Question on Circuit Panel: Scamp 13 - Fiberglass RV


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Old 09-24-2014, 05:13 AM   #1
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Question on Circuit Panel: Scamp 13

I have a question about something I noticed the other day while out getting my winterizing done. I have a 2012 Scamp 13. I plugged the trailer in so I could use my pump to move the antifreeze (I have one of those adapters that you plug trailer power cord into and other end is 110). Usually (I thought) you had to turn main breaker to "ON" position to get lights inside the Scamp to work. I always turn the lights on after plugging in at home, just to make sure electrical power is working before I start using pump. Just a habit I guess.

Well, I plugged trailer in, and forgot to turn main breaker on to ON position. Turned on my lights in the Scamp as normal, and they turned ON. Doesn't the main breaker have to be to the ON position for the lights to go on? OR...Does the converter automatically convert the 110 electrical power to 12V, with the main breaker only needing to be switched to ON for things like furnace and fridge?

Just clarifying...guess I didn't realize this before, or maybe something is amiss. Thanking in advance for any instruction you may be able to provide.

Sincerely,
Wendy
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Old 09-24-2014, 06:38 AM   #2
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Any time that I am plugged into 110v "shore" power, my converter is supplying 12v and my battery is being charged. The way that I know that 110v is working is by plugging a small LED night light into one of the 110v outlets in the trailer. If the night light comes on, then 110v "shore" power is working.
Ray


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Old 09-24-2014, 06:59 AM   #3
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All of the 12 volt appliances and lights can run off of the battery. It doesn't know if the main breaker is on or off.
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Old 10-04-2014, 12:08 PM   #4
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Yeah but my battery was off the trailer then and in my basement being trickle charged.


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Old 10-04-2014, 12:29 PM   #5
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Hmmmm... Your converter should not work when the main breaker is OFF. That indicates that the ac input to the converter is not being protected by the main breaker as it should be.

Later Scamps have a Progressive Dynamics power center. If so, the first breaker should be the main, the second one the converter and any others are for outlets and air conditioners etc.

If that's not the case you should find out why the converter isn't protected by the main breaker, as well as it's own breaker(s).
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Old 10-04-2014, 01:21 PM   #6
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Sounds like it depends on how your converter is fed. Do you have a PD all-in-one? I would think the converter is fed through a breaker but maybe not, maybe some other internal arrangement has been made. This is one of the reasons I kind of like the wiring arrangement in my old Scamp. The 120V and 12V systems are completely separate. The converter is just plugged into a 120V outlet like anything else, actually the same one as the refrigerator. Good luck.
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Old 10-04-2014, 01:30 PM   #7
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Hi. Thanks for writing. This is all I know. I have a 2012 scamp with a PD converter near the rear trailer wall. That runs to a breaker panel with 110 breakers and 12V ATC fuses. Maybe the breaker only needs to be on for stuff like the fridge and furnace, and 12V lighting will auto come in irregardless?


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Old 10-04-2014, 02:36 PM   #8
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If a Progressive Dynamics Power Cenetr is wired according to the factory instructions, the converter/charger section will have it's own breaker. It's not pre-wired and the installer has to provide the needed breakers for a/c loads.

Of course, to save a few minutes and $$$ someone could have connected the Converter/Charger wire directly to the hot (bottom) side of the main breaker, not knowing that the shore power back-feeds through the first breaker to the AC buss.
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Old 10-04-2014, 03:59 PM   #9
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Yep, it sounds like it's wired incorrectly, possibly from the factory. Contact Scamp and tell them the situation, they may be willing to get it corrected, otherwise you need to have an electrician look at the connections. It probably needs 1 circuit breaker added and 1 wire moved, less than 1 hour labor and $20 in parts.

If you didn't get the original PD installation instructions with the trailer they are available on-line.

When the main breaker is OFF, everything AC powered, including the converter/charger, is supposed to be OFF.
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Old 10-06-2014, 08:46 PM   #10
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I'm posting this so you can all have a good laugh and if course at me. Have a hearty one!

I've owned my scamp for a year and always thought the lower most breaker that says on and off was the main. Looks like a house main breaker...DUH.

Never thought the main could be the top number one breaker as it looks like all the others except for the one on the bottom which looks different and is marked on and off. NO. That breaker is for AC if you have it and the outside outlet.

Listen all works fine and shuts off normally and I'm dumber than a box if rocks and laughing at my own self!

You have my permission to give me a good smack! Ha ha! Live and learn, it's all new to me and all good.

Thanking you my patient friends for your help,

Wendy and vulnerable!


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Old 10-07-2014, 07:11 AM   #11
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Its' all good, I would be worried about you if you were not learning! And thanks for posting, it may help others in a similar situation. I have found that many times in a circumstance such as this one needs to step back from the aggravation and look at it later with a cool head. When I do, I often see obvious things I previously missed.
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Old 10-07-2014, 07:23 PM   #12
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That's for sure! Thanks for the support!

Happy tonight as my electrician came over and we put a new 110 outlet in the scamp on the sofa side. Sure will make life easier for me as I sleep on the sofa and kids on the double bed (they're 19 and 22). I can plug things in on my side without cords draped all over the stove, etc.

Now I have two outlets. Woo hoo!


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Old 07-06-2015, 10:08 AM   #13
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Bob, I have just bought a U-haul 13. Wiring has been cut/ Is there a schematic available or is the schematic the same as Burro/scamp/Casita or something else?
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Old 07-06-2015, 10:38 AM   #14
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Since the converter may have its own internal 120 VAC overcurrent protection and the feed wire to the converter is less than 10 feet long (NEC 10 ft tap rule ) , you may be able to legally connect the converter feed wire to the line side of the 30 amp main breaker .
Not best practice but legal . If the instructions (UL listing) of the converter require a 15 amp branch circuit over current device ,then you need to follow the converter's instuction sheet
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