Hi all, great forum.
Today I went to B&Q and bought 2 new wall lights and a pendant light. I took the old fittings down and did a straight swap (including new 2-gang switch as the old one was looking a bit tired). The lights are working fine, but I'd like to know what I did!
Ok, This setup must be very common, 2 wall lights either side of the fireplace and a pendant. There were 4 wires present at the pattress box behind the switches. I used a phase tester with all cores disconnected and alllight fittings removed, there was one live core out of the 4. The other three all appeared to be Switched live to the three fittings as there was 1 jumper wire from 1 switch to the other. At all three fittings there appeared to be 1 switched live and this is what I'm curious about; there were 2 cores wired to the neutrals of all three fittings. What's this all about?
My basic DIY book lists the two standard wiring types, junction box (what I think I have) and loop-in. I'd really appreciate being filled in on what's going on for future reference.
Sorry for the long post. Thanks all.
Today I went to B&Q and bought 2 new wall lights and a pendant light. I took the old fittings down and did a straight swap (including new 2-gang switch as the old one was looking a bit tired). The lights are working fine, but I'd like to know what I did!
Ok, This setup must be very common, 2 wall lights either side of the fireplace and a pendant. There were 4 wires present at the pattress box behind the switches. I used a phase tester with all cores disconnected and alllight fittings removed, there was one live core out of the 4. The other three all appeared to be Switched live to the three fittings as there was 1 jumper wire from 1 switch to the other. At all three fittings there appeared to be 1 switched live and this is what I'm curious about; there were 2 cores wired to the neutrals of all three fittings. What's this all about?
My basic DIY book lists the two standard wiring types, junction box (what I think I have) and loop-in. I'd really appreciate being filled in on what's going on for future reference.
Sorry for the long post. Thanks all.