codequestion
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How would you size per NEC 2014 cables on the primary side of rectifiers , AC cables?
Rectifiers
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I can't tell you about the NEC code. There are others here who I'm sure can help.
But they will need a little more information.
What's the application? It's rating? Single phase or three phase?
When you say primary side do you mean AC into the rectifier bridge?
Or, is the rectifier fed via a transformer?
codequestion
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The rectifier is 208vac 38 amps to 200 amp 40vdc. Rectifier is in power conversion unit. The 208v is three phase and fed from panelboard. By primary I mean 208v three pase side.
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codequestion
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Then you would have to rate the 208V side at 38A for the chosen method of installation plus whatever fudge factor you have to apply (125%?). For here, it would 10mm2 assuming copper conductors but there is no equivalent AWG.
But something doesn't look quite right with the numbers. You have about 14kVA going in and 8kW out. Odd peaky waveform maybe?
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codequestion
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I was wonderong any article which wpuld say fidge factor in NEC 2014?
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I know not. I'm not from NEC land. But I see the 125% often quoted.
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