John Horne wrote:

I am installing some dry lining electrical boxes. Unlike metal patresses there
is no connection for the earth/cpc? What should I do with the earth wire?



Take it straight to the earth terminal on the socket. If its e.g. a
light switch in plastic with no earth, just use a terminal block to
connect all teh reaths together and tuck in the box where it won';t
short. Use plenty of sleecving on the earth wires.