Posted by modirt on February 04, 2019 at 06:04:27 from (199.187.163.74):
In Reply to: Backfeeding posted by Bob on February 03, 2019 at 15:30:11:
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Dangers to society? In my case, I would never knowingly setup a system that would allow a generator to backfeed into a utility line. So by not doing my homework, I might wind up as a gonnabe, but never a wannabe. There is a difference between ignorant (aka, uninformed) and stupid. There are the arrogant stupids, but I'm not one of them.
And in the case of VicS, he did mention that he had tripped both his main at the meter and his main on the service panel. Technically, that would seem to solve the backfeed issue, provided you actually do it. But folks are human and that means prone to error and considering what is at stake, I can now see the need for a system that takes error out of it. In theory at least.
That solves the issue of justification or need for one. What I lacked (past tense) was the understanding of how one worked. I've spent the past 12 hours getting up to speed and now have a pretty good feel for some of them. Curious, however, that what I now know, I didn't learn here. This thread alone has about 10 to 12 references to "transfer boxes" or "transfer switches", yet none of them explain how they work.
Best explanation I've found so far is to follow along with all 6 parts of this video series:
Seeing how these work raises more questions in my mind, since all of them seem to involve some type of switch to isolate utility power from generator power. The one in the videos even left the mains hot for when the power comes back on.
If starting from scratch, it would seem the safest option of all would be to create parallel circuits with side by side plugs for the appliances you want to run.
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