J
Jimmyb
I got of my brother on the way home from work about his rcd tripping, when I got there I turned off all mcb's and still rcd wouldn’t reset, tested rcd and it was faulty, replaced rcd and tested it to find results good, connected wires back up to find rcd would turn on.
I then ir test circuits between neutral and earth and was getting 0 ohms on the upper ring main, went round and checked once again !! lol there was nothing lefted turn on eg fcu, I then tested resistance to find 0.21ohms on the ring so though to myself I can now narrow it down to a certain area, before I went any further I decided to ir the last circuit on the board which was the cooker and also found n-e @ 0 ohms, I then decided to ir test between the 2 circuit’s natural’s and earth's and found that the natural’s from ring had a fault to earth on all other circuits on the buzz bar and the cooker had a earth fault between all other neutrals.
I 1st thought it got to be a nail or screw thought both wires as it's across 2 circuits but as I’ve only been into the game for a few years now since collage I didn’t want to jump to anything conclusions and do any unneeded work. I traced the cable to find the cooker cable went straight down under floor boards and up to cooker sw and the ring when up from cu so the cable could be anywhere near each other.
I thought seen as it was late I would disconnect the cooker circuit and sort that tomorrow morning properly just replace cable as it was only 5m away and not to bad job to do and try and get skts sorted out tonight, hoping with my limited exp. that it would be a neutral trapped against metal box ect and maybe not nail and since there is only 7 skts I thought id check them, they where all fine so left all sockets pulled out from bb and ir test again to still find fault there, by this time he wanted to go to bed as he goes to work at 4 and asked me to leave it for tonight and come back tomorrow afternoon and if I could just get the other circuits to stay turn on that would be great.
The conclusion I came to was that it had to be cable damage aprox 10 meters from cu but I’m only guessing now so was hoping you guys could give some advice.
Many thanks
Jimmy
I then ir test circuits between neutral and earth and was getting 0 ohms on the upper ring main, went round and checked once again !! lol there was nothing lefted turn on eg fcu, I then tested resistance to find 0.21ohms on the ring so though to myself I can now narrow it down to a certain area, before I went any further I decided to ir the last circuit on the board which was the cooker and also found n-e @ 0 ohms, I then decided to ir test between the 2 circuit’s natural’s and earth's and found that the natural’s from ring had a fault to earth on all other circuits on the buzz bar and the cooker had a earth fault between all other neutrals.
I 1st thought it got to be a nail or screw thought both wires as it's across 2 circuits but as I’ve only been into the game for a few years now since collage I didn’t want to jump to anything conclusions and do any unneeded work. I traced the cable to find the cooker cable went straight down under floor boards and up to cooker sw and the ring when up from cu so the cable could be anywhere near each other.
I thought seen as it was late I would disconnect the cooker circuit and sort that tomorrow morning properly just replace cable as it was only 5m away and not to bad job to do and try and get skts sorted out tonight, hoping with my limited exp. that it would be a neutral trapped against metal box ect and maybe not nail and since there is only 7 skts I thought id check them, they where all fine so left all sockets pulled out from bb and ir test again to still find fault there, by this time he wanted to go to bed as he goes to work at 4 and asked me to leave it for tonight and come back tomorrow afternoon and if I could just get the other circuits to stay turn on that would be great.
The conclusion I came to was that it had to be cable damage aprox 10 meters from cu but I’m only guessing now so was hoping you guys could give some advice.
Many thanks
Jimmy
, i just wanted check that it gona be cable damage and not something else as it was across 2 different circuits
