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Old 06-16-2021, 04:59 AM   #1
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Onan 5500 HGJAB output wiring

before I start digging into my genset, does anybody happen to know which of the 2 outputs (the black and black/yellow wires) are attached to which breaker?

My genset has a 30a and a 20a breaker, looking at the wires coming out, they appear to both be 10ga from the generator and into the coach, so it's not obvious which is which just by looking at it, and I'd like to avoid untaping all the connections if I don't have to.

Thank you!
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Old 06-16-2021, 08:01 PM   #2
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Quote:
Originally Posted by jvanick View Post
before I start digging into my genset, does anybody happen to know which of the 2 outputs (the black and black/yellow wires) are attached to which breaker?

My genset has a 30a and a 20a breaker, looking at the wires coming out, they appear to both be 10ga from the generator and into the coach, so it's not obvious which is which just by looking at it, and I'd like to avoid untaping all the connections if I don't have to.

Thank you!
https://www.dropbox.com/sh/z713aum8w...mJkUrwq_a?dl=0
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Old 06-17-2021, 06:11 PM   #3
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those manuals can help.. i posted a general pic in another thread I think you are on..

T1 T2 T3 T4 are what is used.. in many cases..

you may want to find your rv wiring also,, the genny will either have a L1 hot, L2 nuet and a gground.. or 2 hots and 2 nuet and a ground if wired split..
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Old 06-18-2021, 05:32 AM   #4
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Found it. the black/yellow wire is attached to the 20a breaker, the all black wire is attached to the 30a breaker. It's buried in the Service manual.

now to trace that all back, it appears that my 'house' power in the rig is connected to the 20a side, which sucks if you're trying to make coffee at the same time the converter is drawing max load to recharge batteries after a long dry-camping night.

Thank you.
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