Friends:
Keep in mind that Mac asked us about application of a specific section of
the NEC, not if the rule makes any sense.
William Miller
At 05:32 AM 9/28/2012, you wrote:
Are you sure you can't? Since the bus has a rating of 150 A and is
protected by a 100 A breaker, there is plenty of room to not over amp the
bus from the two sources of power.
The amperage from the inverter will cancel amperage coming from the
utility in the feeder. The wire will never supply over the 100 A. The
theoretical max the inverter could backfeed would be 40 Amps in the 100
Amp cable if no loads were being supplied. It would certainly not be a
safety issue. Am I missing something in the code?
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