Post
by ericmark »
Tue Nov 16, 2010 6:49 am
Is the neutral in the correct neutral bar. That is easy mistake to make.
It all comes down to inspection and testing. After fitting any new circuit you need to test and this will involve insulation with a 500v high ohm meter, continuity of earth with a low ohm meter drawing at least 200ma on the test. Measuring or calculating the prospective short circuit current and earth loop impedance and testing the RCD with a proper tester not test button to ensure it trips at 30ma within 40ms and does not trip at 15ma. All these need writing down and with bathrooms, kitchens and outside need submitting to the local authority building control to get the completion certificate under Part P.
If you list the readings maybe we can spot the fault.