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Old 05-18-2013, 08:49 AM   #1
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How to test 30 amp service?

Since owning my MH I have always been able to find a site with a 50 amp service plugin. Memorial weekend I had to take a site with only a 30 amp service. This site is really not a Rv site but a former work area near a boat dock that is allowing me to stay the weekend.
My concerns are being sure the 30amp service is wired properly, I don't know how to test for this.
Also what other pitfalls should I watch for? I assume only running 1 air conditioner is one thing.

If this was a site that had campers coming and going all the time I would not be as worried, but I have no ideal when the last time something was plugged to this site, so I worry!
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Old 05-18-2013, 09:09 AM   #2
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Select Outlet Testing from the menu on the left at this site: RV Electric
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Old 05-18-2013, 09:11 AM   #3
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Old 05-18-2013, 09:13 AM   #4
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The marine plug is probably different from your rv pigtail , so even if the electric is good it may not be useable without the proper adapter. Both of my a/c's work off of 30 amp.
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Old 05-18-2013, 09:14 AM   #5
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You are very insightful. Way to may people plug into what looks like an RV outlet only to find things going up in smoke. The diagram referenced is great.
Attached Files
File Type: pdf 50 amp.pdf (1,007.0 KB, 25 views)
File Type: pdf 30 amp.pdf (1.14 MB, 40 views)
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Old 05-18-2013, 09:17 AM   #6
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This is what most marine plugs look like.


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Old 05-18-2013, 09:26 AM   #7
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if you don't have a surge guard like the two always argued about {do a search} then you really should have one...but if you have a votage tester use that and test for 120v while connect one lead to the round ground then one at a time to the other two...then check the flat two
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Old 05-18-2013, 10:07 AM   #8
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Thanks everyone. Looked over the the Rv electric site mentioned above and learned a great deal. Printed it off to take with me! Thanks again.
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Old 05-18-2013, 10:17 AM   #9
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Short answer: Use a volt meter. If ANY combination of the three terminals yield around 240 volts, it's not safe to plug your rv in. BobGed already gave you the long answer so you will know why.
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Old 05-18-2013, 10:24 AM   #10
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I have a 50 amp RV too. When I test 30 amp campground outlets, I use a 120v-30 amp adapter with a 120v circuit tester.

I use a meter for 50 amp outlets.
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Old 05-18-2013, 11:03 PM   #11
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You could get one of these and use a 30A to 20A adapter with it. It'll show you the voltage. As far as being wired correctly, RedWing has it right.

http://www.ebay.com/itm/DIGITAL-VOLT...item4849c3e175
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