haha.. you seem like expert..

if only 8 nos. 13A socket total maybe 15 lights in the whole house..

you can do?

Bit of advice if doing new living room ask your wireman pull extra conduits from the main TV, central stereo to ceiling/wall satellite speakers..

Place the unifi main equipment in a store room or under the staircase with a cat5e cable to the wireless AP run cat5e from network switch to the main tv/central stereo console and anywhere else you might need it with a 13A socket nearby..

Place a 13A socket high level outside in case you need it..

This is only one persons unqualified opinion based on cost..

Please base your decision on our electrical code of installation as there are many electrical accidents due to substandard cable sizing and wiring installation.. Electrical system is invisible and travels via electrical conductor and can kill you and burn down your home..

rm45/100m coil for 1.5mm2 (allowed current carrying capacity 14.5A), rm55/100m coil for 2.5mm2 (allowed current carrying capacity 19.5A), rm110 for 4mm2 and so on..

3 runs of cables to complete a circuit i.e. Live(L), Neutral(N) and protective earth(E) with a mcb for thermal overload to protect the circuit.

You can link as many light points to one circuit within its allowable rating for 1.5mm2 or as many as 2 nos 13A sockets for 2.5mm2.

If you are doing residential wiring you must run 4mm2 pvc cable for water heater or air conditioner with a double pole switch. In addition there should be an individual RCD for water heaters..

The reason you pay more is for a competent wireman to supply and install according to our Malaysian guidelines for electrical wiring in buildings. Its for your safety and the safety of your loved ones.

and yes.. you can employ any bangla or indon worker to pull your wiring.. its just not as safe..

This post has been edited by Richard: Feb 22 2016, 10:37 PM

Ask your wireman to follow the guideline..

GUIDELINES FOR ELECTRICAL WIRING IN RESIDENTIAL BUILDINGS.. from Suruhanjaya Tenaga Malaysia..

Just goggle it unless you have specific question i am also competent wireman since 2002..

Only water heater require individual RCD.. It trips automatically if there is a current leak.. Remember recent news those Japanese died in the bathroom? Thats' why..

2HP aircon starting and running amps.. 2.5mm2 is adequate but it must be single circuit to one aircon.. no sharing..
Strictly if follow code Suruhanjaya Tenaga (ST) requires 4mm2 but no enforcement.. so 2.5mm2 is ok..

that copper can actually carry 22-36Amps just careful a lot of China fake copper cables in the market.. easy to spot the weight difference if you are looking for it.. get a competent wireman/contractor..

get 3 quotations from others if your wireman looks more like a car/insurance salesman,,

This post has been edited by Richard: Feb 23 2016, 01:21 AM

It's more the cost of mobilization cost, the cost from getting the manpower, materials and tools from the shop to your house and back.. there's also the parking fee, waiting fee and idling time who pays for all of this??

Someone has to pay for it.. if it is a small job than maybe they won't take it because the unit price becomes too expensive and some owners calculate until the 5 cents so it is a loss to take this type jobs.. better don't do..

I pity the wireman who has to quote to these homeowners..

so calculative until can accept undersized wires for water heaters. Water heaters are 4mm2 per ST with an 10mA trip RCBO installed

An electric circuit without earth continuity? All for the sake of saving a few ringgit and bypassing regulations meant to save lives and property..

Really hope you people know what is at stake in your discussions.

The guidelines for domestic wirings in residential buildings for standard 3kW water heaters are 20A mcb with a 10mA trip RCD wired to a 20A DP neon switch terminated to a ceiling rose or directly connected to the water heater wired 4mm2 in conduit from DB. You can replace the water heater mcb/RCD with a similar rated RCBO to save space in your DB.

Be prepared to pay around rm500 on average for the above. A wireman who qoutes less might be cutting corners or using existing wiring. Get the wireman to stamp in his PW number on his invoice to make him responsible for the installation.. to
This is just a general guide based our energy commission (ST) for a standard 3 BR apartment. Ask to witness the insulation test, continuity test of the phase, neutral and earth conductors and the RCD trip test. The RCD trip time must be within 200ms to the nominal trip on the device.

A proper installation must be tested for correctness, safety and the client's peace of mind.

Just my thoughts to share..

This post has been edited by Richard: Apr 2 2018, 08:27 AM

The newer development's usually yes..

It is a mandatory requirement to have the water heater wiring connections to the guidelines of the suruhanjaya tenaga but some installation are not tested by the responsibility developer's consultants thus the owners need to be aware of this.

You need to do it yourself. Thus the need for a competent registered wireman with the correct test equipment.

The main issue was the death's of home owners in apartment with their water heaters installation protection not working..

You only hear from the published reports but actually many more happened but not reported..

The test equipment is an RCD tester.All three wires (live, neutral and earth) are connected to it. The 3LEDs on the tester will lit showing a good live, neutral and earth connection.
. There's a test button on the RCD tester

Press the test button.

The water heater RCD must trip without tripping out the main RCD and the LCD display will show a tripping time in ms(milliseconds) with the leakage to earth current in mA(milliamps). The readings should be less than 200ms and 10mA.

Have your water heater RCD tested by your wireman and have it recorded on a test report with your wireman's PW number and signature.

Sleep a little easier knowing that your water heater electrical connection will disconnect if there is anything wrong with the water heater and not harm/kill anyone.

Any 13A socket in the bathroom should be similarly tested to make sure it complies to the ST guidelines.

Hope this helps.

Yes, however some homes have a 13A socket beside the bathroom washbasin.. usually those higher class landed properties..

I mean if the 13A socket is installed within the bathroom then it has to be protected with a 10mA RCD to comply to ST. It is a mandatory requirement.

You misunderstood.. the water heater is on a 20A double pole neon switch outside the bathroom.. only the wiring terminal from 20A switch to water heater location is present.

I meant some bathrooms has an additional 13A socket beside the washbasin (for hairdryer or shavers, whatever). It is this 13A socket which has to be protected..

Hopefully that's clear..