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sparky1502
I have been testing property's for my local authority. now we are required by our company to do between 3-5 periodic's per day. I have been testing the zs at the last light on the circuit , the theory being that any fault or lack of earth will show at the last light. when i went to college this morning to do a practical test on a rig i went to the light at the end of the circuit for my zs reading only to be told that this is wrong and i should check every light on the circuit and get a zs reading at every light then note down the highest for my result. is this something you do or am i right and just look for the last light.?