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Old 06-26-2012, 07:37 PM   #11
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Most excellent info; better than I had hoped. I haven't heard from service yet but will update when I hear if the thread is still around. At least I'll have general knowledge when they start explaining what happened.


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Old 06-26-2012, 07:47 PM   #12
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I forgot to mention that the host verified voltage exactly as described at my post and a couple surrounding posts. He did not check neutral to ground. I'm definitely getting a voltage meter to verify before connecting. Thanks again guys.


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Old 06-26-2012, 07:58 PM   #13
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Were you there when he checked the 50 amp plug and how did he check it? Did he just tell you it was OK?

The voltage must be checked from each hot to neutral (not ground).
Both legs must read 120VAC. An "open" on this check will show 220 inside the camper on some circuits.

If the hots are checked to GROUND (not neutral) it will "appear" to be OK, but it may not be if the neutral wire is corroded or broken.

Read the attached discussion on campground power.
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File Type: pdf Campground Power.pdf (748.7 KB, 17 views)

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Old 06-26-2012, 08:50 PM   #14
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One side measured 119.8 and the other 119.7. He did check to what I assume was the neutral; the bottom center hole in the plug. I watched him do it.

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Old 06-26-2012, 09:11 PM   #15
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Herk, thanks for the pdf file. I have downloaded another one into my laptop for future reference. Thanks for all the info....
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Old 06-26-2012, 09:42 PM   #16
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Great info there Herk!
Next question, say you're on vacation, pull into a site, run your tester and it shows a problem with the pedstal.
Or, after you hook up and over a period of time, problems with the power source occurs. Hopefully, the campground can fix the problem quickly or move you to another site.
Or, you pull in after check in and there is no one to call.

Guess you boondock for the night!
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Old 06-26-2012, 10:00 PM   #17
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there may have been nothing wrong with the campground wiring. it could have been a worn neutral contact in the socket. results is as described above. a test of the outlet before u plugged in may not have picked up on this. as far as ur camper is concerned, same results.

one thing that i got corrected on here awhile back was the difference between neutral and ground. if they were tied together in the trailer, the ground should have corrected the problem. it isn't code to do it that way. u don't want to tie them together in the trailer. u want that protection between u and the appliance.
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Old 06-27-2012, 12:40 AM   #18
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You can eliminate damage from worn or broken neutral connections by spending the $$ to replace all of your individual circuit breakers with GFCI breakers. Grounded appliances with leakage current (hot to ground) will, unfortunately, trip the GFCI breaker and not be usable. If GFCI breakers aren't available for your AC distribution box, you'll need to find a box that accepts them. Combined AC/DC breaker/fuse boxes could be a lot harder to replace than AC only boxes.

GFCI breakers are one of the solutions for protecting outlets in older homes that don't have ground wires in each outlet. If your state/county/municipality requires upgrading bathroom and kitchen wiring to include GFCI protection; it's a lot cheaper to add a couple of GFCI breakers instead of running wire through finished walls.

GFCI breakers work by measuring the current flow through the hot and associated neutral wires. If the current flow differs my more than a few milliamps (ma) then the breaker trips. This will prevent current flows between the two hot AC input lines.

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Old 06-27-2012, 02:45 AM   #19
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Originally Posted by Sg6923 View Post
One side measured 119.8 and the other 119.7. He did check to what I assume was the neutral; the bottom center hole in the plug. I watched him do it.


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The plug on the right is for 50 amps. Yes the bottom prong is the neutral while the two near the center are the load and the top round prong is the ground. The other plug is for 30 amps. As you're looking at this plug the prong to the right is the neutral and the other is the load while the round is the ground. Just for a reference if anyone needed it.

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Old 06-28-2012, 06:01 AM   #20
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Thanks for the visual. I'm going to spring for the surge protector. Although I think the problem is within the camper, as yet unknown, it just makes sense to not take risks. The protector is a bit pricey but worth it for piece of mind.


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