Make sure not to use plug and socket connection for water heater, as this is against Suruhanjaya Tenaga guideline.


You can either:

1. connect the correct size electrical cable (4mm for water heaters with power rating below 5.711kW) from the bathroom switch outside your bathroom directly to the water heater, or

2. if the developer unit had mistakenly pre-installed with a 3-pin socket in the bathroom (which is definitely not compliant according to Suruhanjaya Tenaga), and u find it tedious to cover the junction box back with cement and paint, then alternatively u can replace it with a Water Heater Connector (eg. shown below, Shopee / Lazada). It is not a necessary product for water heater connection, just a quick fix for mistakes made by developers that have pre-installed 3-pin socket in the bathroom.








Also check to make sure the MCB, switch, and electrical cable for the water heater power connection are up to spec (refer to Suruhanjaya Tenaga guideline below). Power connection for water heater has to be a dedicated one, cannot be shared with any other appliances.

This Suruhanjaya Tenaga guideline has been there for many years, and have to be followed by all SIRIM certified water heaters, which means that their instruction manuals will state the same requirements as the Suruhanjaya Tenaga guideline.

Here is Suruhanjaya Tenaga's contact details if u need further clarification.





What's the possible downside for not following the Suruhanjaya Tenaga guideline and the water heater's instruction manual?

1. Safety issue | The risk of electrocution and fire hazard is higher (especially true if your electrical components are wayyy under-spec'ed).

2. Liability / insurance / warranty claims issue | Since you are not following the instruction manual and Suruhanjaya Tenaga guideline, this provides a justification for the insurance companies to void your insurance claims / for the supplier to void your warranty claims, if your water heater is damaged or even (touch wood) caused harm to you (eg. fire / electrocution).