I have a 120/240 3 ph sevice and need to wire a 100 amp 480v 3ph chiller I will be installing a 112 kva transformer under the new code can we reverse wire the transformer 240 pri 480 sec or does the secondary need to be 480/277 to bond the neutral. I can't find it in the code but I though 2014 code now requires a neutral on the secondary side.

Last edited by lite bulb; 04/14/16 09:27 PM.