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Can autotransformer be used for distribution?

1306 Views 13 Replies 5 Participants Last post by  Breakfasteatre
Can I use a 600/208 autotransformer for distribution? I have 347/600Y supply coming to a machine shop and need to step down to 120/208y for 400 amp 3-phase panel. 150 KVA autotransformer is readily available. Rule CEC26-266 2(a) seems to say I can and i can't. I do have a solidly grounded neutral available from the primary feed. Is this setup acceptable in Canada?
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He says that he has the autotransformer available. And a neutral for the supply. He also would need a load schedule or calculation to see if it’s suitable.
 
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