Hello,
I am a DIYer and in the process of fitting a spur from a socket (and from the ring). Using a voltage and continuity tester I turned off all the MCBs and RCBs plus the main switch in the Consumer Unit.
I opened up and checked a plug socket and the ground with the line/neutral the volt and cont tester buzzed and showed 400V! I also checked the shower on/off switch which was the same - 400V.
They day before I did convert an old immersion switch into a plug socket. It was linked to the boiler and I had to isolate the boiler after there was continuity with the N/L.
Any ideas what happened here? I also tested with the boiler switched on and isolated, with all the CU off and it was the same. The boiler circuit did not show the 400V.
Cheers.
I am a DIYer and in the process of fitting a spur from a socket (and from the ring). Using a voltage and continuity tester I turned off all the MCBs and RCBs plus the main switch in the Consumer Unit.
I opened up and checked a plug socket and the ground with the line/neutral the volt and cont tester buzzed and showed 400V! I also checked the shower on/off switch which was the same - 400V.
They day before I did convert an old immersion switch into a plug socket. It was linked to the boiler and I had to isolate the boiler after there was continuity with the N/L.
Any ideas what happened here? I also tested with the boiler switched on and isolated, with all the CU off and it was the same. The boiler circuit did not show the 400V.
Cheers.