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Old December 6th, 2002, 08:59 PM   #8
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rsdoran is offline
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Join Date: Apr 2002
Location: Birmingham, AL
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I always ground one side of a control transformer (X2 out of habit). I look at it as a new power source, so by grounding X2, you create a "neutral" conductor. Although, there's no requirement that it MUST be grounded...
So if you need 220/240 single phase and use a transformer to step down from 480 you GROUND one side of the transformer?

BTW doesnt using X2 imply the of use 120v single phase control transformers? Control voltage isnt always it?
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