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Author Topic: Wiring (installation) Info for Onan Marquis 7000  (Read 10230 times)

Offline oldmansax

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Wiring (installation) Info for Onan Marquis 7000
« on: September 10, 2006, 11:47:38 PM »
Anyone have a link to an installation or wiring  diagram for an Onan Marquis 7000? It appears the generator was upgraded in my bus at some point but it is still wired to a 20 amp panel. I need to change that but I can't do it without a wiring diagram (nothing is marked). Thanks!

Offline TomCat

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Re: Wiring (installation) Info for Onan Marquis 7000
« Reply #1 on: September 11, 2006, 12:33:22 AM »
On my Onan Marquis 5500 LP it is as follows

Black = Hot
White = Neutral
Green = Ground

Jay
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« Last Edit: September 11, 2006, 04:39:40 AM by TomCat »
On The High Plains of Colorado

Offline Nick Badame Refrig/ACC

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Re: Wiring (installation) Info for Onan Marquis 7000
« Reply #2 on: September 11, 2006, 12:59:54 AM »
Hello Oldmansax,

Here is the Onan direct link to the Marquis 7000

http://www.onan.com/onan/rvgenerators/Marquis/generatorProductDetail.jsp?prdid=prod90017

Hope this helps
Nick Badame
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Offline oldmansax

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Re: Wiring (installation) Info for Onan Marquis 7000
« Reply #3 on: September 11, 2006, 02:25:56 AM »
I have not followed this up very far yet, I am still looking thru the documentation that came with the bus. Jay, my junction box has 4 wires, all of which have been painted over. I will find out the original colors when I get into the box. Nick, I looked at Onan's site before but they just have ads, no diagrams that I can find. All generators I have had dealings with before have either three wires (110 leg, 110 leg, neutral leg, & use the frame for ground) or four wires ( 110 leg, 110 leg, neutral leg, ground leg) unless it was a 3 phase generator which is not applicable here. Do some RV generators produce only 110 volts? In this case, that would mean a 7000 watt unit would produce 110 volts @ 63 amps? The wires on my generator do not appear to be large enough to carry that kind of amperage. ???

Offline TomCat

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Re: Wiring (installation) Info for Onan Marquis 7000
« Reply #4 on: September 11, 2006, 04:33:57 AM »
Oops, of course you're right, there should be 4 wires for that type genny. I have since pulled out my Onan book and here is what it says...

L1 Black
L2 Black (Should have stripe)
N White
G Green

Jay
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On The High Plains of Colorado

Offline oldmansax

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Re: Wiring (installation) Info for Onan Marquis 7000
« Reply #5 on: September 11, 2006, 11:50:57 AM »
Thanks Jay! :) Now all I have to do is find, purchase, and install new panel, remove all old wiring, reroute what's left to the new panel, re-wire generator and shore power lines.........HMMMMMM, this aint gonna happen today