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I am installing a 3 phase 480/277 primary to 240/120 secondary. I have x1, x2, x3, x4. is the x4 the one to bond to ground?
I helped out didn't I.Switched said:Whatever happened to "The only stupid question is the one you didn't ask"? Maybe it's been years since he's hooked one up and wants to double check himself before he effs it up.
Yeah, but I didn't!:laughing:I helped out didn't I.
If it's 120/240 3ø, then it's a high-leg ∆ system.If its 120/240 secondary, he would need to ground x2 the center tap, since x1 & x4 are the ungrounded conductors.
You are going delta/delta.I am installing a 3 phase 480/277 primary to 240/120 secondary. I have x1, x2, x3, x4. is the x4 the one to bond to ground?
We are here to help, not every body gets the same exposure, I have worked for several strictly residential companies connect buck boost, phase convertors and the like.I would think a master electrician should know this but this should help you figure it out
http://www.acmepowerdist.com/pdf/Page_147-156.pdf