I used to be an electrician many many many years ago, and seem to have forgotten some fundamentals, any help would be greatly appreciated.
I am simply replacing a double socket front, and extending the cable a little to move a few inches. Downstairs.
I have switched the Circuit Breaker to the downstairs sockets to open/off
When I snipped the cable behind the old socket, my snips obviously went through Live Neutral & Earth together, and it caued the MCB to trip.
If the circuit has been isolated by the "downstairs Sockets" Circuit Breaker, how is this possible please?
I am simply replacing a double socket front, and extending the cable a little to move a few inches. Downstairs.
I have switched the Circuit Breaker to the downstairs sockets to open/off
When I snipped the cable behind the old socket, my snips obviously went through Live Neutral & Earth together, and it caued the MCB to trip.
If the circuit has been isolated by the "downstairs Sockets" Circuit Breaker, how is this possible please?