Trailer Electrical System Design - Page 3 - Fiberglass RV


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Old 10-20-2013, 06:20 PM   #29
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Trailer: 1984 19' scamp
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Originally Posted by mrscottyg View Post
Unless the unit in my trailer is unique (which is unlikely), the PD-4045 pulls air in the front and discharges it out front. The back of the cabinet is solid plastic on top, bottom, and both sides, except where wires pass through. You can feel the warm air exiting the cabinet in the front when the unit is charging at full load.
Mine is vented front and back, blows out the front.
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Old 10-20-2013, 06:23 PM   #30
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A question re how much venting is actually needed for the PD. My converter is located in a large rear hatch on the Scamp. No outside vents to that hatch. Only small openings into other inside areas of the trailer where the water and electrical runs through. Would I or should I need to add a larger vent somewhere on the rear bench hatch to the inside of the trailer to give it more ventilation or as the old converter was fine in that location would the new PD be fine there as is as well?
I would add one. I cut a hole and put mesh on the bottom of the cabinet where the toe kick is, but I put mine under the sink, because my water tanks didn't leave room for it under the rear benches.
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Old 10-20-2013, 06:51 PM   #31
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Trailer: 22' Airstream Formerly 16' Scamp
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I would add one. I cut a hole and put mesh on the bottom of the cabinet where the toe kick is, but I put mine under the sink, because my water tanks didn't leave room for it under the rear benches.
Thanks Jared - but when you say "Water tanks" I am assuming you added an extra tank? Only have one in the other bench where the water pump and power cord live - so nothing in the bench that has been traditionally the converters home since it left the factory other than the converter
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Old 10-20-2013, 07:37 PM   #32
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Thanks Jared - but when you say "Water tanks" I am assuming you added an extra tank? Only have one in the other bench where the water pump and power cord live - so nothing the bench that has been traditionally the converters home since it left the factory other than the converter
Correct, I put twin 20 gallon fresh water tanks in mine, not a problem you'll have. My original breaker box was under the sink, and the converter was under the fridge on the opposite side. I wanted to put it under the bench, but it wouldn't fit with those tanks. I lengthened the dc wiring and ran all of it to the sink cabinet and put the pd4045 there. I relocated the water pump under the sink for the same reason.

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Old 10-20-2013, 08:51 PM   #33
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Thanks Jared appreciated. Not sure under the sink option works for me as I have the breaker box under there but also a hot water tank that takes up a great deal of it.
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Old 10-21-2013, 05:18 AM   #34
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Thanks Jared appreciated. Not sure under the sink option works for me as I have the breaker box under there but also a hot water tank that takes up a great deal of it.
The pd4045 replaces your breaker box. I put mine under the sink so I didn't have to extend any ac wires (except the one for the air conditioner). I have a hot water heater also, probably different than yours, though.

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Old 10-21-2013, 11:14 AM   #35
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Trailer: Scamp 13
California
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I don't think that your trailer is unique in that sense, but the 2 year old PD-4045 in my Hunter is vented both front and back, suggesting a change in the PD design. If anyone has bought one recently, please chime in as to the venting.
I bought my PD-4045 last December 2012 and its case is vented. I mounted mine under the front bunk in my Scamp 13. The previous owner cut the base of the front bunk to mount a table I made a frame and mounted in that foot well. Unit resides right where the front power cord from the battery comes in. That compartment leaks to the back of the frige so no issue with venting.
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Old 10-21-2013, 06:23 PM   #36
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Thank you all for such useful information. Very helpful.

If I install a PD4045 and decide to start using a solar panel, how does that interface with the system? Is another control panel needed for that?

Craig T.
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Old 10-21-2013, 07:36 PM   #37
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Yes, that uses a separate controller.
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Old 10-21-2013, 10:26 PM   #38
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Trailer: '07 Scamp 16' SD
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I second this book, a lot on the theory of 12 volt electrical system design, including solar.

Yes, you will need a separate charge controller for solar
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Old 10-27-2013, 07:32 PM   #39
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Thank you all for your input. This is just what I was hoping for!

Any further thoughts are welcomed.

Craig T.
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