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415 and 110v

Is it acceptable practice to run   A cable to a motor with 415 3 phase and 110v for the motor heater or should you have 2 separate cables?
Parents
  • I usually see it when the multi core has 3 phases and an earth which have there own breaker back in the panel and the 110v is fed from a transformer on its own fuses. But have seen it when the main isolator is switched the 110v is still live. What do you reckon on that? Thanks for your help.
Reply
  • I usually see it when the multi core has 3 phases and an earth which have there own breaker back in the panel and the 110v is fed from a transformer on its own fuses. But have seen it when the main isolator is switched the 110v is still live. What do you reckon on that? Thanks for your help.
Children
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