Greetings Wrenches, I am curious about the requirement or non-requirement to run a neutral conductor in the output circuit for commercial (3-phase) inverters. I understand that this requirement will not apply in certain scenarios simply due to the grid configuration, e.g. 480 Vac delta. I also understand that the installation manual for each inverter must firstly be consulted to check for such requirement/non-requirement, and that any instructions found there will generally take precedence over *NEC* language. *Can anyone speak to any other general rules regarding whether or not to run the neutral?*
Assuming a neutral conductor is run for "instrumentation, voltage detection, or phase detection" per 705.95(B), *would this conductor be counted as a *current-carrying* conductor when applying the adjustment factors found in 310.15(B)(3)(a)?* -- Corey Shalanski Jah Light Solar Portland, Jamaica
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