hi

I've just installed two new sockets on a ring main, but when turning power back on to them the RCD trips.

if i just link up to one socket still trips, back to original RCD ok.

Check all wiring and all ok.

Anybody have any ideas?? do i need to get a higher rating RCD??

Currently 80A or 30mA i think thats right.

thanks

Check again, because clearly it is not.

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I'm sorry - I can't come in to work today, the voices are telling me to stay at home and clean the guns.

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thanks for the reply.

should it be okay though if all wiring is okay??

are there any particular wires that i should check to see if they are loose?

Check in your new socket that you have not pinched any cables against the backbox and shorted out the neutral to the earth. How and what have you wired ??? is the socket you have come off of on the ring main ? what cable have you used to add your socket .

Nick

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If it isnt broke dont bloody touch it until it bloody well is and if it is broke then make drawing of the connections before you remove the broken one and replace with a new one LoL

hi

yer the socket i have put the two new sockets on is on the ring main because their are only two cable coming in and out of it.

i've used 2.5mm2 wiring.

i've put a socket on the plug on the circuit and another socket off that.

starting from scratch then, how did you do the installation? a step by step guide may help us help you.

as stated though, look for the obvious, cables caught on the screw at the back of the box or trapped onto the box screw eyes/lugs. failing that, a daft one but, make sure you have the polarity correct.

if all of that fails, make sure you havn't caught the cables when putting your floor back down.

finally, how did you clip the cables? there is a reason i ask it.

i've have a new socket which run's off the socket in the circuit, along the wall and up to the socket. then from that socket to the other socket.

i can't lift the floor boards up as the floor boards run in a different direction to the place i want the plugs.

i can't see any cables caught, and covered the with the pvc covering. i've nail that on but can't see if i have caught any of the wires, the nails are to far away from the wire

have you got a multimeter? if so disconnect the cables you have added and test between all the individual cores, my betting is you have aught a cable when nailing the capping on. You have made the ring back up havent you ??? as in you have broken the two cables at the existing socket then conected one old with one new and then joined the other old set to the new set with crimps.


Please draw a sketch or take a photo showing what you have done and then we can assist further.

Nick

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If it isnt broke dont bloody touch it until it bloody well is and if it is broke then make drawing of the connections before you remove the broken one and replace with a new one LoL

sketch

What fuse/mcb protects this circuit?? if it is a 30 or 32A then you have created a potentially dangerous situation by spurring off of a spur. You are only allowed one unfused spur off of a ring main at one point ie one double socket or switched spur wired with one cable from a socket on the ring. You need to get another cable from your last socket back to the first socket in the ring main to enable you to make it safe. Or you can install a fused spur next to your ring socket and then wire the 2 new ones as the load from that spur bearing in mind that you will only be able to draw 13A from the two double sockets.

Nick

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If it isnt broke dont bloody touch it until it bloody well is and if it is broke then make drawing of the connections before you remove the broken one and replace with a new one LoL

fully concur with Sparkydude, that is why i asked for a step by step guide to what you have done.

just for info, it doesn't matter which way the floor boards run, you can get to where you want with them running either way, we do all the time.

hi

problem sorted nail in one of the wires.

its protected by an rcb 80A

sockets work ok

do you mean wire another wire from my last socket to the existing socket??

would this add it in to the circuit is instead of creating a spur??

so the existing socket will have four wires in it?? is this right??

thanks

No.. wire from another socket or inbetween the ring and the first new socket fit a 13a fused plate. The risk is in your wiring the firts piece of cable could in theory be over loaded if you had some high current appliances in your new sockets.

is the following possible??

This is what you need to do:

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Mike