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Old 09-07-2012, 07:51 PM   #1
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I wanted to run the generator for awhile today so I fired it up and it seemed to switch over like it's supposed to. Problem is it's only powering half the trailer. When I turn of the generator and switch to shore power everything is normal.
I don't know enough about generators and transfer switches to troubleshoot it so if you do, I'd appreciate your input.
<div style="text-align: justify;">Onan Generator with a WFCO T-57 transfer switch<div style="text-align: justify;">50 amp service..
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Old 09-07-2012, 08:14 PM   #2
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Check the Genny itself, there are two breakers on the front (I think behind the front panel). Turn both off then back on and try the Genny again and see if that cures the problem. If not they may be a wire not tight in the xfer switch or a bad contact in the switch, but I would try the breakers on the Genny first.
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Old 09-07-2012, 08:47 PM   #3
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Make sure you disconnect from shore power before starting the gen. The circuit breakers, as noted above are probably the culprits.Edited by: Adamsvr
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Old 09-07-2012, 11:32 PM   #4
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Thanks folks... I'll disconnect from shore power, check the breakers then try again on just genny power..
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Old 09-08-2012, 09:12 AM   #5
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Checked the breakers this morning and discovered that the 20 amp one had tripped. Something on that circuit, dryer or rear air, must have been on when the transfer switch engaged.. maybe. Anyway, all is well and I thank you for your quick and accurate replies. This is what makes for a great forum.
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Old 09-11-2012, 12:13 AM   #6
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Travelling Andersons,

We had the same issue with one Genny breaker when my wife kicked in the hair blower while I was running the AC last month. Ginny breakers were hidden behind a wiring harness but I found them after reading the forum!


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Old 09-13-2012, 04:24 PM   #7
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Is it necessary to disconnect shore plug as aome sort of precautionary measure when yo use your Ginny
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Old 09-13-2012, 08:54 PM   #8
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No.. The transfer switch does that for you.
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Old 09-13-2012, 09:17 PM   #9
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Thanks Steve, I thought that was the case but some of the recent previous post with breaker problems mentioned topull the shore plug.
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Old 09-13-2012, 09:38 PM   #10
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It's not necessary, BUT if you were running the genny because the CG was having power problems and someone was working on it and for some reason the xfer switch malfunctioned or stuck contacts it could be possible to back feed genny power back into the CG power system and the worker wouldn't be too happy. Now granted that is something you hope wouldn't happen, but it is a possibility, especially with the "High Quality Parts" used. So I prefer to pull the AC plug to isolate the rig from the CG power grid, that's just me, you do what you feel comfortable with.
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