someone i know just had some decking fitted,decking included socket circuit and lighting on it. the chippie did the wiring.....no certs, nothing.
40A mcb, swa 4mm running under rose bush for 40 metres to a enclosure, dp rcd main switch, 16A mcb for sockets(ring circuit?), 6A lights. lighting/socket circuits on decking ruin in twin and earth .
mate says ''switch the lights on and it trips rcd, the sockets work though.....''
checks lighting circuit out, all IR fine, R1R2 fine, voltage holds on circuit until bulbs are screwed in and then it trips..... bulbs, light fittings suitable for setup.
head scratching time, i says ''are you sure sockets work'' to which i get ''yes ive plugged in one of those socket testers''. ''ah but have you tried an actual appliance?''..........reply '' er no''. plugged in a lawnmower and that tripped the rcd.
and the fault was............................
40A mcb, swa 4mm running under rose bush for 40 metres to a enclosure, dp rcd main switch, 16A mcb for sockets(ring circuit?), 6A lights. lighting/socket circuits on decking ruin in twin and earth .
mate says ''switch the lights on and it trips rcd, the sockets work though.....''
checks lighting circuit out, all IR fine, R1R2 fine, voltage holds on circuit until bulbs are screwed in and then it trips..... bulbs, light fittings suitable for setup.
head scratching time, i says ''are you sure sockets work'' to which i get ''yes ive plugged in one of those socket testers''. ''ah but have you tried an actual appliance?''..........reply '' er no''. plugged in a lawnmower and that tripped the rcd.
and the fault was............................