Conductor sizing for multiple VFD's

[viking684]

I was wondering if someone could please tell me how to calculate conductor sizes for 2, 3-phase, 30- Hp, 460V VFD's, controlling 2, 30-Hp, 3 phase, motors? Would it be done the same way you calculate multiple motors (125% FLC of the largest motor and add the other FLC's)?

 

[jraef]

You are a little sparse on details here.

Where are you located? This is an international forum, although we can deduce to about 90% that you are in North America by virtue of your use of 460V and HP rather than kW but the U.S. And Canada have slightly different codes when it comes to conductor sizing. Also which conductors are you referring to, from the VFD to the motor, or from one feeder to both of the VFDs or separate feeders, one to each VFD?


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