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Old 10-11-2018, 04:26 PM   #1
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Onan Install

I have a 2013 Pinnacle 38FLFS with Generator prep- found a good deal on a new Onan RVQG4000W so going to install ( only have one AC unit so should be fine ). From what i read it should be plug and play on the wiring but not sure on the DC power for starting. Does the wiring package include a hook-up to coach batteries or do I need to have a separate battery for starting the genny? How do you remove the existing floor in the front where genny goes? Also any other tips would be great. Thanks in advance
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Old 10-11-2018, 04:54 PM   #2
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Not plug and play since you have a 50 amp transfer switch. It has 2 hots the 4000 only has 1. Not sure if you can run both sides of the switch that way.
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Old 10-12-2018, 08:15 AM   #3
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Thanks for the info Grumpy - So now what? Check with Jayco on this? Or do I need a 5500 instead of a 4000?
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Old 10-12-2018, 09:57 AM   #4
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I would look for a 5500, but also talk to ONAN to see if you can tie both sides of the transfer switch together.
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Old 10-12-2018, 06:00 PM   #5
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If your unit doesn't have any 240 volt loads, it may be OK to tie the 2 hots together on the generator side of the transfer switch.

If you've ever used a 30amp to 50amp converter 'dogbone' pigtail to use a 30 amp campground pedestal, that's what it does.

Best to double check with Jayco, though.


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Old 10-12-2018, 07:27 PM   #6
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Quote:
Originally Posted by Bullitt6283 View Post
If your unit doesn't have any 240 volt loads,
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Just an FYI RV Geny's don't produce 240 they have 2 seperate 120 outputs. 2 hots and 2 neutrals.
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Old 10-12-2018, 07:40 PM   #7
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Quote:
Originally Posted by Grumpy View Post
Just an FYI RV Geny's don't produce 240 they have 2 seperate 120 outputs. 2 hots and 2 neutrals.
Gotcha.

I have a backup generator in my house which has two 120 volt outputs. When I bond their neutrals together I can get 240 volts across both outputs. That's how I run my 240 volt home well-water pump.



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Old 10-15-2018, 04:22 PM   #8
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I talked to Cummins - They couldn't tell me yes or no on tieing 2 hots from transfer switch together to connect to the Onan 4000 single hot.
Back to square one.
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Old 10-15-2018, 04:32 PM   #9
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I talked to Cummins - They couldn't tell me yes or no on tieing 2 hots from transfer switch together to connect to the Onan 4000 single hot.
Back to square one.
Next try the Manufacturer of the transfer switch. Just ask JAYCO what brand if you can't see it, don't ask about using 4000.
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Old 10-15-2018, 07:53 PM   #10
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Opened the junction box - found only 3 heavy gauges wires - red black and white
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