Wajib ker litar Water Heater pasang RCCB sensitivity 10mA?

Wajib ker litar Water Heater pasang RCCB sensitivity 10mA?
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[@raishafawwaz1157]

Assalamualaikum tuan. Blh buat video mengguakan 2 rccb dalam 1 DB. Asing litar cahaya Dan kuasa.

[@MADILACADEMY]

W’salam tuan. Boleh tuan