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Old 06-04-2016, 04:23 PM   #1
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Electrical damage from shore power?

I had an electrician put in a new 30 amp RV shore power pole on my property. I didn't think anything of it when I plugged my trailer in today to dewinterize and all of a sudden the microwave blew out and went dead and my air conditioner made a horrible sound and stopped and there was an electrical smell in the cabin.

I tested the power outlet and it shows there is a hit ground or not neutral reversed. Not sure what happened but it appears there is damage and I need all of your help to understand all u should look for. The microwave I plugged into the house which is properly wired and it appears dead not even the clock comes on. Could this fry my converter or norcold refer?

I'm really bummed as I hired an electrician to do it proper and now I'm worried it's going to be a major expense and headache.

Comments please.
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Old 06-04-2016, 04:27 PM   #2
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Quote:
Originally Posted by franknj View Post
I had an electrician put in a new 30 amp RV shore power pole on my property. I didn't think anything of it when I plugged my trailer in today to dewinterize and all of a sudden the microwave blew out and went dead and my air conditioner made a horrible sound and stopped and there was an electrical smell in the cabin.

I tested the power outlet and it shows there is a hit ground or not neutral reversed. Not sure what happened but it appears there is damage and I need all of your help to understand all u should look for. The microwave I plugged into the house which is properly wired and it appears dead not even the clock comes on. Could this fry my converter or norcold refer?

I'm really bummed as I hired an electrician to do it proper and now I'm worried it's going to be a major expense and headache.

Comments please.

I'm guessing he wired it as a 240 vac service instead of 120 vac. Use your meter and test between the two angled legs. I'll bet you see 240. It should, of course, be 120 between the angled legs. Also 120 between the one hot leg and the ground pin. Also zero between the ground and the other angled pin which is the neutral.
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Old 06-04-2016, 04:28 PM   #3
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Oh no!
I am guessing that about anything plugged in is toast. Hopefully main wiring survived.
The problem with electricians and RV's is that there is a very specific setup for 30 amp. Sometime they think it is like the old welder or dyer plugs which will fry your RV.
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Old 06-04-2016, 04:40 PM   #4
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Licensed electrician? Did you contact him and and about his insurance coverage?
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Old 06-04-2016, 04:43 PM   #5
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I would be discussing with the electrician how he wants to pay for the damages. Cash or check.
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Old 06-04-2016, 04:47 PM   #6
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It is unfortunate that you didn't spend the money for a Progressive industries EMS Electrical Protection System for your trailer BEFORE everything got fried.

That would have alerted you to an electrical problem PLUS it would not have allowed the improperly wired outlet power to enter your trailer and probably destroy everything electrical in your coach.

Once you have replaced everything that got fried, I would HIGHLY suggest that you spend some additional money for the Progressive Industries EMS HW30C device or the EMS-LCHW30 device unless you prefer the portable EMS unit model EMS-PT30C.

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Old 06-04-2016, 04:47 PM   #7
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It just happened today and haven't called him yet. I wanted to get my blood pressure back first. Yes licensed electrician with insurance. And yes I will be filing a claim. I just checked the TV and blue ray. They seem to work. The refer and the ac is what I'm really worried about now. The microwave is an easy replacement.
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Old 06-04-2016, 04:50 PM   #8
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The micro might be fine. There is a ceramic fuse in most of them that you can get at your local hardware store.
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Old 06-04-2016, 05:12 PM   #9
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I tested the new outlet and I get 115v approx in esch of the angled slots and the ground in the top hole. Am I measuring right and is that what it should be? I used two rv extention chords that I've used many times camping so I don't think they are the issue.

Here is what the meter shows.
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Old 06-04-2016, 05:37 PM   #10
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30A 120V RV Receptacle
1 HOT
1 Neutral
1 Ground

30A 240V Dryer/Welder Receptacle
2 Hots
1 Neutral



Although you have a 30A RV Receptacle installed your 'electrician' wired it 240V

If you measure voltage between the 2 slanted slots you will get 240V (should measure 120V)

Microwave may just be ceramic fuse

A/C Unit.....fan motor and compressor motor probably fried

Converter...most likely damaged

Fridge if ON AC.....hopefully the 5A fuse on control module blew

Good luck!
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Old 06-04-2016, 11:54 PM   #11
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Coincide tally, I just ordered (and I mean like 3 minutes ago) my second HW30C. I had one in my Tab, and I want one now in my 2106DS.

I am also convinced after multiple recent stories of home based "30 amp" outlets being installed as 240 incorrectly, I am convinced that like surgery it may be best to put a clear sign reminding the electrician what you need, and demand a test before they leave.
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Old 06-05-2016, 12:59 AM   #12
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Quote:
Originally Posted by franknj View Post
I tested the new outlet and I get 115v approx in esch of the angled slots and the ground in the top hole. Am I measuring right and is that what it should be? I used two rv extention chords that I've used many times camping so I don't think they are the issue.

Here is what the meter shows.

You should only be reading 110 volts on one of the slots, not two. It's wired wrong.

Not all electricians are familiar with RV power cords.
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Old 06-05-2016, 01:21 AM   #13
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Share these links with your electrician

http://www.myrv.us/Imgs/PDF/30-amp%20Service.pdf

RV Electric
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Old 06-05-2016, 05:31 AM   #14
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There is no magic formular to RV cords. The guy hooked 240 volts to a 120 volt outlet.

This is not a simple mistake, you need to run extra wire and install a double breaker in the panel.

That outlet doesn't even have a ground. Did he tape it off ?

An amateur who reads the writing on the outlet would see this.
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