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MrWizard's avatar
MrWizard
Moderator
Sep 25, 2010

More Solar for "Us"

Ok, I went off.the deep end?
Bought 3 used 37watt uni-solar panels and a blue sky 2000e controller for the hefty price of $400,
They were being listed as 75w panels, they are not

The tested open circuit voltage was 21+, short circuit amps 2.9
I tested each panel multiple times tilted into the sun and laying flat on the ground , got the same readings each way, that was the deciding factor, they appear to put out full power while laying flat, I will try to mount them tomorrow before it gets hot, right now 104°F
I will use the existing wiring until I buy & install the new wire

715 Replies

  • For tree branch protection, perhaps you can use something like chicken wire fencing over them supported by a light wooden frame of some sort? Or a better version of that. Not much shading would happen with that anyway.

    Our Dometic air conditioner shroud has no back wire grate covering, so the fins of the a/c were getting bent with tree branches. (you need a "fin comb" to fix them I am told) I saw some trailers with the same shroud but with an extra wire grating to protect the fins so I got some of that at Home Depot and snipped to size and added that to the back of the shroud.

    So I am wondering if the same idea could be applied to your solar panels.
  • Yes they will be mounted on the MH roof
    The blue sky controller looks like it's built to be bullet proof and at 25amps plenty large capacity so I can add more panels in the future,
    These are extremely light maybe 10# or so apiece, NO glass sheild, there is some kind of thin plastic? Covering that has a few scratches, Ive got to be careful about tree branches

    The model-type # is US-37T
  • RoyB's avatar
    RoyB
    Explorer II
    Maybe 75W was all the previous owner could muster most of the time...

    Let us know how it works laying flat. I guess you are going to mount these on top of the trailer ???

    I want to do the same thing sometime soon. I just want to trickle charge my battery bank during the daylight hours...

    Im thinking you did good...
  • Mr Wizard you didn't get burned. You'll end up with 5 to 6 amps of usable charge rate while the sun shines.
  • I asked about the 2000e on here last winter and was told it is still considered a "modern" controller with a good rep.