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Old 06-21-2014, 08:10 AM   #1
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Cheater Box

CW has on sale a Y adapter (2 30amp male plugs connected to 1 50 amp female plug) Catalog item #71205.

I'm looking for confirmation that this Y adapter is the same product as the cheater box sold by Progressive Industries.

My need for this adapter is to be able to run both ACs when only a 30 amp & a 20 amp outlet is provided at an RV Park.

Any input or opinion is appreciated!
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Old 06-21-2014, 08:43 AM   #2
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I have one of the 30 A and 20 A adapters and it did not work the first time I tried to use it. Perhaps this is because the receptacles in the box were not wired correctly.
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Old 06-21-2014, 09:02 AM   #3
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Quote:
Originally Posted by RVluvin View Post
CW has on sale a Y adapter (2 30amp male plugs connected to 1 50 amp female plug) Catalog item #71205.

I'm looking for confirmation that this Y adapter is the same product as the cheater box sold by Progressive Industries.

My need for this adapter is to be able to run both ACs when only a 30 amp & a 20 amp outlet is provided at an RV Park.

Any input or opinion is appreciated!
I have looked into the same solution and it does not appear to be an easy fix. I made an adapter as described above yet it will only work if the 20 amp receptacle is NOT the ground fault type, which is only what I have seen in both public state and private rv park electrical boxes. If the 20 amp is a GFI receptacle, any such adapter will always cause it to trip as soon as the adapter is plugged in.

The only way I have learned this can be done is be to run a separate 20 amp power line from the pedestal to a new, additional manual or automatic power transfer switch installed inside your coach that would isolate and power only one of your two air conditioners in similar fashion to how the generator automatic transfer switch operates. This "fix" essentially would be adding an additional shore power cord dedicated to ONE of the coach's air conditioners.
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Old 06-21-2014, 03:44 PM   #4
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These Y adapters are not much help. At best you would get 30 amps on one leg and 20 on the other. It's iffy to get a A/C unit to start on a 20 amp circuit without tripping the breaker.
Adding 30 and 20 do not get you 50 amp service. A true 50 amp service is 50 amps on L1 and 50 amps on L2.
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Old 06-21-2014, 04:15 PM   #5
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Quote:
Originally Posted by RVluvin View Post
CW has on sale a Y adapter (2 30amp male plugs connected to 1 50 amp female plug) Catalog item #71205.
I'm looking for confirmation that this Y adapter is the same product as the cheater box sold by Progressive Industries.
My need for this adapter is to be able to run both ACs when only a 30 amp & a 20 amp outlet is provided at an RV Park.
Any input or opinion is appreciated!

RVluvin
Those cheater boxes only work if neither of the receptacles they are plugged into have GFCI protection....(which you will not often find in campground pedestals)....every 20A campground receptacle I've seen is a GFCI receptacle.
(Even if it did work you most likely could not run 2 roof airs on a 30A and a 20A).
I've carried a cheater box in my coach for 14 years and I've never been able to use it.
BTW, I did verify that it works by connecting it to 2 non-GFCI receptacles, (via 2 extension cords), at my home.
However, the 2 receptacles must be on opposite legs of a 240VAC electrcal panel or you gain nothing)
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Old 06-21-2014, 06:10 PM   #6
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We use ours in several Georgia State parks where the pedestals have 2, 30 amp plugs and it works great. When we tried to use a 30 and 20, the GFCI would trip on the 20.
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Old 06-22-2014, 04:53 AM   #7
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I have the "Y" adapter and use it at family and in-laws houses. It works great, and I can use both AC's with it.

It will not work at most RV Parks because of the GFCI circuit.
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Old 06-24-2014, 12:07 PM   #8
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Thanks everyone for your inputs. I've decided against this product, I'm certain it won't work as I was hoping. Thanks again!
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