enblethen
Moses Lake, WA USA
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Joined: 01/05/2005
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Did you check for an automatic transfer switch? Even with breakers off there can be a problem here that would cause a direct short either to neutral or ground from a phase conductor.
Bud
Suzuki XL7 pushing Pace Arrow
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poker5150
Ventura County
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Joined: 03/04/2007
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I will try disconnecting all neutrals tomorrow and then put them back one at a time.
I am also thinking of plugging into a neighbors house to see if it works there.
2008 WW LE3305
2004 Ford F-350, 4X4, CC, SRW, 5-inch Pro Comp lift with 35 inch Pro Comp Extreme A/T's, 4-inch MBRP turbo back exhaust w/cat delete, SCT XCal-2, Autometer gauges, intake elbow, and some other mods 
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Salvo
California
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As someone else mentioned, the generator does not have a ground. You have a hot or neutral short to ground. This is a dangerous condition when running the gen. You may get shocked when standing outside and touching chassis.
Others suggested measuring resistance between hot neutral and ground at the MH power cable. Each of the three measurements should be in the meg-ohms.
Next, (if resistance measurement gives no definitive answer) I would take apart all neutrals (they are tied together). Plug in the AC. See if breaker trips. It shouldn't trip. One by one tie back the neutrals while testing after each change.
Sal
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edwardt48
lady lake fl
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keep us posted to problem
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Hurricaner
Hurricane Utah
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Joined: 02/17/2007
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Quote:As someone else mentioned, the generator does not have a ground. You have a hot or neutral short to ground. This is a dangerous condition when running the gen. You may get shocked when standing outside and touching chassis.
If the gen has no connection to ground, then you will not get shocked as you are the path to ground which is connected to nothing on the gen.
Sam
Sam & Kari
Hurricane, Utah
2004 34' Damon Challenger 315
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poker5150
Ventura County
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Just so I get this straight. I will disconnect all neutrals from my trailers breaker panel (i'll number them to ensure they go back in the same order) and then plug the a/c into my garage and the garage gfci should not trip. I then unplug the a/c and plug in one neutral at a time, plugging in the a/c between each new neutral connection, until the garage gfci trips. This way I will know which neutral leg has the issue. Is this correct?
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enblethen
Moses Lake, WA USA
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Joined: 01/05/2005
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I would install some electrical grease on each of the conductors during re-installation. The buss bar is most likely aluminum. The grease will prevent oxidation between the copper conductors and the aluminum buss bar.
You never said whether you have checked the transfer switch.
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poker5150
Ventura County
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I have a manual 12-volt kill switch if this is what you are referring to.
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Salvo
California
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poker5150 wrote:Just so I get this straight. I will disconnect all neutrals from my trailers breaker panel (i'll number them to ensure they go back in the same order) and then plug the a/c into my garage and the garage gfci should not trip. I then unplug the a/c and plug in one neutral at a time, plugging in the a/c between each new neutral connection, until the garage gfci trips. This way I will know which neutral leg has the issue. Is this correct?
First, I would do the ohm-meter measurement. If you don't have a multimeter, get one. Harbor Freight (in Ventura) has a decent meter that also measures current. Next, I would disconnect all ac plugs in your MH. This could include the microwave, fridge and other appliances. Power up the ac. Last, disconnect all neutrals and make sure the breaker doesn't trip. I would then connect the neutrals in a binary order. First connect half the neutrals. If the breaker doesn't trip, you know the short is one of the neutrals not connected. In that case, connect half the wires you have left. This method will quickly hone in on the bad wire.
Good luck
Sal
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Salvo
California
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Hurricaner wrote:Quote:As someone else mentioned, the generator does not have a ground. You have a hot or neutral short to ground. This is a dangerous condition when running the gen. You may get shocked when standing outside and touching chassis.
If the gen has no connection to ground, then you will not get shocked as you are the path to ground which is connected to nothing on the gen.
Sam
That's not what my generator manual states. The yamaha manual says you can get shocked. They suggest driving a stake into ground (which of course no one does).
Sal
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