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Old 09-22-2011, 06:34 PM   #1
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I smell burning wires!

For the past 3 weeks, I've had the Airstream hooked up to 15amp plug in garage, waiting for the time to get a new breaker switch and garage wired up for 30amp plug.

Got all of this done today, everything wired correctly. As soon as moho was plugged in, all sorts of 'humming' and as soon as I stepped inside, the electrical panel below kitchen area was smelling like burning wire insulation.

Turned of moho breaker switches and unplugged from new 30amp outlet.

Removed all of the breaker switches in moho, figuring after 23 years, it was time for a replacement on all of them.

Anyone have any ideas as to what I've done incorrectly? PO had the moho hooked up to 30amp all the time with no problems like this.

Any suggestions would be greatly appreciated.
Thanks, Derek
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Old 09-22-2011, 06:37 PM   #2
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Check to make sure the electician did not wire up a 220v circuit instead of 110v. Your breaker for this circuit should be a single, not double.
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Old 09-22-2011, 07:21 PM   #3
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Ditto with Alan. It is very common for a good but unknowing electrician to wire a RV outlet to 220v. The plug on the end of the power cord looks like a 220 plug. Before you know it you've got toast.
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Old 09-22-2011, 07:41 PM   #4
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You say "everything wired correctly." Does that mean you put a multimeter on the 30A plug and verified that it's 120v single-phase grounded on the appropriate leg? Or just that whoever did the work is licensed and it looks right?
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Old 09-22-2011, 08:03 PM   #5
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I had all kinds of smoke and fire one time when I wire into a 202V plug one phase plug that was wired 3 phase 270V. It JUST burnt the prong of the plug. Always check the breaker box before scabbing in for electric. One of the drawbacks to mission work in far away places.
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Old 09-22-2011, 08:20 PM   #6
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Hi,
Everyone is correct. Wired for 220 double pole, not 30 amp single pole. Electrician coming back tomorrow. Hoping (fingers crossed) that I was able to get inside moho before I fried the entire electrical system. Thanks everyone for you advice.
Derek
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Old 09-22-2011, 08:54 PM   #7
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After he has the circuit wired correctly, *IF* you gave the proper instructions, ask the electrician about his liability coverage. If you told him 30A 120v rv, the damage is his responsibility.
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Old 09-22-2011, 09:13 PM   #8
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Quote:
Originally Posted by DKB_SATX View Post
After he has the circuit wired correctly, *IF* you gave the proper instructions, ask the electrician about his liability coverage. If you told him 30A 120v rv, the damage is his responsibility.
It's my fault. Wasn't thinking when I said I needed a 30amp outlet for RV. I never specified that it needed to be 120v.
Live and learn, I guess.
Thanks, Derek
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Old 09-22-2011, 09:13 PM   #9
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Even if you didn't tell him what the voltage is. Any electrician worth his/her salt would check the requirements prior to just wiring something. I hope he has good liability insurance. I don't know where the Univolt is on your trailer, if it was connected to 220, that's what you smell burning and humming loud. The transformer in the Univolt is rated for 120 volts. I doubt that the wiring to the outlets (120 volt) was damaged since most of it has insulation rated at a higher voltage rating than 220. If your unit has air conditioning and it was off, chances are it's OK.
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Old 09-22-2011, 09:20 PM   #10
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He has a moho, so it could be more complicated. If the microwave is the old dumb style with a manual knob it's probably fine, but if it's digitally controlled the brain could be fried. There are various other moho-specific things like the transfer switch for the generator to check a s well, and maybe some I have no idea about. Ask someone with lots off moho experience before deciding you've checked everything.
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Old 09-22-2011, 10:15 PM   #11
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Switch for A/C's (both) were off. Gotta figure out where Univolt is located on my '89 motorhome. Sure I'll have stuff to replace. Microwave was turned off, at the main panel where you choose between front A/C and rear A/C.
If Univolt is fried, I can replace it, if Microwave is fried, I can replace it. If A/C's are fried, I wanna go with the 1500 BTU units anyhow.
I'm not really concerned about stuff. Try not to let the little things bother me. After surviving cancer last year, and Radiation this year, every day that I look down at the dirt, instead of up at it, I figure is gonna be a good day!
Thanks everyone for your help with this.
Derek
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Old 09-22-2011, 10:31 PM   #12
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Don't let the electrician off that easy!

If the trailer was there he knew what you were plugging up. If the new outlet fits your original male plug on your trailer's power cord, the electrician should have known, without you telling him. (unless you specifically told him incorrectly 220v, he should make sure)

That female portion of the plug the electrician installed might have printing right on it. Take a close look. All connections on that plug are color coded. The load wire screw connection is brass colored, the neutral screw is silver colored, and the ground is green. And, it may have those three wire locations noted right on the plug at each screw connection for which wire goes where.

If you got a high quality female plug that came in a box or bag, it should have a wiring diagram that came with it, a leaflet or printed on the package. The electrician should have looked at that too.


Edit:
I did not see your prior post, before mine. Your outlook is admirable!

What I am saying is the device itself (the female plug) is designed for a 110-120v circuit, not 220v. The way it is constructed is what should have tipped the electrician off.
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Old 09-22-2011, 10:37 PM   #13
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Quote:
Originally Posted by TG Twinkie View Post
Even if you didn't tell him what the voltage is. Any electrician worth his/her salt would check the requirements prior to just wiring something.
99.9% of the time, someone wanting a 30amp service wants it for a hot tub or maybe for a welder... I'd be expecting someone to tell me "Hey, I need a 110V setup because it's for my RV".

Glad you've got a positive outlook on things - makes everyone's day a lot brighter.
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Old 09-22-2011, 10:40 PM   #14
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What a great way to look at life. I'm one of the lucky ones not having to deal with health issues. My philosophy is that "Everyday above room temperature is a good day"
But; the little things drive me crazy. I need to adopt your philosophy.
Thanks for the wakeup call.
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