I plan to change all to Hager , so i follow back all same 63a for the RCCB and 2 Pole MCB for incoming ya .

Sent , but no reply from them since ever haha


Yes i bought from Authorised Reseller / Distributor shop (Pentapower(M) Sdn Bhd (Puchong) & (CPE Electrical Supplier via Shopee). But they say use 4.5k is enough . Or should i change all to 6k as developer provide?

Ya i redo the reading correct already , 1 WH running around 14A .... Incoming is 16mm from meter but thn 10mm to both RCCB (100mA & 30mA)

For my WH , Developer no give RCCB / RCBO i added myself for safety .

Forget the 100mA RCD (buang), rerun with 16mm inside the DB. That 10mm is only good for ard 40A and can create a hotspot which is unprotected because it is supposed to be 16mm throughout.

means only use 1nos 30mA whole whole house?

The empty space is 2 nos RCCB 0.01 .. not yet install when snap this



This post has been edited by 13aby: Aug 12 2024, 09:08 PM

Yes. According to MS1979 COP it is allowed. And safer too for changing lights.

My neutral bar is separated by two sides , can i connect both side by tapping a wire? or need to replace a longer bar

Common neutral, use a 16mm Mega Kabel pigtail.

U mean connect with a 16mm cable like photo ? 10mm boleh? Existing Neutral developer using 10mm for both side



This post has been edited by 13aby: Aug 13 2024, 10:06 AM

Beli lah one meter of 16mm. Less than 10 bucks per meter only. 10mm not good enough. https://s.lazada.com.my/s.PTisA

16mm i got spare , so i just tap the wire to connect the both bar ya

i dono, but you using 3 phase or single phase?

satu phase

Yes, do a smooth horseshoe shape

just notice i dont have cutter size to cut 16mm haha , any recommendations for the cutter?

MTC-45 or 47 cutters. (the biggest one)

This post has been edited by ceo684: Aug 15 2024, 09:28 AM

if you plan to use your spare 100mA RCCB, then you cant connect both neutral bars.

100mA removed and all now using 30mA RCCB

The MCBs should ideally use the same brand so they're the same height.


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ya will change all to hager , previously i test bought two mcb from 2 different seller . one of it when power off V test 7.xx 😢😢 suspect is fake .... the other one test V is 2.xx perfect ....

Developers have to comply to wiring regulation by Suruhanjaya Tenaga. 10 mA for water heater and wet area. 30 mA for sockets. 100mA for lighting and AC.

in the UK they have moved on to RCBO. No more RCCB as it is included in each circuit. So if there is leakage only individual circuit would trip not the whole house. In Malaysia RCBO is available for Water heater (20A, 10mA trip), the rest not widely available yet or price too expensive.