I have a 3 phase autransformer fed from a 120/208 system stepping voltage to 240 3 phase. I'm supplying it with 4 wire and a ground. Is a 30kva. I don't need a neutral on my "secondary" is only motor loads. Now my questions is....should I bond the neutral on my ho/xo terminal to my EGC and grounded or keep them separate? I'm inclined to keep them separated since is not a separately derived system. Please let me know thanks!!
Autotransformer grounding/bonding
- Thread starter sanchezjr
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- Illinois
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- retired electrician
An autotransformer is not a separately derived system, and additional bonding on the secondary is not permitted.
It makes sence, I appreciate you sharing your knowledge.
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