Originally Posted by
manchild
I mean like you said, all you might need is like 30a. You realize thats only 3600 watts @ 120v, right? 10,000 watts seems like a little overkill, no? A lot of portables around 3-5kw range come with multiple 120v 20a outlets all protected on their own breaker. No need for distribution panels and the time and money that goes into that.
As far as grounding goes, both hot leg coils off the generator are center tapped at a single point and then bonded to the frame of the generator, from the frame of the generator you usually get your ground (could technically come off the center tap too), and from the center tap you get your neutral. You won't get a better more stable ground if you bond it to the earth. Your equipment is no better off. This is basically how 1 phase transformers for houses are grounded too, except instead of bonding the hot legs that are center tapped to a frame, it goes straight from the center tap of the transformer to the earth. The earth now becomes a big conductor back to the source. In theory if you have a large enough fault to earth and the service neutral is cut or somehow not part of the fault, you could still get a short circuit and a breaker/fuse could trip/blow since the earth is now a conductor back to the source. Under normal circumstances, most of the current from a ground fault short circuit is going to pass thru the service neutral since that is going to have the least resistance.
Anyways, GFCI or even no GFCI's, in a cord and plug application like this, it just doesnt make sense to make the earth part of the grounding system for safety, and as for the protection of equipment, in this situation, it doesnt even impact it, as it's almost unrelated, as an earth bond and equipment ground are different. I mean even OSHA says you dont need to do this.
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