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How to calculate cable and cb/fuse sizes for motors

I haven't had to calculate cable and cb/fuse size(s) for single and 3 phase electric motors for some time now, but would like to do so as a matter of interest, so is there a contemporary reputable resource I can use that sets out how to do so (I could google/youtube it but don't know about their repute/accuracy)?


Thanks


F
Parents
  • On an inverter type  VSD you can ramp up with almost no inrush at all if you don't have a load with a lot of initial "sticktion" to overcome, and don't mind a slow spin-up compared to DOL,  apart from needing a bit of thought to avoid EMC and earth leakage related problems, the VSD is better for the motor life, better for average power consumption, and better from the lights dimming inrush perspective as well.

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  • On an inverter type  VSD you can ramp up with almost no inrush at all if you don't have a load with a lot of initial "sticktion" to overcome, and don't mind a slow spin-up compared to DOL,  apart from needing a bit of thought to avoid EMC and earth leakage related problems, the VSD is better for the motor life, better for average power consumption, and better from the lights dimming inrush perspective as well.

Children
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