RCD tripping

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tamdee

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Any tips. Installed new consumer unit.
Both circuits of lights are tripping RCD.
Both on same side.
Loads of transformers on both circuits but switched off at switch.
Any help of previous would help.
 
Are both neutrals on the correct side, and why are they on just one RCD is this because of the two way switch and a borrowed neutral
 
test for continuity between the neutrals, or liven one lighting neutral and look for a live neutral on different cct with all the other ccts off - the last bit being the non recommened version :D
 
Any tips. Installed new consumer unit.
Both circuits of lights are tripping RCD.
Both on same side.
Loads of transformers on both circuits but switched off at switch.
Any help of previous would help.

Insufficient dead testing done prior to energising circuits in my opinion...

Either low IR on one or more circuits and/or neutrals cross connected between circuits..
or combination of both..
 
Were the lighting circuits on RCDs prior to the new ones being installed? Did you do an EICR before the work and what were the results for the lights?
 
Any tips. Installed new consumer unit.
Both circuits of lights are tripping RCD.
Both on same side.
Loads of transformers on both circuits but switched off at switch.
Any help of previous would help.
Switching off at the switch doesn't always help as most switches switch the line only leaving the neutral. Finding faults of this type require methodical searching with the right test equipment which you probably don't have. A job for the sparks that installed the CU.
 

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