SPM Pendawaian Domestik Practice Questions - Sijil Pelajaran Malaysia (SPM) Pendawaian Domestik Domestic Wiring - Subject Code 7104 Exam

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Before carrying out any maintenance or testing work on an existing domestic wiring circuit, what must a wireman do first?

Increase the circuit's protective device rating Switch off and isolate the electricity supply to the circuit Inform the neighbours about the work Replace all sockets in the house

Correct Answer:

Switch off and isolate the electricity supply to the circuit

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