CITS Electrician (Theory) Practice Questions - Craft Instructor Training Scheme (CITS) - Electrician Trade Technology & Training Methodology Theory Examinations Exam

The purpose of a residual current device (RCCB/ELCB) in a workshop DB is to:

Measure power factor only Detect earth-leakage current and trip to reduce shock risk Increase supply voltage during motor starting Convert AC to DC for tools

Correct Answer:

Detect earth-leakage current and trip to reduce shock risk

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