Published:
8 November 2011
Category:
Q&A
David Osborne asks whether, when testing between phase and neutral on a lighting circuit, the results can be affected by the lighting control gear. It is answered by the ECA (theme - Electrical Testing):
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Question: I've recently tried to test between phase and neutral on a lighting circuit and have discovered a low insulation resistance. I know that it's not the circuit as I disconnected the lights and removed all the bulbs. However, does the lighting control gear mess up the readings?
Answer: Yes it does Dave. The testing should be done with the light fittings disconnected where possible or agreed as a limitation.
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