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Old 09-06-2016, 10:24 AM   #15
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Originally Posted by FCStreamer View Post
Progressive Industries. It has a voltage readout.

http://www.ourflyingcloud.com/2016/0...protector.html
Great point, it's expensive meter but considering all of its OTHER protection features, well worth it.
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Old 09-06-2016, 10:42 AM   #16
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I have a surge protector, but it doesn't display the voltage.
It only indicates correct wiring, reverse polarity, or open ground.
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Old 09-06-2016, 11:02 AM   #17
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This is what we use. I plug it in before setting up. If anything is wired incorrectly, I move to another site.

While plugged in, it's constantly monitoring for voltage and will shut power off if it's too low or too high.

It's also a surge protector.

Cheap insurance that has kicked in several times already and spared damage to the AC and other electronics due to low voltage at several sites.

http://www.bestconverter.com/EMS-PT3...l#.V872KzT3anM
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Old 09-06-2016, 11:04 AM   #18
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I think since i already have a surge protector I will go with a plug in voltage meter.
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Old 09-06-2016, 11:31 AM   #19
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I think since i already have a surge protector I will go with a plug in voltage meter.
Don't blame you, nothing wrong with that. The units mentioned above with the meter are the EMS type portable surge protectors.
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Old 09-06-2016, 12:03 PM   #20
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I use a surge protector that is also a voltage monitor and detects wiring issues (hot/neutral reversal, open ground, etc.). It also automatically disconnects power if voltage is too high or too low. I use it with campground pedestals and when I'm on generator power. I'd rather have my power disconnect itself to avoid damage to electronics than hope I'm watching a meter and can disconnect manually at the moment voltage becomes an issue.

I researched a variety of makers. Rejected progressive dynamics due to customer feedback and bought the Camco.
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Old 09-06-2016, 12:13 PM   #21
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Check the Escapees HDT Forum for instructions on how to build a "50_Amp_Pedestal_Tester"

http://www.hhrvresource.com/sites/de...tal_Tester.pdf

Ignore the early prototype on page 2
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Old 09-06-2016, 12:16 PM   #22
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The surge protector I have will shut off power to the trailer if I here is a problem.
It is very similar to the square black one a couple of y'all have posted pics of.
It shows correct wiring, reverse polarity, and open ground, but lacks a voltage display.
I think a plug in voltage meter along with the surge protector I already have will get the job done.


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Old 09-06-2016, 12:46 PM   #23
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Like several of the other responders I use a voltage meter (mine from Home Depot) that also can show how much a particular appliance is using in watts and amps. Helps me to balance the draw on my 30 amp system. I plug it in near the sink so we can watch if the voltage drops. Heads up, in a crowded campground mid summer with all A/C units running full blast, the voltage can easily go from 120 to 105 and lower. Stayed at a KOA in Maderia Beach when every site was taken and all A/Cs going and we dropped to 109 vac. It may have just been my post, but it was the voltage coming into my unit and my A/C. Also stayed at a county fairgrounds near St. Augustine, and some yahoo decided to boost the voltage since there were so many units plugged in, and my voltage tripped my surge protector. I put the small meter on the post and it registered 160 volts. You need an easy to use portable voltage meter.
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Old 09-06-2016, 12:46 PM   #24
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I use a Progressive Industries EMS-TP30C surge protector. It checks for low and high voltage, broken or incorrect wiring and other faults. It has a readout which gives voltage, amperage, and cycles per second. It comes in a 30 and 50 amp model.
It also will give you a fault code and the codes are printed on the surge protector!
Now the important part.....it will automatically shut off the electricity if it gets to a point that it is too high or low or and if anything happens that would damage your equipment. It will continue to monitor the electricity and has a built in delay of 2 min and 16 seconds. After the electricity corrects itself and the delay is met it will restore power.
Thus you do not have to check it over and over. If you are away from your unit and unable to check anything it will do it for you and shut off the electricity instantly. It also works with a generator. And is water resistant.
It plugs in between the electrical source and your Airstream and you leave it there.
And you might want a lock on it as it has a metal piece to accommodate a lock.
Very good insurance and trouble shooter! And I like it!
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Old 09-06-2016, 12:56 PM   #25
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I also use the EMS TP30C. Progressive Industries EMS-PT30C Portable EMS RV Surge Protector - 30 Amp https://www.amazon.com/dp/B003AL23TC..._mbXZxbZH2RC3V
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Old 09-06-2016, 01:45 PM   #26
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I always check the grounding to the neutral at the box as well as the voltage. I have never had a problem at State Parks but I have had low voltage at 2 private campgrounds and faulty grounding at 3. If I read a problem on the 30A I try the 50A with an adapter and check it. At a campground in Santa Fe we had a faulty ground on the 30A but the 50A was ok. I told the manager and he said my meter was bad. At a private campground in E. St. Louis, they moved me to an adjacent site and replaced the entire meter box while I was hooking up.

Check Harbor Freight for an inexpensive multi meter. Check magazine adds and the Sunday paper adds for their sale flyer. They always have a 20% of coupon and occasionally run the meter as a giveaway with purchase. I carry several. I loaned one to someone at a rally to check their meter and they plugged it into 120v set on 12v. It was a freebie and I had a spare so it wasn't a big deal.
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Old 09-06-2016, 01:50 PM   #27
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I have several inexpensive multi-meters.
There may even be one in the trailer already.
How do I check the pedestal with a multi-meter?
Black lead in the center hole and red lead in each of the outer holes?
Should get in the neighborhood of 120 volts on both legs?
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Old 09-06-2016, 05:02 PM   #28
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I've got a digital one that is also backlit that makes a nice nightlight. I keep it plugged in all the time in the outlet over the kitchen counter and is the first thing I check prior to turning anything on.

I used to have the analog gauge with colors but I'd rather know the voltage than guess on what the voltage range is for each color.

Secondly while you can check voltage initially when you pull in, I've seen voltage erode as other trailers arrive and the A/C units get turned on.

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