testing the charger/converter? - Page 2 - Fiberglass RV


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Old 10-23-2013, 02:12 PM   #15
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Originally Posted by Byron Kinnaman View Post

As far as what drawing current. Two things come to mind one, your meter or your reading of the meter could be off a bit and the current draw is closer to 0.02 amps rather than 0.2 amps. The other is if you have a propane detector installed, which is supposed to be installed so that it can NOT be turned off.
Yup. The other thing that occurred to me was if you have a refrigerator with electronic controls (most over 2 ft^3 do) you will have a parasitic draw of 200-500 mA. Raz
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Old 10-23-2013, 03:27 PM   #16
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Yup. The other thing that occurred to me was if you have a refrigerator with electronic controls (most over 2 ft^3 do) you will have a parasitic draw of 200-500 mA. Raz
Ya, I keep forgetting about those fridges with electronic controls. Mine doesn't have that battery eating feature.
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Old 10-23-2013, 04:56 PM   #17
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Ya, I keep forgetting about those fridges with electronic controls. Mine doesn't have that battery eating feature.
Neither does mine. We must be anti-technology
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Old 10-23-2013, 11:41 PM   #18
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That's the inside of the American converter. Where would the voltage adjustment pot be? I don't see anything obvious.

BTW, the voltage between the big horizontal yellow and white wires is 13.2 when the circuit breaker (the left one of the pair on the right) is on, zero when I turn the breaker off. Also, the red and black wires leading down to the cover on the floor go to a small LED that seems to be burned out or not working - I've never seen it come on, and I didn't even know it was there.

Anyway, the big question now is to track the line that goes back to the battery and measure the voltage there.
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Old 10-24-2013, 08:39 AM   #19
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Sorry Chuck, not a clue on the American (brand) I was thinking of the other American (made) converter, from another thread.

But, if you have 13.2 VDC at the converter, you will have less at the battery.

We had to chuck the American (brand) converter in our Scamp as soon as smoke started coming out of it the first time we connected to shore power after bringing it home.
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Old 10-24-2013, 09:27 AM   #20
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No worries, Bob. My point was really that I'm not very inclined to stick my screwdriver into an energized circuit board , especially one that combines 120VAC and 12VDC in an inaccessible place, all wire-nutted, cable-tied, cable wrapped, electrical-taped, in-line fused, fastened down and thoroughly hidden behind various and sundry permanent structures. Sorry, <Rant Mode OFF>

Thanks for everybody's comments!

c
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Old 10-24-2013, 10:05 AM   #21
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Chuck if you look at the Scamp wiring diagram in the Documents center that should help you assuming no one has messed around to much with the wiring. At the point where the wiring comes into the trailer may be a good places to check the voltage. Thats inside the trailer & the wiring is hidden under the rat fur is where you will find most of the connections to the outside. On mine thats inside the passenger side front bench hatch - on the front wall of the trailer. Scamp btw in case your unaware does have two inline fuses on their wiring - one just off the battery and the buried under the rat fur where the wiring enters the trailer. You may need to cut the rat fur to get it pulled back enough to see all the connections. While you have it all exposed you may also want to redo some of the connections and heat shrink wrap them as I noted that on my trailer some of the connections where pretty shaky. Another place to check may be at the point your wiring harness connects to the trailer - which depending on the age of your trailer or what others have done in the past in regards to changing wiring harnesses may or may not be inside the bench in the trailer - that may be outside and all wrapped up with a cover or tape.
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Old 10-24-2013, 10:47 AM   #22
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I have the Scamp 16 and AFAICT mine just has a bundle of wire nuts in the floor inside of that storage location. A somewhat large bundle of wires. It looks like a lot of it is handling the 7 pin plug coming from the TV.
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Old 10-24-2013, 11:05 AM   #23
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I have the Scamp 16 and AFAICT mine just has a bundle of wire nuts in the floor inside of that storage location. A somewhat large bundle of wires. It looks like a lot of it is handling the 7 pin plug coming from the TV.
It would be nice to think that Scamp may have improved their wiring/connection practices in that area or perhaps the PO of your trailer did a big clean up. that area is also were you will most probable find a well hidden inline fuse -often wrapped up with electrical tape making it hard to see on the line. If you have a power issue on the trailer that would be a starting point to look for the cause if all other obvious causes fail to give you joy.
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Old 10-24-2013, 11:12 AM   #24
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beardrum, They make special insulated screwdrivers for making the adjustments while energized.
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