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captbarney

110v plug in bump noise

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Sounds like your ATS (Automatic Transfer Switch) doing its job= normal.  Verify you have 120 VAC in the RV and/or locate the ATS and unplug/replug to verify.

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Be glad it does make that sound. That means it is doing its job. Depending on the make and model the time varies slightly. Without more info on captbarneys RV I would say he has a surge gard built into his ATS. When you plug in the surge gard does its job of checking the power and in about 2 minutes if all is good allows power to flow. 

Bill

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