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The HSE rules say isolate else where, so we have an independent isolator outside the consumer unit so it can be isolated before the lid is removed, so why have a main switch in the consumer unit, is there some rule about double isolation?
Seem to remember with E-stops I had to have two contactors in series in case one sticks, but it seems a bit OTT with a consumer unit, there are internal guards so one can safely test for dead after removing the cover, so why do they have an isolator in the consumer unit?
Seem to remember with E-stops I had to have two contactors in series in case one sticks, but it seems a bit OTT with a consumer unit, there are internal guards so one can safely test for dead after removing the cover, so why do they have an isolator in the consumer unit?