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> water heater, price and quality

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weikee
post Nov 16 2011, 01:44 PM

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4mm2, that can power over 30Amps of equipment.
weikee
post Nov 17 2011, 03:03 AM

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QUOTE(leeyung @ Nov 16 2011, 02:28 PM)
ic, any references for Amp vs thickness wire? I search around, found AWG (American Wire Gauge)  shakehead.gif I roughly calculate, a 2HP aircon 5.4KW

said it is single phase 5400/240 = 22.5A, means I have to go for 4mm at least? 2.5 mm cant?
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2hp don't drain to much current. The number you got is cooling capacity. Not current. 2HP should be less than 2Kw. Please check the current or power input. Is about 10 amp the most.


Added on November 17, 2011, 3:04 am
QUOTE(Eng_Tat @ Nov 16 2011, 03:07 PM)
generally rating for 2.5mm is around 15A and 4mm is around 25A @240volt rite?
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Depend the length, and also if its expose or conceal. Usually conceal will be less current cause less cooling. But that number is about right. Can still stress a bit more if length are not too long and expose.

This post has been edited by weikee: Nov 17 2011, 03:04 AM
weikee
post Nov 17 2011, 09:07 AM

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1HP is 0.735 KW (electrical motor), I'll add 30% for losses. so 2hp = 2x 0.735 + 30%
weikee
post Nov 17 2011, 10:45 AM

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QUOTE(Eng_Tat @ Nov 17 2011, 10:26 AM)
wei kee, do you know the normal pvc pipe can fit hw many 4mm wires?
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Don't know, minimal should be 3. You can check in electrical shop. white pvc have few size.
weikee
post Nov 17 2011, 12:23 PM

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QUOTE(amirsubhi @ Nov 17 2011, 10:51 AM)
i confuse, at first was talking about water heater, then suddenly aircond

lol

anwyay, how about power consumption for water heater,how high it will be
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Depend,

Instant water heater go from 100watt to 3600 watt cause you can adjust the heating element.

Storage water heater 3000 Watt (Joven).

Solar Power also need power, this you need to check the spec.


Added on November 17, 2011, 12:25 pm
QUOTE(leeyung @ Nov 17 2011, 11:28 AM)
Woops, sorry for my aging eyes, but was wondering why the current not tally with the power one  hmm.gif
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Because of losses.

This post has been edited by weikee: Nov 17 2011, 12:25 PM
weikee
post Nov 20 2011, 11:23 PM

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If you set max temperature, his high current it sure generate some heat. If is just warm and with good quality cable you don't have to worry much. If lousy quality cable, longer you use it will turn brittle and copper will oxidized.

Don't use 100%, 80% of setting, and reduce pump speed.
weikee
post Nov 21 2011, 11:01 AM

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QUOTE(Eng_Tat @ Nov 21 2011, 09:35 AM)
Yeah its just warm. the setting of pump is full speed and heat is around 70%-80%. I am also using wire approved by sirim. Any way shud have gone with 4mm wires next time.
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Reduce pump speed, and set to 60%.
weikee
post Nov 22 2011, 01:02 PM

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It all depend of the water temperature and flow. 99& of the market instant water heater use heating element which is very reliable. If water flow too fast you won't get hot water. If water too cold you don't too. Got to play around with water pressure.
weikee
post Sep 9 2013, 05:57 PM

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QUOTE(hontoni1983 @ Sep 9 2013, 05:51 PM)
Purchased Alpha Smart 18i from Perfect Lifestyle fair a week ago, and they have came for installation yesterday,this is the first time in my life that i am installing water heater (all the while,my parents refuse to install heater because worry of electricity leakage),and holy shit,they use a PVC pipe to connect the output of my original rain water shower output to the heater input, and now, I can see the whole PVC pipe naked on the tiles which is about 2 meter long.....

Oh my god,i really can't accept that after spent so much of money to renovate the house,and the ugly part appear in the toilet!!! Really learnt my lesson, anybody here got idea how to overcome this?? except drill hole and put the pipe inside, and redo the tiles??
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Instant water heater will have this problem, any type you use sure will see the pipe. You can use stainless steel pipe that will make it nicer. Have to pay higher price.
weikee
post Sep 9 2013, 06:24 PM

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QUOTE(weikee @ Sep 9 2013, 05:57 PM)
Instant water heater will have this problem, any type you use sure will see the pipe. You can use stainless steel pipe that will make it nicer. Have to pay higher price.
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Even flexible hose will not look nice. PVC will look better compare to flexible steel hose.
weikee
post Sep 9 2013, 06:26 PM

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QUOTE(sovietmah @ Sep 9 2013, 05:58 PM)
If i am him i will hack the tiles. but how come it will be 2 meters long? i couldn't understand, by right at least you should decided the position of ur water heater, more or less 2 feet diff.
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Maybe is few feet if tap from shower head. 2meter bit too much.
weikee
post Sep 9 2013, 08:25 PM

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QUOTE(idoblu @ Sep 9 2013, 07:46 PM)
Why houses/condo nowadays don't come with copper piping for storage heaters?
My 20 years old medium cost condo also included
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Cheaper cost ma
weikee
post Sep 9 2013, 08:34 PM

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QUOTE(idoblu @ Sep 9 2013, 08:33 PM)
its also a possibility that owners do not know about these things. just pasang only without realizing that their bathrooms are equipped for storage heaters
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Where got so stupid. Very obvious
weikee
post Sep 9 2013, 08:38 PM

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QUOTE(petlu28 @ Sep 9 2013, 08:31 PM)
After boil off power then still can enjoy hot water?
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Yes still hot water inside. Depend how long it was heated.

After my wife bath, she will usually off it. And my 5-10 mins bath is still sufficient.
weikee
post Sep 9 2013, 08:59 PM

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QUOTE(idoblu @ Sep 9 2013, 08:38 PM)
if you read some of the questions people are asking just on this page alone, you can see that there must be a possibility
that they wont know if their homes are equipped for storage heaters or not. copper pipe is concealed. only thing showing is a mixer knob or two depending on design. you'd be surprised how many wont know
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Haha sometime I wonder...

Well When buy new house the developer will put it in the brochure ma. If old house will see got switch but no wires on the bath room + mixer.
weikee
post Sep 9 2013, 09:02 PM

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QUOTE(petlu28 @ Sep 9 2013, 08:43 PM)
Think this way more secure prevent electrocute.
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Higher chances to die in car accident than water heater electrocute. Don't drive car safer.


weikee
post Sep 10 2013, 07:12 AM

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Got so much worry use gas lo. Even solar you risk lightning.
weikee
post Sep 10 2013, 08:53 AM

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QUOTE(idoblu @ Sep 10 2013, 07:47 AM)
Storage heaters and mini heat pump the safest.  biggrin.gif
Gas can leak, cause fire and explosion  laugh.gif
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Eat also can choke. No need to eat.

In life we do all the precautions we can, if really want to go is time to go. What we can do is make sure the thing we install are safe and product we get are good brand.

Heard from radio today the water heater that cause of death of the couple is instant water heater.
weikee
post Sep 10 2013, 09:15 AM

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QUOTE(idoblu @ Sep 10 2013, 09:03 AM)
I have no doubts its one of those instant kind.
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The sad news is, they left behind a 6 months old baby. Pray for the baby finding a good home.
weikee
post Sep 10 2013, 12:51 PM

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QUOTE(hontoni1983 @ Sep 10 2013, 12:14 PM)
Because the pipe is from the top of ceiling until the heater
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Ahh, can it be you already have rain shower with storage heater?

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