Electrical Engineering · Electrical Safety and Installation
To ascertain the area or circuits controlled by a sub-main switch, switch it off and check which of the following?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Energy meter reading
- 2Lights, fans, and power sockets✓
- 3Main incoming service cable
- 4Water supply taps
Correct answer
Lights, fans, and power sockets
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