Primary 208v and Secondary 415v from transformer running through more than 24" of same conduit.

8foldj

New User
Location
Michigan
Occupation
CNC Engineer
What effect can this have on say, ground loops induction, electrical noise, a low phase ( when machine is powered up and drives are running, one phase of 85v and the other 2 are 385v ( these voltages are not exact but just for reference)??

Please advise.

I can give more back story if necessary.
 
I don't fully understand what you have going on. Could you describe those voltage measurements more thoroughly? Sounds like maybe it's ungrounded and it's floating and you are measuring voltages due to capacitive coupling.
 

don_resqcapt19

Moderator
Staff member
Location
Illinois
Occupation
retired electrician
That sounds like an ungrounded system and you are reading line to ground voltages that really don't mean anything...What are the line to line voltages?
 
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