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Old 09-27-2011, 07:05 PM   #29
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Originally Posted by chucksin View Post
Thanks for the info on the water tanks. I will do that tomorrow. Regarding the extension cord, it is a 12/2 construction grade (yellow) cord, but it is 100 feet which may be too long for what I can get out of my GFI outlets. I'm going to try a different, shorter cord, to see what happens. If that works, I'll go purchase a 50 foot construction grade cord.
I'd be tempted to try other loads on the end of the 100' cord besides the RV. It could be that the breaker is not up to the task. The voltage drop across 100' 12/2 shouldn't, by itself, cause a working outlet and breaker to trip. As another poster suggested, mult-stepped plugs which are not making good contact could be contributing to your issue.

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Old 09-28-2011, 05:38 AM   #30
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Lots of good information here but first things first.

Forget about what is turned on or off in the coach.

What else is connected to the circuit in your garage?

Are you certain that it is a 20 amp breaker? It might be a 15 amp.

If nothing else is connected to the outlet circuit in your garage, disconnect the extension cord and start the generator in your coach.

Do the ac outlets work in the coach? If your outlets and other appliances work properly using the generator then more testing will need to be done to see if you have an overload on the garage/motorhome circuit or a dead short somewhere between the outlet and the transfer switch in the coach.

Turn the generator OFF then make certain that your transfer switch is in the OFF position. Plug the extension into the outlet in the garage. If the breaker pops, you have a dead short between the transfer switch and the garage outlet. Start looking at the a.c. connections in your coach.

For most 120/240V systems using cords or cables of adequate ampacity, voltage drop is not a concern unless cable lengths are well over a hundred feet or the outlet voltage in your garage is less than 110 VAC.

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