what is the equivalent nec wire to a tt or tn wire

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phil n

Apr 11, 2012, 11:08 AM

We are recieving a new machine tool from europe and they specify to use a TT orTN wire type for the supply mains. What would the equivalent NEC wire type be.

tkrussell

Apr 11, 2012, 01:08 PM

Since the "mains" are building wiring, and fall under NEC jurisdiction, assuming in the USA, THHN/THWN should be adequate.
If you can provide the datasheet for the TN and TT wire, I can confirm.