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Electrical Discussion of preventative/corrective maintenance and other technical issues regarding your coach's electrical system.

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  #1  
Old 09-18-2009
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Default 30 AMPS not Enough???

Heres a little goodie I got at the local RV store today. Made by Camco RV. 1-30 amp male,+ 1-15 amp male merged into a 50 amp female that gives you 45 amps from a power station with no 50 amp outlet. Quick and easy.


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  #2  
Old 09-18-2009
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Very interesting Kurt. How much was it?
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Old 09-18-2009
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Kurt it sounds good but? If you plug both male plugs into the receptacles on the same pedestal then you are going to be trying to pull 50A thru a 30A wire. In other words you are still going to be limited to 30A from your pedestal. If you connect the second male plug into another pedestal then you may get 50A, but probably an angry neighbor.
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Old 09-18-2009
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50 amps does not come into play - there is nothing in the coach that "knows" whether you are plugged into 15, 30, or 50.

With a single 30-amp dogleg (or 30-to-50 cord), 30 amps is shared by the two legs within the coach.

With the cable shown above, 30 amps is fed to one leg, and 15 amps is fed to the other. Whether you can do that from a single pedestal cannot be determined - it depends entirely on what the power source to the pedestal is. If, for example, the source is 50 amps (and it often is), the expectation is that you can pull both 30 and 15 (or 20) at the same time.

Then the only issue is which leg has the big power draw in the coach itself.

If there is only 30 amps total at the pedestal (rare) then of course you will blow a main breaker somewhere else when you pull more than 30 total.
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  #5  
Old 09-18-2009
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The Camco website doesn't do much for specifics about this device, so I was happy to find this page which has a Camco engineer agreeing with me:
http://www.greatrvstuff.com/2008/11/...maximizer.html

For prices:
http://www.google.com/products?q=camco+power+maximizer
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Old 09-18-2009
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Hi Guys,

Rob, I paid $51.95 plus tax. It was cheaper than piecing one together myself. I did make a 50 amp splitter that lets you plug in 2-30 amp cords into a 50 amp outlet. 25 amps to each plug. So I thought this baby was a deal. I see on Dons thread they can be had for a bit less.

In my experience most older parks and the facilities that I frequent. Have a pole with 1-30 amp and one or two 15 amp outlets. Of course your limited to the power available to the coach by whatever the post is wired up for. The adapter has one leg with 30 amp wiring and the second with 15 amp sized wiring. So I would keep to the standard scenario.

With a little bit of attention paid to what is running off of which power source will be needed. If I can in the morning I'll plug her in to see which leg is on the 30 and which is on the 15. I know in my coach 2 of the 3 a/c units are on the same leg, hopefully it wont be the 15 amp leg.

Anyways it's better than straight 30 amps. It lets you be a bit more flexible to different campgrounds.
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Old 09-18-2009
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Thank you Kurt
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Old 09-18-2009
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Keep in mind a 50 amp outlet is in reality two 50 amp legs for a total available output of 100 amps at 120 volts AC. The most power that could be safely obtained by this adapter cord as stated earlier by Don is 30 amps on one leg and 15 amps on the other. Though probably of some help, ya couldn't run much off of the 15 amp service. BTW, we were at a "campground" once that had a whopping 10 amps of service per site!! Wow!!!
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  #9  
Old 09-19-2009
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I've long had a "cheater cord" that allows plugging into two 30 amp outlets or a 30 and a 20/15 with the proper adaptor.

The reality is, that power pedestals are all GFI protected and the unbalanced neutral of a cheater cord will, inevitably, trip the GFI breaker. So, there are few instances where you'll be able to effectively use the cord.

Interesting thing, though.
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  #10  
Old 09-19-2009
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I had one of those splitters, from Camping World. It also had a sticker which advised "do not plug into 15A GFI outlet". Many parks have a 15A GFI outlet next ot the 50 & 30. Sure enough, it would trip the GFI outlet. I was only able to use it a couple of times and eventually dumped it. One leg with 15A doesn't do much for a power hog BB.

My best splitter, in the attached photo, is two 30A to one 50A female. It's great if the park has double service boxes and you can plug into two separate 30A outlets.
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