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Old 09-24-2020, 11:58 AM   #1
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Excitement

I hired a "professional" contractor to wire the 30A circuit in out new barn. Plugged in to the circuit and was met with immediate arcing sounds, smoke from the RV circuit panel and general mayhem. Unplugged within 5 seconds.

After the smoke cleared and my heart rate lowered, I pulled the panel to inspect the wiring. Everything looks normal with no obvious melted or fried components.

Where should I be looking for damage? From the general vicinity of the lingering smoke I'm guessing maybe the charger is toast? Everything was off in the RV aside from the microwave clock and charger, both of which come on automatically. I'm not willing to plug into the properly wired 20A circuit before I hear from the group.

Thank you!
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Old 09-24-2020, 12:34 PM   #2
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Unfortunately the converter is toast almost 100% of the time when you plug into 240 volts.

A good amount of the time the fridge control board is also fried.
Sometimes it gets the microwave.

It's hard to say what all is dmamged until you plug into a correct 120 volt power source.

P.S. If you told the contractor that it was for an RV and they installed the correct receptacle, it's their responsibility to repair or replace anything that was damaged by the miswire. 30 amp RV receptacles are clearly stamped that they are 30 amp 125 volt.
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Old 09-24-2020, 12:39 PM   #3
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Yep....just a Bama said. Converter is likely toast and possibly other appliances. Biggest mistake is Residential Electrician see a 30A RV plug and automatically wire it as a 240V Line. RV's running 30A are still only 120V circuits.
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Old 09-24-2020, 12:44 PM   #4
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Time to tell your electrician that you'll deduct the cost of repairs from his bill
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Old 09-24-2020, 01:00 PM   #5
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Thank you for the info. Would it be safe to plug into 110 now to check things out?
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Old 09-24-2020, 01:28 PM   #6
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Me thinks the title of this thread should be changed from "Excitement" to "Disappointment".

Good Luck with what you find....
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Old 09-24-2020, 01:30 PM   #7
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If you are referring to a standard 15a -20a outlet maybe. I would not do that until the worst has been repaired. Such as converter, checking over wiring for charred or melted wires. Even the breaker box will need a good examination. Best left to professionals who have rv experience.
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Old 09-24-2020, 01:37 PM   #8
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Thanks everyone. Talked to my dealer and he walked me through checking things out. Refrigerator, microwave, lights, TV, etc all check out and are working. Converter/charger is most probably working as I get full battery bars when plugged in and 3/4 bars when just on battery. Maybe it makes sense to change it out anyway???? I'm a fix it yourself kinda guy but know nothing about electricity (obviously). I'll check wire runs for melted insulation next.

BTW, contractor has taken full responsibility and has committed to paying for any damage.
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Old 09-24-2020, 01:42 PM   #9
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Sounds like a lucky break, both that damage appears to be minimal and that the contractor is taking full responsibility and has committed to paying for damage. Anyone can make a mistake. A true professional will own their mistakes and make it right.

So did you find blown fuses/tripped breakers? I would take it to an electrician and/or an RV shop to inspect to make sure that something isn't working, but ready to crap out any time.
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Old 09-24-2020, 01:43 PM   #10
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No blown fuses or tripped breakers. I'm hoping against hope I cut power soon enough to prevent real damage.
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Old 09-24-2020, 02:05 PM   #11
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When we get out new place built, we plan on having a RV 30-amp outlet put it.

Thanks for the heads up. I will be very clear with the person installing the outlet that it must be the RV standard plug, 120V, and 30 amp.

Method #2 of learning.
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Old 09-24-2020, 02:15 PM   #12
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I've been involved in many of these threads where the outlet was wired for 240 volts. The converter always gives up the ghost and needs replacement.

This thread although late for you may help that we keep at the very top of the FAQ subforums

https://www.forestriverforums.com/fo...ad.php?t=27223
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Old 09-24-2020, 03:00 PM   #13
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Quote:
Originally Posted by todtc318 View Post
No blown fuses or tripped breakers. I'm hoping against hope I cut power soon enough to prevent real damage.

It's pretty hard to react fast enough to beat the speed of electrons. Damage will be done almost instantly.
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Old 09-24-2020, 03:18 PM   #14
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Letting out the magic smoke is never a good sign. The converter maybe "working" but is probably still damaged and may fail prematurely as a result. I would replace anyway. As far as the other items go, they are usually a little more tolerant but I would look over the circuit boards closely for any signs of overheating.
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Old 09-24-2020, 06:36 PM   #15
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Arcing sounds as nd smoke are a clear indication that som eff thing bsd did happe. A very close examination is in order.

Sometimes damaged items will give off that burned electrical smell for some time after the event so let your nose do some searching.
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