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  1. PLCs, VFDs, Motors and Controls
    I've got an ac/dc power supply on a Plc that is a class one 24 volt power supply , my doors are to be powered by a class two power supply only , the fuses powering my doors would prevent my doors from ever exceeding class two va requirements . I have class two plenum cable pulled . The company...
    access control classification low voltage installation. plc's remote switching
  2. General Electrical Discussion
    Hi there!! I am an electrical contractor from South-Africa. I have a client that recently installed a 19kva three phase 380/220v back-up generator, on the main feed to his property. The property exists out of one large house and 11 flats. On the property there are 11 stoves and 7 water heaters...
    frequency relays remote switching water heaters
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