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Home » Public Forums » GMCnet » 120Vac Wiring from Onan to Coach, 75' Avion w/ 6k Powerdrawer (Does the LII connect to the chassis?)
Re: [GMCnet] 120Vac Wiring from Onan to Coach, 75' Avion w/ 6k Powerdrawer [message #316624 is a reply to message #316618] Tue, 25 April 2017 19:59 Go to previous messageGo to previous message
Jim Miller is currently offline  Jim Miller   United States
Messages: 501
Registered: March 2008
Karma:
Senior Member
On Apr 25, 2017, at 7:30 PM, A. wrote:

> Except that this drawing says otherwise.
> http://www.bdub.net/wirediagrams/120vac-ZEO6581.pdf
> Making "L1" and "L2" sort of meaningless. Like you said, if a PO has mucked with stuff, all bets are off anyway.

I am going to believe what the Onan manual says (as reinforced by what I have seen with my own eyes while repairing them) rather than some diagram found on the Internet. In any case I expect that bdub diagram just has L1 and L2 mislabeled on the receptacle; the fact remains that the two hots on the receptacle are bonded and the neutral/ground conductors are bonded. And if the Onan has _not_ been messed with then the double-wire L2 is bonded to the Onan chassis and would serve as what we think of as a neutral/ground; OTOH the single-wire circuit-breakered L1 feeds the bonded “HOT” conductors in the receptacle.

> Repetition is good for young minds. So here goes again. Whatever comes out of the Onan circuit breaker is hot, and whatever else is left coming out of
> the Onan 120VAC wiring is neutral/ground.

The circuit breaker could be in either leg and be just as effective in interrupting current flow as it is supposed to. It would not be proper to have it that way - but it would work.

> But check with your multimeter before you assume anything.

Agree completely and the test is simple: check voltage between a bare metal spot on the generator chassis and each output wire. If the reading is 0VAC between the chassis and the wire then that’s your “neutral”. If it reads 120VAC then the wire is the “hot”.

—Jim

Jim Miller
1977 Eleganza
1977 Royale
Hamilton, OH



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Jim Miller 1977 Eleganza II 1977 Royale Hamilton, OH

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