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Renovations 3-phase wiring
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weikee
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Jun 2 2015, 03:29 PM
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QUOTE(Iceman74 @ Jun 2 2015, 03:21 PM) Hi guys, Which brand of wire to do re-wiring is good quality and price is reasonable? Gonna get my keys soon. Need to do planing to re-wire the whole house. New house also need to rewire? mostly if you get local brand should be good. Some local brand I know are Fajar Cables, Universal Cables, FEC, Megakable
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weikee
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Jun 2 2015, 04:08 PM
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QUOTE(Iceman74 @ Jun 2 2015, 03:49 PM) 2nd hand house. Don't like the way previous owner done the wiring, just sambung here & there even aircond just sambung normal wall plug. Thanks for the tip. Any idea how much per row roughly? Really out of this for sometime, you got to shop around and ask.
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weikee
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Jun 7 2015, 09:43 PM
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QUOTE(Richard @ Jun 7 2015, 09:21 PM) Refer Joven instant water heater http://www.joven-electric.com/product_deta...d=2&series_id=8 specifications. On highest (hotest) setting it(instant water heater) will draw 20+ amps from your supply. I have confirmed this with a tong tester. Also don't take the best case scenario that they are using new expensive low power high efficiency energy saving electrical appliances after one(1) year usage any 2kw/3kw rice cooker/kettle will draw near 10 Amps from your mains. Malaysia unit usually 3.6kw. I doubt you can get the 5.2kw unit.
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weikee
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Jun 7 2015, 09:46 PM
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Good example is Panasonic, they don't sell anything > 3.6KW
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weikee
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Jun 8 2015, 01:57 PM
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QUOTE(pigletbb @ Jun 8 2015, 12:37 PM) HI, would like to ask how to identify whether it's 3 phase or single phase by looking to the DB box? May I ask the picture show is 3 phase wiring? [attachmentid=4477730] Look like you have two zone only, don't look like 3-phase. Do you separate it by 2 zone? (first floor and ground floor)?
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weikee
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Jun 8 2015, 03:46 PM
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QUOTE(supersound @ Jun 8 2015, 03:35 PM) Have an afternoon wild guess, this photo is a single phase or 3 phase electrical system [attachmentid=4477995] Too blur to identify.
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weikee
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Jun 8 2015, 05:04 PM
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QUOTE(supersound @ Jun 8 2015, 03:47 PM) Just 1 row of MCBs  Usually with 3 Level together is 3-phase
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weikee
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Jun 8 2015, 05:15 PM
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QUOTE(pigletbb @ Jun 8 2015, 05:07 PM) NOpe, only at ground floor. Easiest is look at the Meter, if you have 2 wires from the incoming is single phase, if you have 4 wires is 3 phase. And Meter will also indicate the phase too.
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weikee
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Jan 20 2016, 08:31 AM
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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? House wiring need to be ready, and have distributed load for 3 phase, only than you can benefit of using 3 phase. If just change the meter and incoming is really served no purpose.
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weikee
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May 31 2016, 05:56 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 ? so many 13A points only 24 MCB? How many they loop?
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weikee
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Jun 1 2016, 09:18 AM
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QUOTE(Milo_O @ May 31 2016, 11:01 PM) the 40 points on 13A is just an estimate. However thanks for your respond. I triple confirmed with the electric guy 24 MCB is enough ? He say enough repeatedly. I eventually believed him and it seems I got con now. I have about 30MCB just for 13Amp plug, almost all my wall plug are direct, no looping
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weikee
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Jun 1 2016, 10:55 AM
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QUOTE(Milo_O @ Jun 1 2016, 09:31 AM) thanks weikee, the ideal case will be no looping. That will be my preference as well, let me think if I need to add on more MCB. Have to specify and you going to tell them that you will test every single one. I made my own simple testing tool to test. Also at the same time test the earthing.
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weikee
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Jun 1 2016, 11:27 AM
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QUOTE(Milo_O @ Jun 1 2016, 10:59 AM) Still initial discussion, have not gone into detailed discussion. May I ask how do u test the plug points and also the earth ? Manual way of testing, i made a plug with shorted earth and neutral together. This will trip the RCCB / ELCB, this is to test earth. For Looping, i will trip individual MCB and test which one is off wither with a bulb or test pen. If the > 1 plug have no power meaning is loop together.
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weikee
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Jun 18 2016, 11:11 PM
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QUOTE(Soniaclf @ Jun 18 2016, 10:08 PM) Anyone knows what is the max power usage I can use for single phase? Eg, can I on 1x 2.5hp aircon + 1.5hp aircon at the same time together with heater pump and oven? Some single story / apartment the breaker switch and main fuse are 40amp, some are 63amps. You need to check your main fuse & breaker switch and wiring size. If 40amp, multiple it with 230 i.e. (40x230) that you max watt can use for a shot period of time, for consistent usage is recommend to only use 80-85%.
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weikee
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Jun 21 2016, 11:02 AM
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Also please NOTE, voltage is now 230v, no longer 240v
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weikee
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Dec 18 2016, 11:36 AM
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QUOTE(cyberkoh88 @ Dec 17 2016, 08:40 PM) My house currently got 3 aircon (total 3.5hp), 3 water heater and 1 refrigerator. Plan to add another 1 unit (1hp). Attached my current house meter and db board (single phase electricity). Can my house support concurrent use of 4 airxon on the same times ( total 4.5 hp). The new aircon i plan to install now dont have aircon power point, maybe will loop from the power point socket inside the room (second floor room, db board in first floor, so quite expensive if get the wiring direct from db board). Any sifu can advise here? Concurrent of 4 ac of yours is ok, but you have to aware of the situation if by any time switch on two of the water heater you will risk tripping the main fuse/burned the main fused (if older type of fused). Also make sure all the water heater and ac run independent circuit any sharing will risk burning the wires (worse your house)
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weikee
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Dec 18 2016, 11:38 AM
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Btw, your elcb limited to 40 amps, so is not wise to even switch on 4 ac & 2 water heater.
This post has been edited by weikee: Dec 18 2016, 11:41 AM
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weikee
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Dec 18 2016, 01:26 PM
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QUOTE(cyberkoh88 @ Dec 18 2016, 12:26 PM) Just ask electrician to come over to inspect my house, he recommend me to change this 2 items (attached picture). Quote me RM400 for it,expensive? The outside fuse can buy outside about 10-15 bucks for 63amps. Changing fused allow you to have fuse to take higher load, but doesn't mean your original wiring can support it. Is better to confirm your wiring can support. From meter to house db box. This post has been edited by weikee: Dec 18 2016, 07:23 PM
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weikee
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Dec 19 2016, 01:19 PM
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QUOTE(cyberkoh88 @ Dec 19 2016, 11:28 AM) wah then the electrician charge me very high on this...just change outside meter fuse and some slot (2-3 slot in my db box as shown in my attachment). even told me very complicated and might take half day to change it...isit true? Outside is simple, db box do need some skills.
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weikee
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Dec 19 2016, 01:33 PM
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QUOTE(cyberkoh88 @ Dec 19 2016, 01:25 PM) ic, so you think RM400 should be reasonable price? I won't be able give you actual answer, really depending the work done, material used and his workmanship.
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