another lectrical Q i'm afraid.
This time my bungalow, other day i took the floor boards up in the upstairs to get at the light wiring, as i wanted to change the switch layout in the living rooms (was origionaly a normal bungalow, but when changed to a dormer, the living room's light switch ended up behind where a corner sofa naturally goes due to a door being blocked up)
anyway, everywhere on the lighting circuit i found junctions (made from uninsulated terminal block) at various socket cables neuterals, living and dining room lights were using the neuteral from the upstairs sockets, live fed via the lighting circuit, which still had a good neuteral but wasnt used, so f*ck knows why it was wired like this,
i wired the 2 lights off a double switch 'properly' using the origional neuterals in the lighting ring, and all works, so i have no idea why these lights were on a borrowed neuteral from the ring main.
any idea's? and what implications does this have for the rest of the wiring? thinking about the RCD, but i'd have expected it to be tripping all the time due to the neuteral from the lights going back down a rcd protected neuteral, but it didnt and doesnt, works off the test button fine,
theres also a circuit in the breaker box that has me stumped, before the RCD there's the 6 amp breaker for the lights (1950's bungalow, single lighting ring for the entire house) and also a 16 amp breaker, this one feeds a spur, but where it goes and what it does i don't know, any ideas to what would want to be unprotected by an rcd that's not a lighting circuit??
the driveway flood light runs off the garage lighting circuit, the garage has a breaker box which is run as a spur from a 32 amp breaker after the rcd, there an unused 32 amp rcd (was still connected up, but found the cable in the floor upstairs taped up) that i've found out was for a lecky shower, but again that was after the RCD as expected,
The kitchen only has 2 sockets in it, and they run from the ring main breaker, there's never been an electric cooker here, and 16 amps is too low for that, no outbuildings or owt,
i just can't think what would want a 16 amp non rcd protected breaker, the place has an alarm, but it's run from the ring main and hence is rcd protected, combi boiler is powered by the ring main too.