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NEC500 / NEC505

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magneticted

Electrical
Mar 5, 2004
51
From the point of view of electric motors whereas UL are moving to harmonizing the US zone requirements etc.Are class 1 division 1, and class 1 division 2 still applicable, or is now the correct thing to do to offer class 1 zone 1 or class i zone as the case maybe. Or are the two concepts runninig in parallel.And they choice is still down to the specifier
 
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