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Sorry The maths are not correct, i was including the the 3 x 500 watts security lights in the figure, but did't put it in so the it looks wrong the total load at its max is 2130 watts which adds up to 9.2 amps. A 10 amp mcb should not trip as far as i am aware?

Hi bit of advise needed please: I installed 3 security lights with pirs onto an existing lighting circuit, swoped the 6amp mcb for a 10amp, there is only 7 lights on the circuit max demand 630 watts it is only using 320 watts so at its max it is only using 9 amps. It all works fine for a few...

A pir sec/light, i would say since he is a bt engineer i would say bt analogue tester.

? not seen the job as yet, friend tells me he swoped over a security light, it did't work so he checked for voltges on the cable. There is 80 volts ac between live and earth and 80 volts between neutral and earth i told him to do a continuity test from the earth to an earth on a socket were he...