MTTC Electrical Trade Test Practice Questions - MTTC Trade Test - Electrical Installation And Maintenance (NCQF Level III, Botswana) Exam

What is the very first step an electrician must take before carrying out maintenance on a fixed electrical circuit?

Connect an ammeter across the terminals Safely isolate the circuit and prove it is dead Replace the circuit breaker with a higher rating Attach an earth clamp to the live busbar

Correct Answer:

Safely isolate the circuit and prove it is dead

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