If I am sizing wire for DC output, is there a difference in ampere ratings for AC and DC cabling?

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If I am sizing wire for DC output, is there a difference in ampere ratings for AC and DC cabling?

If there is a reference in the NEC 2005, where is it? Any info helps... Thanks

2007-02-22 05:21:04 · 2 answers · asked by alex_blanding2001 1 in Science & Mathematics ➔ Engineering

2 answers

No ... just when you calculate the AC current, you use the root mean square value which is the heating equivalent that corresponds to the same dc current. If you're looking at wire tables, just use the number there. It'll already be RMS for a.c. stuff

2007-02-22 05:25:06 · answer #1 · answered by Gene 7 · 0⤊ 0⤋

amps are amps whether you are speaking of AC or DC.

2007-02-22 15:32:38 · answer #2 · answered by Anonymous · 0⤊ 0⤋