I'm in the middle of installing a solar system, and have a couple of questions:Heavy Duty Tinned Copper Lugs crimped onto Copper stranded wire -- Use any anti-corrosive or conductive grease type material in the joint before crimping it? Or better to use nothing? FYI, I do use a high quality adhesive-based clear shrink wrap on crimped joints.I am putting five 100 watt panels on the roof, non-tilting mounts. My question is, what is the recommended slight angle to mount solar panels for the purpose of rain run-off?Thanks in advance for any recommendations!

I have seen something somewhere recently not to use any goop in there like that, but can't pin it down at the moment. Was in one of the owner's manuals for something, not to use any of that red spray stuff you use on battery posts. Might not be the same as what you are asking about.5 degrees to get run off, but the roof may already be at that with camber.

BFL13 wrote:I have seen something somewhere recently not to use any goop in there like that, but can't pin it down at the moment. Was in one of the owner's manuals for something, not to use any of that red spray stuff you use on battery posts. Might not be the same as what you are asking about.5 degrees to get run off, but the roof may already be at that with camber.Thanks. Yeah, I think I read something recently somewhere also recommending to put nothing. I used to put Ox-Gard on such connections, but now I am questioning the wisdom of that.My roof is very close to flat, though must be rounded ever so slightly to each side. I was thinking for the two panels nearest the front of the TT, to tilt them down slightly toward the front due to forward motion when traveling, but I suppose any such angle like 5 degrees or so is so slight that it probably doesn't matter which direction they are tilted in.

Does the solar panel manufacturer suggest any tilt for rain?

solar panel MFG don't need a rain run off recommendationsolar panel MFG always recommend 90 degrees to the azimuth of the sun ( rain run off recommendation Not needed )that is way more than the 5 degrees recommended here

Crimp clean and dry. You can do an empirical test to see what angle sheds enough water.

Solar: Add Anything to Copper Crimps & Tilt Angle for Panels

crcr
Explorer
Dec 16, 2019
BFL13 wrote:
I have seen something somewhere recently not to use any goop in there like that, but can't pin it down at the moment. Was in one of the owner's manuals for something, not to use any of that red spray stuff you use on battery posts. Might not be the same as what you are asking about.

5 degrees to get run off, but the roof may already be at that with camber.

Thanks. Yeah, I think I read something recently somewhere also recommending to put nothing. I used to put Ox-Gard on such connections, but now I am questioning the wisdom of that.

My roof is very close to flat, though must be rounded ever so slightly to each side. I was thinking for the two panels nearest the front of the TT, to tilt them down slightly toward the front due to forward motion when traveling, but I suppose any such angle like 5 degrees or so is so slight that it probably doesn't matter which direction they are tilted in.
BFL13
Explorer II
Dec 16, 2019
I have seen something somewhere recently not to use any goop in there like that, but can't pin it down at the moment. Was in one of the owner's manuals for something, not to use any of that red spray stuff you use on battery posts. Might not be the same as what you are asking about.

5 degrees to get run off, but the roof may already be at that with camber.

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Solar: Add Anything to Copper Crimps & Tilt Angle for Panels

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