Hi all
Pretty new to working for self. Got call out yesterday for a ring circuit that kept tripping rcd. I identified the faulty cable which had low 0.05 IR reading L to N. I followed this to where next point should be but on opening circuit found only one cable...not good. On closer inspection of sockets I found that most of them had c.p.c's cut out. I can only imagine previous spark had thought this good idea as a previous earth fault had been tripping rcd. Why he cut them right out though so they are impossible to extend I don't know. Anyhow now having disconnected faulty cable decided best thing I could do to make 2.5 not overloaded was to change 32amp mcb for 20amp problem being the washing machine, boiler and oven all on this circuit I did expect this would trip out but thought at least I've give them some power back temporalily which had been without for 3 days and protected cable from overheating. I advised at time although cooker had no rating on it this is likely to cause trouble with circuit and really needs own circuit and is likely to trip out and that ring really needs to be rewired with at very least a new leg from board. What has surprised me is landlord has phoned me since and rather than mcb tripping what's happening is when the various appliances are on other appliances lose power. Ie washine machine on and boiler stops working, cooker on washine machine stops working. Why would this be the case rather than mcb trip out? Thanks
Pretty new to working for self. Got call out yesterday for a ring circuit that kept tripping rcd. I identified the faulty cable which had low 0.05 IR reading L to N. I followed this to where next point should be but on opening circuit found only one cable...not good. On closer inspection of sockets I found that most of them had c.p.c's cut out. I can only imagine previous spark had thought this good idea as a previous earth fault had been tripping rcd. Why he cut them right out though so they are impossible to extend I don't know. Anyhow now having disconnected faulty cable decided best thing I could do to make 2.5 not overloaded was to change 32amp mcb for 20amp problem being the washing machine, boiler and oven all on this circuit I did expect this would trip out but thought at least I've give them some power back temporalily which had been without for 3 days and protected cable from overheating. I advised at time although cooker had no rating on it this is likely to cause trouble with circuit and really needs own circuit and is likely to trip out and that ring really needs to be rewired with at very least a new leg from board. What has surprised me is landlord has phoned me since and rather than mcb tripping what's happening is when the various appliances are on other appliances lose power. Ie washine machine on and boiler stops working, cooker on washine machine stops working. Why would this be the case rather than mcb trip out? Thanks
