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Electrical Question from Paul about Electrical Surge Problem


By Dave Rongey - Summary:

Question: why does my main switch red not trip when i send a fault current through it.

Electrical Question from Paul about Electrical Surge Problem

Received from Paul a Electrician in Birmingham England

Question: why does my main switch red not trip when I send a fault current through it. It is 18 yrs old, and we recently a power surge, it was fine before that. Many thanks.

Additional Comments: very useful

Dave’s Reply:
Thanks for your electrical question.
Hi Paul – Many power surge devices are designed to absorb the surge to the point of causing the surge device to fail in order to prevent the surge from effecting the circuit that it is protecting. This may very well be the case with your main switch. I would recommend having a qualified electrician test the main switch and replace it if it is faulty.

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