M
marshr02
Hi there. I know that in theory the IR test on a lighting cct requires all loads to be removed (ideally), and the 2 way switching operated and several readings taken - to ensure both strappers are tested. My question is on the logic behind the multiple readings. When the light being controlled by 2/3 way switches is ON, then in theory both strappers, plus the common are live - for a L/E IR test nothing has been missed. So once the lamps are disconnected prior to the actual test - I'm guessing it is assumed you will not know the state of the cct (would the light be ON if plugged in?) hence two tests with one of the 2/3 way switches being flicked inbetween - doesn't matter which? Is this correct. Just curious....Obviously for a 3 way lighting cct there are 8 combinations if you wanted to going running up and down the stairs all day..and if you had 2 sets of 3 way lighting on the same cct....
