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 Professional Electrician, Looking for professional electrician

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stormer.lyn
post Sep 24 2022, 01:39 PM

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From: Shah Alam, Selangor
QUOTE(senscents @ Sep 24 2022, 01:29 PM)
Is this brand Reliable?
Just install 0.01mA for WH and 0.03mA for wall socket.

Wondering can I use the 25A for water heater ?
Previously was just 16A as the wire are 2.5mm.
*
An RCCB does not trip on overcurrent. You should be running
Incoming power -> 16 A MCB -> This 25 A, 10 mA RCCB -> Water heater,
so that the MCB trips if more than 16 A flows, and the RCCB trips if there is a leakage approaching 10 mA.

Only an RCBO is like a combination of MCB + RCCB, and will trip if overcurrent or leakage current.

Can't comment on the brand, sorry.

This post has been edited by stormer.lyn: Sep 24 2022, 01:44 PM
stormer.lyn
post Sep 24 2022, 08:03 PM

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From: Shah Alam, Selangor
QUOTE(senscents @ Sep 24 2022, 07:21 PM)
Opssss. My bad... Should be

A) Incoming power -> RCCB 63A/0.03mA -> 25 A, 10 mA RCCB -> Water heater. or

B) Incoming power -> RCCB 63A/0.03mA -> 25 A, -> MCB 16A, -> 10 mA RCCB -> Water heater.
As per ST page 11 drawing. To comply A or B?
*
B) Incoming power -> RCCB 63A/0.03mA -> MCB 16A, -> 25 A, 10 mA RCCB -> Water heater.
Note the correction made
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