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Tractor Talk Discussion Forum

Re: Generator Test Revisited RANT ALERT

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RMinVa

07-10-2014 07:31:20
99.196.57.15



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John T, I have an example I'd like to get your opinion on. The line that brings electric down the road I live on has 7,200 on the top wire and the bottom is the ground. It's the same system that was put in in 1948 here. Each pole has a copper ground wire down the side of the pole and goes to the bottom of the wood pole in the earth.

Over the years in ice storms I've seen that bottom line break between poles and fall. The Hot line(7,200) was still connected and we still had power. In fact I've seen that condition like that for as much as 6 days before the power company got around to making the repair. And the power stayed on for all the houses down this road till the repair was made.

What if any type of danger were the houses/people in under this condition?

I have my generator wired with a mechanical interlock from a dedicated breaker (for generator) that is back fed, to the main breaker. "can't turn generator breaker on unless main is off and main can't be turned on while generator breaker is on"
It's legal here to operate with this setup.

Do you see potential problems with this setup?

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John T

07-10-2014 09:36:40
216.249.72.121



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 Re: Generator Test Revisited RANT ALERT in reply to RMinVa, 07-10-2014 07:31:20  
What if any type of danger were the houses/people in under this condition?

Its done often after a wind storm as earth serves as the current return and you still have some service at least. Id have to stop and think to analyze all the dangers SO NO WARRANTY IM TALKIN OFF THE TOP OF MY OLD HEAD NOW LOL, there are indeed stray current paths along the surface of or down deeper into earth so especially on wet earth your body could get in parallel with such a current path and given the right set of wrong circumstances some current may find a path through your ticker and it only takes like 30 to 50 milliamps to make it de fibrillate I think

"I have my generator wired with a mechanical interlock from a dedicated breaker (for generator) that is back fed, to the main breaker. "can't turn generator breaker on unless main is off and main can't be turned on while generator breaker is on"

It's legal here to operate with this setup.

Do you see potential problems with this setup?

NOPE as long as the interlock mechanism is in place you cant backfeed the utility......

John T

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RMinVa

07-10-2014 09:49:27
99.196.57.15



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 Re: Generator Test Revisited RANT ALERT in reply to John T, 07-10-2014 09:36:40  
As always thanks. Just wanted to see what you thought.

The post above that was tragic, that would not have happened if the new guide lines of NFPA 70e were being followed. Just finished my last class(12 total, once annually) 3 weeks before I retired. I'll have to say that if NFPA 70E were followed there would be few if any accidents from electric. I did electric work(hands on) for 29 years and feel lucky I never got hurt by it. Yes I've been shocked and yes it hurt some but always walked away after the job was finished. So I did some the old way and a lot the new way. The new way is safer. It all comes down to training and culture change. Thanks

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