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 > 2002 Newmar Kountry Star reoccurring electrical problem

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deebailey1956

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Posted: 11/19/19 01:10pm Link  |  Quote  |  Print  |  Notify Moderator

Newmar motor home keeps blowing out 110 appliances. Battery charger, microwave, refrigerator. If I plug in one of these devices, they will be unusable before the day is out. I must run a separate 110 supply to use them. Once I put a protection plugin on my refrigerator and the new evening happen to look up and it was catching on fire. Luckily, I saw it in time to unplug it. Does anyone know what can be done to fix this? Probably replace the charger 6 time on the last 3 years. Now I never plug it into the RV.

Chris Bryant

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Posted: 11/19/19 01:36pm Link  |  Quote  |  Print  |  Notify Moderator

Is this plugged in to a home 30 amp outlet? Sounds like a miswired outlet, wired for 240 vac instead of 30 amp 120 vac.


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deebailey1956

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Posted: 11/19/19 01:56pm Link  |  Quote  |  Print  |  Notify Moderator

No its 50 amp. When its plugged in to 50amp both ACs work fine. Its like a random surge hits and knocks out the battery charger or what ever is plugged in. I finally learned to not plug anything in

CA Traveler

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Posted: 11/19/19 02:03pm Link  |  Quote  |  Print  |  Notify Moderator

Most likely it's a open/partial open neutral on 50A. I got 160V on a 30A pedestal one time.

Beg/borrow/steal/buy a voltmeter and post the AC voltage. If 50A post both hot line voltages. Measure inside the rig as this could be a rig or pedestal problem.


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time2roll

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Posted: 11/19/19 02:04pm Link  |  Quote  |  Print  |  Notify Moderator

Monitor voltage and check for lose connections especially on the neutral. Look for heat related damage such as discolored insulation in the main breaker panel and the transfer switch.

I would test with a resistance load on each side of the panel such as space heater or hair dryer. Monitor voltage at the panel (both sides) as you adjust the heat levels on each side.

Bit of a methodical process to divide, eliminate, and isolate this sort of issue. You may need an electrician.


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Grit dog

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Posted: 11/19/19 02:12pm Link  |  Quote  |  Print  |  Notify Moderator

You should take this to a repair facility....about 3 years ago.


"Yes Sir, Oct 10 1888, Those poor school children froze to death in their tracks. They did not even find them until Spring. Especially hard hit were the ones who had to trek uphill to school both ways, with no shoes." -Bert A.

deebailey1956

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Posted: 11/19/19 02:16pm Link  |  Quote  |  Print  |  Notify Moderator

Not sure about getting a reliable repair person. At Camping World they just replaced the charger.


At least I have a few suggestions to look into. Thanks for that

Flute Man

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Posted: 11/19/19 02:19pm Link  |  Quote  |  Print  |  Notify Moderator

Yes a bad neutral anywhere from the power distribution panel on up to the source can cause high voltage on one of the lines.


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enblethen

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Posted: 11/19/19 02:48pm Link  |  Quote  |  Print  |  Notify Moderator

Is the rig setup with an inverter?
Is the appliances with issue connected to inverter?
Is it an inverter/charger? Make and model?


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deebailey1956

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Posted: 11/19/19 02:57pm Link  |  Quote  |  Print  |  Notify Moderator

It is just a charger. I've had all kinds of chargers but right now it is only a 65 amp, have put in 100 amp, 200 amps. One guy thought I needed to up the amps to keep from blowing it out so he said put in the 100amp. There is some kind of regulator in the electrical department that shows the amps on each line. Not sure what its called

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