Thread: Cable temp
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Old 07-19-2016, 03:33 PM   #12
djmarchand's Avatar
City: Litchfield, Ct/Punta Gorda, Fl
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The OP said that the cable was spec'd correctly, which I assume means that they met the ampacity criterion and the voltage drop was acceptable.

If the cable was sized near the minimum gauge for ampacity requirements then it could get a little warm at full current. But to the previous poster's question, how warm isn't the issue for safe wire sizing. The issue is does the wire meet ampacity and voltage drop requirements. These can be determined from the sizing tables.

On the subject of fault current, it is more a consideration in fuse selection, not necessarily wire sizing, although the wire size is an input to the calculations.

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