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hertz -> RE: De-construct this jerry rig pls (12/31/2010 2:41:04 AM)
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quote:
ORIGINAL: DarkSteven quote:
ORIGINAL: hertz She lost power over only half the house? That suggests a problem with her internal wiring, or a breaker. If it was a problem outside the house, surely she would lose all power? Nope. The incoming power is 240V. That's two 120V lines, and a neutral. She had got one of the 120V lines cut, so she had one of them fully working. So she would have half her 120V lines nonworking, and her 240V appliances (dryer, maybe range) would not work either. D'oh! UK tends not to work like this. The supply on the cable between overhead poles outside will be three phase, but the houses generally share the phases, which are separated at an overhead transformer. Three phase supply is used in industry but not (usually) in homes. This means if a phase goes you might lose your entire house supply whilst your neighbour is untouched. It is very unusual for a UK home to lose part of the internal supply only from external circumstances.
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