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Neutral on back up generator #32450
12/23/03 10:44 AM
12/23/03 10:44 AM
Rob  Offline OP
Joined: Dec 2003
Posts: 15
New York
Hi my trade is HVAC.One of my heating customers has the following senario.
5,000 watt generator.
Unused welder feed in his garage, 2 hots and a ground.The generator has a NEMA round 4 conductor 220 output.He wired the generator
to the old welder feed which now feeds the
transfer switch panel breakers. He did not hook up the neutral because there was only the ground. Customer turns off main to house
starts generator, has 220 volts across 30 amp
breaker, 120 to ground off both legs.
Turns on breaker to living room and the TV
smoked. Why? Isnt the ground and neutral one and the same at the generator. I told him he needs a seperate neutral at the generator too.(yes or no) He is calling an electrican
and learned his lesson on wiring generators.
Thanks for your explanations.

Work Gear for Electricians and the Trades
Re: Neutral on back up generator #32451
12/23/03 12:52 PM
12/23/03 12:52 PM
jdevlin  Offline
Joined: Aug 2002
Posts: 402
welland ontario canada
Lot's of code violations but someone else will go into those i'm certain.
Unless he had a double 30 amp breaker he fed his tv with 240 volts.

Re: Neutral on back up generator #32452
12/23/03 01:43 PM
12/23/03 01:43 PM
Ryan_J  Offline
Joined: Aug 2003
Posts: 1,374
West Jordan, Utah, USA
Rob: Could you supply us with any links to an HVAC forum like this one?

Thanks [Linked Image]

Ryan Jackson,
Salt Lake City
Re: Neutral on back up generator #32453
12/23/03 02:00 PM
12/23/03 02:00 PM
Rob  Offline OP
Joined: Dec 2003
Posts: 15
New York
Good web site for all your HVAC needs.
Commercial and Residential forums.


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