)
how to know our house single phase or 3phase??

for new house can i request drawing technical from developer?? because few additional cable i wan to kontraktor hack wall
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Most new property esp landed are normally 3 phase ready now. If you want 3 phase, you make an application to tnb, otherwise it will be single phase.

My current place about 13 years is 3 phase ready.
senscents
post Oct 3 2022, 12:09 PM

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Ohhhh

Seems my electrician can not source the HAGER CC216B or CC225B / 2 Pole RCCB 16/25A 10mA.

Anyone know where to purchase it. Thanks
7EN
post Oct 4 2022, 11:16 PM

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QUOTE(senscents @ Oct 3 2022, 12:09 PM)
Ohhhh 

Seems my electrician can not source the HAGER CC216B or CC225B /  2 Pole RCCB 16/25A 10mA.

Anyone know where to purchase it. Thanks
*
not all electrical shops carries them cause hager rccb10ma not cheap.
where are you staying?
SUSceo684
post Oct 5 2022, 12:05 AM

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QUOTE(senscents @ Oct 3 2022, 12:09 PM)
Ohhhh 

Seems my electrician can not source the HAGER CC216B or CC225B /  2 Pole RCCB 16/25A 10mA.

Anyone know where to purchase it. Thanks
*
Shopee got many electrical stores selling online (CPE, KJE, Edaran)

My god, really have to spoonfeed ur electrician.
senscents
post Oct 5 2022, 01:09 PM

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QUOTE(7EN @ Oct 4 2022, 11:16 PM)
not all electrical shops carries them cause hager rccb10ma not cheap.
where are you staying?
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Yeah.. That's the reason mention by the electrician. Out of stock
I'm near KL area.

Any prefer physical shop around KL that sell Hager?

QUOTE(ceo684 @ Oct 5 2022, 12:05 AM)
Shopee got many electrical stores selling online (CPE, KJE, Edaran)

My god, really have to spoonfeed ur electrician.
*
Yes, quite a hassle. When i requested for a better quality/brand RCCB with 30mA and 10mA. He seems to be aware.
He brought up Hager brand and says that's it just slightly more expensive than other but reliable.

Then he bring the Safety(brand) to install. 👀
Luckily he's willing to change. Later inform me that one of the RCCB are out of stock and don't know when the stock will arrive.
Headaches 😩

Any prefer physical shop around KL?
davidlow7
post Oct 5 2022, 10:30 PM

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QUOTE(senscents @ Oct 5 2022, 01:09 PM)
Yeah..  That's the reason mention by the electrician. Out of stock
I'm near KL area.

Any prefer physical shop around KL that sell Hager?
Yes, quite a hassle. When i requested for a better quality/brand RCCB with 30mA and 10mA. He seems to be aware.
He brought up Hager brand and says that's it just slightly more expensive than other but reliable.

Then he bring the Safety(brand) to install. 👀
Luckily he's willing to change. Later inform me that one of the RCCB are out of stock and don't know when the stock will arrive.
Headaches 😩

Any prefer physical shop around KL?
*
There are a few Electrical shops in Puchong Jaya (same row as Restaurant Hee Lai Ton) selling Hager ABB.... you can try...

I used to buy there for my Hager 10mA RCCB but then since I know how to source online now (as they are usually cheaper) I stopped going there.

 

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