ggunn
PE (Electrical), NABCEP certified
- Location
- Austin, TX, USA
- Occupation
- Consulting Electrical Engineer - Photovoltaic Systems
I am connecting a 480/277 inverter to a 208/120 service through an autotransformer, which is new for me.
I have done this with a 208 delta to 480/277 wye transformer, and it is obvious in that in that case the neutral on the 480 side must be bonded to ground, but an autotransformer has a neutral common to the primary and secondary sides which is bonded to ground at the service. It seems to me that I should not bond neutral to ground at the transformer in this case. What say you?
I have done this with a 208 delta to 480/277 wye transformer, and it is obvious in that in that case the neutral on the 480 side must be bonded to ground, but an autotransformer has a neutral common to the primary and secondary sides which is bonded to ground at the service. It seems to me that I should not bond neutral to ground at the transformer in this case. What say you?
