Generator grounding and connecting neutrals

Discussion created by dpw252 on Aug 8, 2016
Latest reply on Aug 9, 2016 by fourseng

We have a few 480 volt 3 phase generators that supply emergency power to our sewer pump stations. we do not connect the neutral as we do not us 277 volts. but what do we do with it. ground it? bond it?

the generator power passes through an ATS which has the local utility power. and no neutral connection or cables run to the control panel.

If there is do we connect the generator neutral to the utllity neutral or let them both float. the ATS is a 3 pole unit so the neutral is not switched.


Michael Reilly

E Supervisor county of santa cruzmichael.reilly@santacruzcounty.us