Connection for extension wiring

Are you talking 'hidden' as in covered with a blanking plate, or plastered over. Depending on your answer depends on the answers received.

HTH

John

I was thinking of plastering over the hole. Do you think that a blanking plate is essential? Blair

IANA electrician...

ISTR that:

If you run the wiring from the previous and next points in the ring to the newly located sockets, no - you can plaster over the hole. The new wires would, of course, have to meet the rules for depth behind the surface, location, etc.

If you put a junction box in, then the wiring within it should be accessible, eg blanking plate. This may also be a good idea from the point of meeting the cable location rules.

In practice, if you are absolutely certain that *your* join would neveer need attention (eg that there was no possibility of corrosion, or screws working loose over many years, etc and that the rules regarding cable placement were still being met, etc) then plaster over it..who would ever know?