Run both 120 & 12v electrical - Page 2 - Fiberglass RV

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Old 07-31-2013, 01:56 PM   #15
Senior Member
Name: Steve
Trailer: Scamp 13
Posts: 1,035
Your trailer sounds like my 13 foot scamp when I got it. There was no connection between the 2 electrical systems. 120 volt went to one breaker then to 2 outlets one inside and one behind the frige and one line to the floresent light. Then the DC side went from the battery to one fuse and that line went to the frige, and 2 lights in the overhead cabinet over the stove. There was no distribution pannel, bank of fuses nor a charging system. That was all that Scamp put in. I installed a new electrical distrubution system. Progressive Dynamics PD4045 This enabled me to do up grades and power my 12 volt DC with a 120 volt feed and properly charge my battery. It doesnt allow me to power my 120 volt system from 12 volts but to do that you different equipment. This is just one vendor it is available from many places.

PD4045 45 Amp Inteli-Power Mighty Mini Power Center

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Old 07-31-2013, 02:02 PM   #16
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Name: Jim
Trailer: 13' Scamp
Posts: 9
Originally Posted by Bob Miller View Post
Why not just change out the existing 120 VAC light fixtures out for 12VDC LEDs. It's not very efficient use of your battery when you have to use an inverter just to turn on a light.
This is exactly what I'm doing.

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Old 07-31-2013, 02:15 PM   #17
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Name: Carol
Trailer: 22' Airstream Formerly 16' Scamp
British Columbia
Posts: 11,706
Originally Posted by jimkill View Post
Thanks for the replies and sorry for the confusion. I had no idea how the scamp system was supposed to work, I didn't even know that shore charged the battery. My question stemmed from the fact that my trailer has some lights that only work on shore and some that only work on battery. What I'm going to do is make everything run off 12v battery and have the shore power just charge the battery when hooked up. Then I'll get a small DC to AC inverter so that I can have an outlet just in case. That will do everything I want to do.
Well what you are proposing with everything running off the 12 volt and using shore power for charging the battery is pretty well how Scamp has wired them at least since the 80's - with the exception of the 110 receptacles and the one long fluorescent light in the kitchen -everything else runs off 12V - the fridge if 3 way will have an option for going either way.
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Old 07-31-2013, 02:33 PM   #18
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Name: Jim
Trailer: 13' Scamp
Posts: 9
My Scamp's a '74, I'm swapping the florescent tube to an led strip.

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