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Wiring Portable Generator to Main Panel..................

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Robert(AL)

10-20-1999 17:26:22

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While were on the subject of 220 volt wiring; I need some advice on wiring my 6500 watt generator
into my switch box, so I won't have to lug those extension cords around during a power outage.
I have 6-4 wire and will be using twist plugs.
Can I just put in a new 30 amp. breaker and extend a line with a plug in, and when I use the generator, just pull the main and the 30 amp. breaker and backfeed the system to the circuits I need to use?

Thanks,
Robert

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Joe Giantelli

04-26-2000 19:59:52

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Re: Wiring Portable Generator to Main Panel.................. in reply to Robert(AL), 10-20-1999 17:26:22

I think there is a way now of hooking up a generator without having to rewire the panel or worry about backfeeding. I saw a product at GENERLINK.com have a look

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John

05-27-2000 16:18:11

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Re: Re: Wiring Portable Generator to Main Panel.................. in reply to Joe Giantelli, 04-26-2000 19:59:52

12 Wire Generator, cannot remember the sequence to attain 120/240 IPh 60HZ anyone remind me?
Thanks, John

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Jim (CA)

10-23-1999 20:57:10

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Re: Wiring Portable Generator to Main Panel.................. in reply to Robert(AL), 10-20-1999 17:26:22

I have a 220 volt sub panel in my garage that I use during extened power outages. first I turn the main off. I have a 220v 40 amp breaker in the sub panel that I backfeed using a twist lock plug mounted in the wall and a 15' estension cord to the generator. This is only used for emergencies. to prevent food spoiling etc.
The only circuit still connected to the power company is the ground (common)but it goes to a 8' copper rod driven into the ground. The legal way has been described but is expensive so we improvise sometimes to save a buck. There is a fine associated with this also. be carefull!

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Robert(AL)

10-22-1999 17:35:24

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Re: Wiring Portable Generator to Main Panel.................. in reply to Robert(AL), 10-20-1999 17:26:22

Hi Steve, Yes, I'm aware of the feedback problem. I would never wire a system that would endanger the utility workers. Looks the only solution is to install a transfer switch or use individual extension cords to my appliances.

Thanks for your input.....

Robert

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Steve

10-22-1999 06:18:19

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Re: Wiring Portable Generator to Main Panel.................. in reply to Robert(AL), 10-20-1999 17:26:22

Hi Robert,
Did you know that linemen have been seriously injured and killed by feed back thru the line from portable generators being operated by home owners during power outages? You should contact your local co op or power company to obtain the proper device that prevents such occurances. If you can't get the proper info for some reason, contact me and I'll see that you get it.

U.S. Alloys Company

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Definitely NOT. Go Here http://www.mosquitonet.com/~nerc/wwwboard/wwwboard.html

10-20-1999 17:52:42

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Re: Wiring Portable Generator to Main Panel.................. in reply to Robert(AL), 10-20-1999 17:26:22

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Kim Hartshorn

10-20-1999 17:52:03

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Re: Wiring Portable Generator to Main Panel.................. in reply to Robert(AL), 10-20-1999 17:26:22

This will work...but!
You don't want a male connector anywhere that is going to be hot! And it is best not to have male to male adapters around for some not-knowing person to accidentally plug in. There are commercial plugs made called cam-locks that are used for power tie-ins they are designed to be put on separate conductors...one each for each hot leg one for neutral and one for ground...the males are designed so that the connector is protected...still you should not leave this in a powered condition.

You should put this system through it's own switch box and lock it out when it is not in use...that will keep the back power from the tie-in when it is not being used. One other big but!

The power company and the electrical code require that a permanent system like you are describing have an automatic cutout to ensure that backup power is not feeding the mains while they are trying to fix them. Basically this is a normally off solenoid that is on as long as the power company feed is hot...when the power lines go down the solenoid cuts out the service entrance and cuts in the backup power. This switch is required by code and by the power company.

Whatever you do just make sure that you do not backfeed power to the power lines.

Work Safe

Kim

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Robert(AL)

10-21-1999 16:33:22

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Re: Re: Wiring Portable Generator to Main Panel.................. in reply to Kim Hartshorn, 10-20-1999 17:52:03

Thanks Kim, for your thoughts on the project. I appreciate it very much. It's hard to find good information on this subject, because of the potential danger associated with electricity. I would never use shortcuts that would indanger the utility workers.

Best Regards,
Robert

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