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post #1 of 7 (permalink) Old 11-27-2013, 01:21 PM Thread Starter
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HPIR TESTING- sentinel

How is it possible to test the electrical system without back feeding? you would need a really large generator in order to test anyway wouldn't you? what have others out there told Sentinel in response to this requirement?and what has been their response?
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post #2 of 7 (permalink) Old 11-27-2013, 02:30 PM
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you will get more answers if you post an intro.
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post #3 of 7 (permalink) Old 11-27-2013, 04:17 PM
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How is it possible to test the electrical system without back feeding? you would need a really large generator in order to test anyway wouldn't you? what have others out there told Sentinel in response to this requirement?and what has been their response?
Welcome to the forum. Try and post an intro, you might be better recognized if you do so. As far as Sentinel goes, good luck with that one. you will go broke working for those prices. As far as the HPIR/backfeeding, use the search function here. This has been discussed indepth.

Short answer, the liability isn't worth it. Tell your insurance agent what you're about to do and see how fast they will drop your azz. But to answer your original question, quote NEC where it states backfeeding is illegal without a permanently installed transfer switch. If you don't know what that is, may god help you.........




Last edited by BRADSConst; 11-27-2013 at 09:09 PM. Reason: poor grammer
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post #4 of 7 (permalink) Old 11-28-2013, 09:30 PM
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? . .If you don't know what that is, may god help you.........
Worked on an industrial construction project where the head electrician was an electrical professor from the University of Oregon. When one of his guys was sent to the hospital for a couple of months after grounding out 480 volts with his screwdriver because someone told him the breaker was shut off, I was drafted onto the crew to help out with some low voltage stuff.

My first lesson from the professor -- "When it comes to electricity, never trust anyone, not even God!"

Iíve already told you more than I know.
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post #5 of 7 (permalink) Old 11-29-2013, 03:16 PM
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Worked on an industrial construction project where the head electrician was an electrical professor from the University of Oregon. When one of his guys was sent to the hospital for a couple of months after grounding out 480 volts with his screwdriver because someone told him the breaker was shut off, I was drafted onto the crew to help out with some low voltage stuff.

My first lesson from the professor -- "When it comes to electricity, never trust anyone, not even God!"
Senior year, last semester of college for my bachelors degree in electrical engineering.

The class was PLC programming, and we were working with 240V. The prof said "I know there is at least one of you in here that is curious what a shock at this voltage feels like." He tapped the back of his hand and took the shock in front of the class. One of the craziest things I've ever seen. I had and have since been shocked numerous times with 120V. Never with 240V. The prof was right, I know I was curious as hell. After that, I have no curiosity and do NOT want to experience it.



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post #6 of 7 (permalink) Old 12-03-2013, 05:41 PM
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Hi,

There have been some strong feelings about backfeeding, legality, safety & liability. Found some strong similar views in the associated Electrical Forum. Also found this:

"Exception: Temporary connection of a portable generator without transfer equipment shall be permitted where conditions of maintenance and supervision ensure that only qualified persons service the installation and where the normal supply is physically isolated by a lockable disconnecting means or by disconnection of the normal supply conductors"

Regarding - "When it comes to electricity, never trust anyone, not even God!"- that's why you learn to always check the circuit & not take anybody's word on it being OFF

Regardless, if you don't know what your doing, this shouldn't be done
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post #7 of 7 (permalink) Old 12-05-2013, 09:51 AM
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Hi,

There have been some strong feelings about backfeeding, legality, safety & liability. Found some strong similar views in the associated Electrical Forum. Also found this:

"Exception: Temporary connection of a portable generator without transfer equipment shall be permitted where conditions of maintenance and supervision ensure that only qualified persons service the installation and where the normal supply is physically isolated by a lockable disconnecting means or by disconnection of the normal supply conductors"

Regarding - "When it comes to electricity, never trust anyone, not even God!"- that's why you learn to always check the circuit & not take anybody's word on it being OFF

Regardless, if you don't know what your doing, this shouldn't be done


Nothing in that exception mentions authorizing craigslist flunkies to do it.

That "qualified persons" means licensed electricians.

Professionals are people who can do their job when they don't feel like it.
Amateurs are people that can't do their job even when they do feel like it.
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