step-up 208-240

[benaround]

Transformers, single phase, dry-type, 208v primary ( h1-h2 ) 240v secondary ( x1-x2 )

7.5 kva. AFAIK the primary egc will be useless on the secondary side, is this correct ?

How do you get an egc on the secondary side ? FWIW, I've beed through 12 pages of search.

 

[augie47]

By 250.20(B) it is not necessary for a 240 secondary to be grounded.
250.30(B) addresses grounding such a system.
(Note 250.21 would require ground detection)

 

[benaround]

Thank You , Gus

 

[augie47]

I hope that makes sense. With all the smart folks around here, I get a little worried when there is no other input.

 

[benaround]

I hope that makes sense. With all the smart folks around here, I get a little worried when there is no other input.

Yes it does make sense, sometimes it's the oddest things that will trip me up, but now it's

all clear. When it comes to smart folks and good input, You got nothing to worry about.