[RE-wrenches] 120% rule applying to conductors

[William Miller]

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?