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Renovations 3-phase wiring

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sonerin
post Sep 15 2010, 03:06 PM

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Unless you turn on everything at the same time then you might need to change. Other than that it should be fine.
sonerin
post Sep 15 2010, 05:22 PM

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QUOTE(DigitalTech @ Sep 15 2010, 03:23 PM)
you mean all at once?

How about I turn it on one at a time and at the end all the aircons is switched on?

Will there be any problem?
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What I mean is all the airconds are on even you turn on one at a time. At the end when all the airconds are on that might be a problem.
Then again it depend on the usage of the electric current. As long as the amount of power is within the range of 63A as per standard 1 phase
electricity.
sonerin
post Oct 10 2015, 12:03 PM

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QUOTE(MuhdHusaini @ Oct 9 2015, 08:46 PM)
Hi All
I would like to know let say i have a house with two DB gfloor and 1st floor l.  Let say if i want to change to 3 phase do i nees to change both DB to 3 phase or just thr gfloor?
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Just change the main db box
sonerin
post Dec 24 2015, 05:06 PM

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QUOTE(jojozep @ Dec 24 2015, 03:48 PM)
Noticed smoke coming from my fuse next to meter. Called Tnb, they changed a new fuse but tell me to get wireman to change cable from 16 amp to 25 amp. Anyone can recommend an experienced wireman in Subang/puchong area? I have 4 aircon 2(1.5) aircon and 3 (1hp) aircon, do I need 3 phase?
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From my count there is total of 5 airconds. Is not necessary for 3 phase unless all of the 5 airconds on at the same time
sonerin
post Dec 24 2015, 05:53 PM

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I don't know how to verify but application for 3 phase is about RM5k including the new DB box. Maybe need another 1k or so for the main cable to be install. This is all very rough estimate it could be more
sonerin
post Jan 19 2016, 07:57 PM

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QUOTE(veron4best @ Jan 19 2016, 02:27 PM)
Hi,

I receive TNB letter for electricity supply application by my developer, the letter mentioned is 1 phase wiring. Can I request 3 phase wiring with my developer?

Or I can only do any changes after VP?
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You can apply to TNB for 3 phase after you get the house key. However your house wiring will need to be change for 3 phase for the entire house
sonerin
post Apr 26 2016, 09:58 AM

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QUOTE(giggs_509 @ Apr 26 2016, 09:47 AM)
Not sure about the new DB thing, that's why i ask. Can elaborate more about re run the wiring?
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You need to do new wiring for your house
sonerin
post Apr 26 2016, 05:40 PM

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QUOTE(giggs_509 @ Apr 26 2016, 05:26 PM)
Do new wiring means change wiring is it? Or just involve the wiring at DB?
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Need to wire whole house not just db
sonerin
post May 31 2016, 08:52 PM

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QUOTE(Milo_O @ May 31 2016, 05:18 PM)
My mother house in Kepong which is 30 years ++ will need to do whole house re-wiring.
Total electrical points as below

1. 3 air conditioner 1HP
2. 5 ceiling fan
3. 1 water heater
4. 1 rice cooker
5. 1 fridge
6. Light points (let's say 30)
7. 13A points (let's say 40)

Scope includes
1. Installation of new DB wit 24 MCB
2. Whole house re-wiring
3. Autogate wiring

The quote is RM13k ? It is reasonable or he is trying to con me ?
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The price is expensive and only 24MCB seem to be not right.
sonerin
post Dec 10 2016, 10:14 PM

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QUOTE(Mooneyes @ Dec 10 2016, 12:13 AM)
Can single phase support 6 ac and 2 fridge?
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My house was on single phase with 5 ac and 2 fridge. 5 years no issue
sonerin
post Jul 28 2017, 10:00 PM

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Usually main fuse is 63A
sonerin
post Sep 27 2017, 06:46 AM

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QUOTE(szebing7 @ Sep 27 2017, 01:41 AM)
How much does it cost now to install 3 phase TNB connection supply and also a new DB box? Thanks
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I did my 2 years back about RM3.5k
sonerin
post Sep 27 2017, 03:01 PM

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QUOTE(enriquelee @ Sep 27 2017, 02:14 PM)
3.5k including all the new cable and DB box?  shocking.gif
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is just the DB box and the charges for TNB + misc. Cabling is not included
sonerin
post Sep 27 2017, 05:46 PM

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QUOTE(weikee @ Sep 27 2017, 05:28 PM)
3 Phases is not just change DB Box, and Meter.

Need to readjust the power distribution, and correctly distribute each phase.
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Depend on what you want to do. For me I use 2 phase for the house and 1 phase dedicated to my entertainment room
sonerin
post Sep 27 2017, 06:14 PM

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QUOTE(weikee @ Sep 27 2017, 06:11 PM)
If the usage are very imbalance, TNB will come knocking your door.
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I pay what I use. If they come, I am happy for them to check
sonerin
post Sep 27 2017, 06:23 PM

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QUOTE(weikee @ Sep 27 2017, 06:15 PM)
Too much in-balance will cause voltage and phase issues. is not about pay or not.
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Please share some knowledge
sonerin
post Sep 27 2017, 07:53 PM

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QUOTE(weikee @ Sep 27 2017, 06:41 PM)
Someone explain it good enough at the last post

https://forum.lowyat.net/topic/4410943
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For that thread is talking about missing neutral from TNB sub station. Having balance spread for 3 phase within 1 house is a totally different thing.
sonerin
post Sep 27 2017, 09:01 PM

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QUOTE(weikee @ Sep 27 2017, 08:42 PM)
I dont dealt  much with 3 phases imbalance so my knowledge are limited on this issue. What i know is when there are too dramatic imbalance there will be problem with the substation (in some gen set it can burned due to imbalance), and other house appliances will behave funny. This usually happens if the load are very drastic different. Maybe it wont happened to your case.

Tnb did came to my mom house to switch house from one phase to another, when i ask the technician told me they need to balance it. That was when we just move in sometime ago.
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Typically of course from sub station to house is good to be balance. Within inside the house, is up to us how to use. Separate the phase also give you cleaner power
sonerin
post Mar 11 2022, 08:30 PM

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QUOTE(StupidGuyPlayComp @ Mar 9 2022, 11:06 AM)
Hi Sifu here, i using 3phase meter, but always jump switch during lightning.

what should i do to resolve this? thanks
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Add in lightning surge protector
sonerin
post Apr 6 2024, 10:45 PM

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QUOTE(Oltromen Ripot @ Mar 28 2024, 08:10 PM)
guys, i'm still confused about 1phase to 3phase.

landed house. supply is pulled serial stretching 4 houses. pre-existing 1phase with 60A fuse outside.

right now from reading TNB website, it sounded like i can magically change only meter and nothing else. please enlighten me.

--

(1) do i need to change meter etc outside? yes

(2) do i need to change fusebox inside?

(3) do i need to change lightning breaker?

(4) do i need to change breakers inside?

(5) is there new additional -whatever- at board inside?

(6) do i need to change wiring to wall switches, 3-pin sockets, and fixed appliances (including air conditioners, lightings, fans, heaters)?

--

just additional info; 8hp spread over 6 inverter airconditioners.
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Simple answer is need to change everything except the wires that already inside the wall

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