Neutral required? Conflicting opinions.

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sandsnow said:
The POCO's do this on their distribution XFMR's all the time. I would have to assume after all these years if it was a problem, that they would discontinue the practice.
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That thought did cross my mind and I agree that it makes sense.

It is a bit out of my area of work so I should just shut up. :)
 
sandsnow said:
The secondary neutral of that XFMR should be bonded and grounded on the pole. There's a code requirement for that or used to be. Can't find it at the moment.
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250.20(B)(1) and/or 250.30(A), mayhaps?
 
sandsnow said:
I read through everything looking for one thing and did not see it.

Is this overhead installation with pole top XFMR or undergraound with a padmount XFMR. The XFMR in my question being the 600V - 120/240V XFMR.

I'm kinda thinking it's overhead given the distance involved.

If the XFMR is pole top, I see no reason for an EGC or Neutral to be used for bonding the case. 250.110(1). It is over 8 feet in elevation.

If it is a padmount, then yes some bonding means needs to be provided. Same code section
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Are you talking about an installation with the 1.7kv-600v xformer and the 600v-120/240v xformers both pole mounted with overhead conductors between them ?
 
dnem said:
Are you talking about an installation with the 1.7kv-600v xformer and the 600v-120/240v xformers both pole mounted with overhead conductors between them ?
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Yes, both being pole top XFMRs. I'm not sure that is what the OP was about.
 
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