View Single Post
Old December 6th, 2002, 07:59 PM   #8
rsdoran
Lifetime Supporting Member
United States

rsdoran is offline
 
rsdoran's Avatar
 
Join Date: Apr 2002
Location: Birmingham, AL
Posts: 7,372
Quote:
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 120volt...is it?
  Reply With Quote