Recent content by Dwa

How do you determine the number of conductors per phase? From my understand, the full load amperage divided by the desired wire size's ampacity rounded up if there is a remainder. An example: If I have a 361 Full load Amp motor from the NEC table and I calculated the motor circuit...

Yes, I do agree that Al is not a good combo, put it's at least can withstand the cable pull. Or maybe steel could be better, but corrosion is worse in that matter. I'm thinking 500MCM could be a better choice. Do you think it wouldn’t make any much difference though between the two sizes? I mean...

Ok, from some Voltage Drop online calculators said 400kcmil would be the minimum conductor size to use in a conduit. Would that be the right ideal? The environment near saltwater, so I'm using Aluminum conduit for no corrosion. Thanks

If specs on a 300Hp electric motor; 480 Volts 3 Phase 60Hz The full load Amps of the motor is 361A, which I found in the NEC table. My distance is 700ft to a control center and I can't seem to figure out what copper conductor size to use. In order to find the Voltage drop I have to know...