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Old 06-27-2011, 12:29 AM   #15
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Back when I was using 30 amp for my trailer, I made an electrical hookup that tested the CG power before plugging my rig in. I started with a 30 amp to 20 amp adapter plug. Then plugged in the tester you referenced into the adapter. That told me if the plug was wired correctly. Then I removed the tester and used a AC meter to test the voltage. Most of the time everything is OK, but every once in a while, somebody has replaced the outlet and screwed up the wiring.

For over/under voltage and a secondary wiring check, I have a surge protector installed in the trailer.

It is a little more complicated testing the wiring on the 50 amp circuits. But, on my HitchHiker, the 50 amp surge protector will catch any problems.
I just thought this would help those not familiar with the use of meters or are uncomfortable sticking things in electrical outlets...
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Old 06-27-2011, 07:28 AM   #16
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I have a little different take on this. BucksMom said the GFI was tripping and that is rarely a problem with the campground supply. A GFI is a safety device that detects a problem in the load side of the circuit, in other words in the RV that is plugged into the GFI outlet. I'll bet that plugging the RV into any other GFI outlet would havethe same result. BucksMom needs to get the RV checked out and the electrical problem resolved. The likely culprits are a defective heater element in the fridge or an improperly wired converter/charger (neutral and ground bonded together).

That said, it is unwise to use a no-ground plug to bypass a tripping GFI. That merely covers up a problem that could be serious.
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Old 06-27-2011, 07:40 AM   #17
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I would not get a warm fuzzy from checking with a meter before I hooked and all was ok. The electical supply can and will change as more hook up to the electric ,the voltage will drop. One of these Progressive Industries
will check several things about the power before it will allow the power to the coach and then will continually check the power and if the power is not in specs it will cut it off to the coach. I can be a pain nut it will protect you coach for power issues.
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Old 06-27-2011, 07:46 AM   #18
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Old 06-28-2011, 02:09 PM   #19
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Originally Posted by Gary RVRoamer View Post
I have a little different take on this. BucksMom said the GFI was tripping and that is rarely a problem with the campground supply. A GFI is a safety device that detects a problem in the load side of the circuit, in other words in the RV that is plugged into the GFI outlet. I'll bet that plugging the RV into any other GFI outlet would havethe same result. BucksMom needs to get the RV checked out and the electrical problem resolved. The likely culprits are a defective heater element in the fridge or an improperly wired converter/charger (neutral and ground bonded together).

That said, it is unwise to use a no-ground plug to bypass a tripping GFI. That merely covers up a problem that could be serious.
Unless I misunderstood the OP, when she hooked up elsewhere, "Everything ran beautifully".. Doesn't sound like her MH is at fault...
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Old 06-28-2011, 06:55 PM   #20
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FWIW, removing the ground prong from a plug is a prohibited, per NEC. I would make a written report to the property manager. This sounds like the CG has their neutral and ground tied together at some point.
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Old 06-28-2011, 08:50 PM   #21
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She did not say if she plugged into a GFCI outlet elsewhere - the problem would not show up on a standard outlet.

The GFCI on the power post won't trip if something upstream from it in the campground has the neutral and ground shorted - the problem has to be downstream from the GFCI. That pretty much leaves only the RV.
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Old 06-29-2011, 07:01 AM   #22
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I think "surge protector" has been used as a generic term to reference devices which really provide a much more comprehensive set of features than simply protecting against surges. These include low voltage.

rick
Ditto, most folks we know refer to them that way. We use the pictured EMS PT50C which makes all the necessary checks and then monitors voltage 24x7.

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Old 06-29-2011, 07:33 AM   #23
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I like the idea of the portable unit, but how does one keep this thing from developing leg and walking off ??!
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Old 06-29-2011, 07:41 AM   #24
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I prefer to call them EMS systems versus Surge Guard's.

A true surge guard provides for only one single function, itwill absorb an electrical surge into the internal MOV's.

An EMS system usually offers multiple functions such as the ever popular Progressive EMS which checks the power pedestal for a variety of faults before transferring power to the coach and provides for surge protection. A similar system built by TRC offers other functions besides surge protection. Another EMS system is the Intellitec EMS which when the coach is hooked to anything other than 50 amp service, 30, 20, 15, it will determine how many amps are available to use and will shed device's inside the coach that are usually used less frequently thereby not going over the total number of amps provided by the shore power. This EMS system does NOT provide any surge protection.

Then there are voltage boosters and autoformers that do not check any electrical functions of the power coming from the pedestal to the coach. However, they will take any low voltage situation that is present at the pedestal and increase it by using an internal transformer such that it will allow you to run appliances and other devices inside the coach. Others that do not have this device will most likely end up ruining some of their sensitive equipment and not even know it until much later. Or if they happen to have one of the previously mentioned Progressive or TRC EMS systems, it will shut off power to the coach. In that respect, they will be protected and not ruin any devices but will be without power until it is above the threshold once again. If you happen to be in extremely hot weather with both A/C's running and this situation happens which is most likely when everyone has their A/C's running and drawing a lot of power, it will make the difference between staying cool or baking in the hot sun without power.

If I happen to be assigned a site where the power pedestal is crap and causes problems detected by my Progressive EMS, I will always ask for a different site. It's my coach and my home electrical systems. If they can't provide one for me, then it's off to somewhere else.

Only my opinion.

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Old 06-29-2011, 12:16 PM   #25
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Quote:
but how does one keep this thing from developing leg and walking off ??!
That metal thingie around the cable is for a padlock and chain. Just what you chain it too may take some creative thinking, though.
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Old 06-30-2011, 07:25 AM   #26
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Gary Et Al,

To prevent a mysterious disappearance of a portable surge protector, can the surge protector be plugged directly into the RV in the electrical compartment and then the 50 amp cord plugged into the device? Then the compartment can be locked with the device tucked away inside?

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Old 06-30-2011, 07:37 AM   #27
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Most 50amp cords are hard wired, but if yours is not, you could do as you ask.



Quote:
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Gary Et Al,

To prevent a mysterious disappearance of a portable surge protector, can the surge protector be plugged directly into the RV in the electrical compartment and then the 50 amp cord plugged into the device? Then the compartment can be locked with the device tucked away inside?

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Old 06-30-2011, 09:01 AM   #28
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Quote:
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Gary Et Al,

To prevent a mysterious disappearance of a portable surge protector, can the surge protector be plugged directly into the RV in the electrical compartment and then the 50 amp cord plugged into the device? Then the compartment can be locked with the device tucked away inside?

Faith
You can buy a version of the surge protector designed to be hard wired and mounted in your electrical bay. This is what we did and it's out of sight and out of mind.

Rick
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