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Old 09-06-2010, 12:23 AM   #1
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New 30 amp plug flames smoke Help!

Had electrician wire 30 amp at my home. Got Bambi home plugged in and breaker threw with smoke and flames. Have I fried my whole trailer? Lights still work on batteries. Don't know is reversed polarity or something else. I think electrician ran 220 to 30 amp plug is it suppose to be 120 run to it? Help please!
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Old 09-06-2010, 01:08 AM   #2
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Had electrician wire 30 amp at my home. Got Bambi home plugged in and breaker threw with smoke and flames. Have I fried my whole trailer? Lights still work on batteries. Don't know is reversed polarity or something else. I think electrician ran 220 to 30 amp plug is it suppose to be 120 run to it? Help please!
Hi, I think you nailed it; Electrician ran 220 instead of "RV 30 Amp 120 volt outlet" Every RV outlet I have seen says right on the box and on the outlet 30 Amp / 120 volt. Hope your trailer isn't too badly damaged.
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Old 09-06-2010, 01:28 AM   #3
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Once electrician changes plug to 120 volt 30 amp can I plug trailer in? How do I find out if everything is ok or not? I took off breaker cover and all wires look normal. Do I just try out to see what works?
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Old 09-06-2010, 01:42 AM   #4
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Trailer plug

Take your trailer and put on a 15/30 amp adaptor plug use a medium 14 gauge regular extention cord and try it in a regular household 110v. 20 amp circuit DO NOT RUN AIR CONDITIONER. You should get a good indication of what works and what has been voltage surged. from a former rv service tech.
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Old 09-06-2010, 01:49 AM   #5
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Take your trailer and put on a 15/30 amp adaptor plug use a medium 14 gauge regular extention cord and try it in a regular household 110v. 20 amp circuit DO NOT RUN AIR CONDITIONER. You should get a good indication of what works and what has been voltage surged. from a former rv service tech.
Hi, this is great advice; Use your adapter 15/30 amp and plug it into a regular house recepticle to see what works what doesn't.
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Old 09-06-2010, 01:54 AM   #6
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Thank you! Once I try household power to check for damaged items then can I try 30 amp/120 for a/c?
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Old 09-06-2010, 07:08 AM   #7
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We had a sort of same problem...we were(and still are) hooked up to an old house, but the electric had been upgraded. It had 20 amp breakers that were on the verge of being worn out. Because the AC would keep tripping that particular breaker we were on. So we removed (after getting advice from all) the 20 amp breaker and replaced it with a 30 amp breaker...took the old converter plug off and it was then that we saw the electrical damage it had been doing...then went to an RV place and purchased a converter plug for six dollars. This picture is the old converter plug...pretty spooky huh?
But still we DO keep an eye on what is running and what is NOT running, being careful all the time to not run the compresser on the AC when even making coffee water, or the small microwave... That new converter/adapter plug fixture was yellow in color and works fine...it's about the size of a goose egg.


You don't want to give the air conditioner a hard time!
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Old 09-06-2010, 08:22 AM   #8
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redhawkerII the "advice you got from all" is wrong. NEVER NEVER NEVER upsize a breaker. The wiring in that circuit is desigend to take a load according to the breaker. Your'e lucky you haven't burned down your house. The same damage to the adapter (converter) plug may have also happened to the wiring in your house. If you continue to use this circuit like this you are going to burn down your house and kill someone. When the fire marshall discovers that you have upsized this breaker with out upsizing the wires and receptacles you will be held financially and criminally responsible for your actions. Please correct this error immediately I don't want to read about your untimely death.
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Old 09-06-2010, 08:34 AM   #9
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Thank you! Once I try household power to check for damaged items then can I try 30 amp/120 for a/c?
I don't see a problem, any one feel free to jump in on this. Damm that plug picture is scary.
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Old 09-06-2010, 08:39 AM   #10
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That's a real safety hazard

Never upsize the breaker, it is designed to protect a certain wire size. I would say the reason you blew up the plug is because 240 volts was wired in, instead of 120. As a result the second leg of the 240 was shorted directly to the neutral bus, which is probably grounded. You may have lucked out in this case. There are only a few things tha run on 120 in your trailer, the AC, the converter and anything you may have had plugged into the 120 volt outlets. If the AC was off, it's probably OK. The inverter on the other hand may have been damaged. If you had the old buzz box type, it may have survived, but the newer elctronic type may have been fried.
I find it amazing how many electricians don't know that there is a specific plug for RVs. I also understand why, there is just not that much call for that type of work. The outlets for RVs are clearly marked "For RV use only"
Hope you didn't let the smoke out of everything. You know that everything electrical works on smoke. Because when you let the smoke out, it doesn't work any more.
Hope all of your stuff still has the smoke inside, Good Luck
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Old 09-06-2010, 08:46 AM   #11
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Clyde43 I would hold the electrician financially responsible for the damages if any to your trailer. Have the trailer checked out and repaired if neccessary by a reputable RV dealership. Present the bill to the electrcian and get payment before he repairs your house. If he refuses to pay report his actions to the local power authority before he erases his mistake and repairs your house. Any qualified electrician should not have made this grave error.
TG twinkie clyde 43 has the 220 problem and redhawker has upsized his breaker himself. two differnet problems.
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Old 09-06-2010, 08:48 AM   #12
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I see a problem!

If you run the AC on 14 gage wire, you will destroy the AC compressor motor. You need at least a 30 amp service with #10 wire supplying your trailer to run the AC. Larger wire if you are more than 50 ft from the power supply panel. Just because you can plug it in doesn't mean the circuit has the load capacity. Everyone should get educated on the power requirements of their trailer.
I hope OLBOB was just joking!
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Old 09-06-2010, 08:51 AM   #13
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I accidentally got plugged into 220 at the lake earlier this year and now I have a new AC, refrigerator, convertor etc...

I should have looked at my meter but I didn't. It cost right at $5000.

Hope your damage is not as extensive, but you can file this as a comprehensive claim on your auto policy (assuming you insure your trailer) and you will only be out your comp deductible.
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Old 09-06-2010, 08:54 AM   #14
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RV Electrical

Here is a site with some very good information about RV electrical in layman's language. The Shocking Truth About RV’s | No~Shock~Zone There are currently five brief articles with some good diagrams and explanations on how to test your outlets for proper voltage and polarity.
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