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 > Question about 50amp Cheater boxes

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wa8yxm

Wherever I happen to park

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Posted: 07/08/08 04:00pm Link  |  Quote  |  Print  |  Notify Moderator

This will not work, I know the ad with the box says it will but it will not work

Others have mentioned the GFCI.. I've tested it, It will not work, GFCI is why

Now, it will work if you can plug into two 30amp outlets, but since there is one 30 amp outlet per site that means your neighbor will not be able to get power. And thus the Management may (Should) invite you to vacate and no refund.

So it will not work

What will work is http://www.psrv.net Or it's equal (I made my own)

This unit comes with instructions for install on a rig with 30 amp power and 2 A/Cs.. So you have to modify the directions a bit (I can tell you how) but the device works very well indeed, no GFCI issues that I've ever seen and I used it all last year


Nothin adds excitment like something that is none of your business
John is Near Kenwood TS-2000 housed in a 2005 Damon Intruder 377


smkettner

Vladivostok, Russia (temp)

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Posted: 07/08/08 04:08pm Link  |  Quote  |  Print  |  Notify Moderator

Just plug in and turn stuff on. When power goes off then it was too much. Watch voltage on both sides especially on the 15 amp side. If you don't know what side is what just turn off one of the main breakers at the panel and look for power to measure.

stevelv

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Posted: 07/08/08 05:48pm Link  |  Quote  |  Print  |  Notify Moderator

wa8yxm wrote:

This will not work, I know the ad with the box says it will but it will not work

Others have mentioned the GFCI.. I've tested it, It will not work, GFCI is why

Now, it will work if you can plug into two 30amp outlets, but since there is one 30 amp outlet per site that means your neighbor will not be able to get power. And thus the Management may (Should) invite you to vacate and no refund.

So it will not work

What will work is http://www.psrv.net Or it's equal (I made my own)

This unit comes with instructions for install on a rig with 30 amp power and 2 A/Cs.. So you have to modify the directions a bit (I can tell you how) but the device works very well indeed, no GFCI issues that I've ever seen and I used it all last year


What is it with everyone today - I just explained that my campsite consists of 2 original sites converted into one pull through.

So there is one pedastal that has TWO outlets, intended for 2 campsites that are now occupied by ONE RV - so how can that affect my neighbor?


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ShapeShifter

Buffalo, NY

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Posted: 07/08/08 05:53pm Link  |  Quote  |  Print  |  Notify Moderator

stevelv wrote:

It's what I expected but just needed it confirmed. Looking at the box I see it actually has 2 30amp circuits (one had a 15amp adaptor on it) and the pedastal has 2 30amp outlets and so I can use 30 + 30 which should work fine - I just need to do a polarity check on the other 30amp.

I assume that there is no problems if the second 30amp is on a different phase??

It sounds like you understand what's going on. You should be in good shape if the two 30 amp plugs are on different legs. (Please don't call them phases, as that has a differnt meaning and can set off some of the electrical terminology purists! )

Since you made the comment, I'm sure you understand, but I will state it explictly just to be safe: if the two 30 amp sockets are on the same leg, then the current flowing through the common neutral conductor of your breaker box and shore power cord will be the sum of the current in the two legs. That means you could feed up to 60 amps through the neutral conductor, and it's probably not rated for it. This could be a safety concern.

But if the two sockets are on opposite legs, then the neutral current is the difference between the two leg currents, and the most you have have in the neutral conductor is 30 amps, which should be safe.

The key to all of this is that it is a very non-standard way to hook things up, and there are many issues to consider, and many reasons it might not work. You have to be very careful to understand what is going on, and what it can all mean for safety before proceeding. I applaud you for going to that level of effort. Yours is the first case I've seen where this adapter seems to make sense. Normally it doesn't buy you much relative to the risks (some of which are stated by wa8yxm.)


2007 Holiday Rambler Endeavor 40PDQ
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wa8yxm

Wherever I happen to park

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Posted: 07/08/08 06:04pm Link  |  Quote  |  Print  |  Notify Moderator

stevelv wrote:



What is it with everyone today - I just explained that my campsite consists of 2 original sites converted into one pull through.

So there is one pedastal that has TWO outlets, intended for 2 campsites that are now occupied by ONE RV - so how can that affect my neighbor?


Sorry, I call up messages a few at a time, then work through them, ON this one I got called away and there was a long delay before I replied so I missed that.

However. I still recommend the PSRV.Net product over the cheater boxes

Yours makes TWO CG's where you likely won't get tossed out for using one. and one of those is only part time. How many CG's have you parked in where they woudl object to use of such a device? Compute the odds.

CA Traveler

Sun Lakes, AZ

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Posted: 07/08/08 06:49pm Link  |  Quote  |  Print  |  Notify Moderator

Plug it in and leave the 15A CB off. Note what works in the rig. Now reverse the CBs and everything else should work. Now knowing what is on each leg you may find it better to switch the two cables. But you will have to manage the loads and it won't work if either circuit is a GFCI.


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Bob


CA Traveler

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Posted: 07/08/08 06:52pm Link  |  Quote  |  Print  |  Notify Moderator

If both ACs are on the same circuit then you can only run one of them. In addition a 17A AC draw may not allow it to run on the 15A CB. I'd monitor the voltages and check for hot plugs.

JaBob

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Posted: 07/08/08 06:52pm Link  |  Quote  |  Print  |  Notify Moderator

We use a Power Solutions device which acts the same as a Cheater Box. Have had the unit for 9 months, traveled from Georgia to Arizona and never ran into a situation where it would not work.

Bob

stevelv

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Posted: 07/08/08 07:09pm Link  |  Quote  |  Print  |  Notify Moderator

ShapeShifter wrote:

Since you made the comment, I'm sure you understand, but I will state it explictly just to be safe: if the two 30 amp sockets are on the same leg, then the current flowing through the common neutral conductor of your breaker box and shore power cord will be the sum of the current in the two legs. That means you could feed up to 60 amps through the neutral conductor, and it's probably not rated for it. This could be a safety concern.


OK, just to double check - I have my voltmeter and so how do I check that the two outlets are on seperate legs?

There are 6 poles - 3 on each outlet - so I can measure the voltage between each of those poles. Which 2 poles will confirm same or different legs?

Thanks

CA Traveler

Sun Lakes, AZ

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Posted: 07/08/08 07:28pm Link  |  Quote  |  Print  |  Notify Moderator

stevely,

You don't have a problem with overloading the common neutral since you're only connected for 45A. If you connected with 2 30A plugs then it's possible.

Measure between the 2 hot leads on the 2 plugs, 0V same leg and 240V different legs. You can look up which blade is hot or measure from ground to each of the other 2 blades on a plug. The one with 120V is the hot lead.

Use all safety precautions when doing this considering the pedestal boxes are grounded and there is frequently moisture on the ground.

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