Rcd lights

1 Oct 2009
Reaction score
United Kingdom

Have a 16th ed cu (half rcd) I need the upstairs lights to be rcd protected.

It's quite an old board so don't think I can get a rcobo for it.

Would it be deemed acceptable to cut the busbar at supply to said mcb, provide a appropriate size link cable from rcd to mcb? Then swop the neutrals obviously...

Sponsored Links
sounds rough, i would have thought any split load board still had compatible rcbos available
It's not ideal to say the least, but I've definitely seen it done.

I take it there's no space on the rcd side? And you can't re-configure the board?

What make/type of board is it? You might be surprised
I don't see anything wrong with the method you are suggesting, Paul.

Though, if you move the MCB next to the RCD protected ones, you only need another small bit of busbar.
Sponsored Links
Thanks all, I didn't think it was the best route but a means to an end.

I'll get the model and take the cover off and have a look, I need to get my meter out and test the rcd before I do anything anyway.
I have fitted a rcd fcu at the CU position to protect Bathroom lights when i can't get an rcbo to fit the board. If it's clearly marked as to the circuit it protects it's not a problem.



DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local