Category Archives: Grizzly mobile

Backfeeding breakers on a generator panel

Backfeeding breakers on a generator panel

I am trying to puzzle out in the event that setup We’m considering is NEC rule compliant.

I realize that backfeeding the panel that is main limited by 20% regarding the panel score, in order for a 200 amp service may have an optimum 40 amp backfeed breaker.

But, the things I can’t find is information on feeding as a generator panel this is certainly on a transfer switch. In my experience, that you could backfeed any amount up to the maximum generator panel rating if you are “backfeeding” into that panel only when the power isn’t on, wouldn’t it be logical? And, the only method that power would surely even arrive at the generator panel could be by switching the manual transfer switch far from grid power up to backup energy.

I recently can’t find any information or documentation about this situation however, and so I had been somebody that is hoping may help.


Re: Backfeeding breakers on a generator panel

I will be having a little bit of a time that is difficult your connections.

My recommendation, is always to draw an easy 1-line block diagram showing just how your circuit is wired and in which the power sources/consumers are.

Fundamentally, from my understanding, you’ll want to locate straight straight back all energy sources (AC Line, Generator, Grid Tied, etc.) sourced elements of energy as well as for an installation that is commercial none of these places should complete up a lot more than the score associated with the breaker panel/bus pubs. For the system that is residential none of the points should soon add up to a lot more than 120% regarding the box/bus club score.

And, in the event the system is just a Grid Tied Inverter, I would personally be careful it never be linked in addition as as soon as the generator set is ready to go (unless you understand what you are really doing and prepared to make the dangers of possibly feeding power back to your genset–which most likely will nothing like). Continue reading