Step-by-Step Guide to Transformer Installations

Step-by-Step Guide to Transformer Installations

Do you really have to read through all eight pages of Art. 450 just to connect a transformer?  

All you wanted to do was install a 30kVA, 120/208V transformer to supply receptacles in a new office structure on the production floor. The plant manager is adamant about complying with the NEC, so you turned to Art. 450. Not only does it take up eight pages, but it also looks like it could be a mind-bender because it starts off by listing eight exceptions to its scope.

The good news is this situation isn’t as bad as it seems at first glance. Before we look at a strategy for mak

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