kamomeno68
Member
- Location
- Boulder, Colorado, United States
Quick summary: 208/120V Gnded-Wye service, using Solectria PVI-28kW 3P 480/277V inverters, so I need to install a step-down transformer. The inverters require a 480/277V Gnded-wye on the inverter-side of this transformer.
Questions: Does it matter whether the utility-side of this transformer is 208/120V Gnded-wye or ungnded-wye? I believe the inverters will function fine either way, but is there an advantage one way or the other? If I were to use a gnded-wye to gnded-wye transformer, would it be better to still keep the X0 and H0 terminals separate, or could/should they be bonded together? Is there a need to establish a GEC on the inverter-side of this transformer?
Thank you.
Questions: Does it matter whether the utility-side of this transformer is 208/120V Gnded-wye or ungnded-wye? I believe the inverters will function fine either way, but is there an advantage one way or the other? If I were to use a gnded-wye to gnded-wye transformer, would it be better to still keep the X0 and H0 terminals separate, or could/should they be bonded together? Is there a need to establish a GEC on the inverter-side of this transformer?
Thank you.