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Ring circuit issues

Posted by James Sackett, on Sun 19 Jun 2016 06:24pm

I accidentally screwed into a cable , it tripped the RCD , I inspected the cable and all three wires appear to be OK yet when the RCD is reset there are some sockets in the house that don't work at all , some work enough to make lights show on a digital clock but not enough to turn the tv on and yet others work normally ! Any ideas would be great ?

MARK HARDACRE

Wed 22 Jun 2016 10:09pm

When a screw is removed form a cable the insulation (which is pushed back) covers/springs back (Correction - the 'sheath' outer not 'insulation' inner) and hides the internal damage. Live/line is connecting to earth somehow (by being damaged) and tripping the RCD. Ben's Correct. It is dangerous & that's why your sensitive RCD is not behaving. If in doubt call us out. Mark - Fuse Electrical Services

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Ben Burdass

Sun 19 Jun 2016 08:51pm

James, Any damage to the insulation or cable is very dangerous. The damaged part needs to be replaced unfortunately. The battery of tests to certify a ring main will confirm everything is working. Sorry there isn't better news! Ben

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