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

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 recommendation
solar 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.

The installation instructions for my Sharp panels I had a few years ago said minimum 5 degrees for rain drain. Warned about puddles on the panel making for "hot spots" (ISTR that was the term) and damage to cells.

EDIT Read up some on that. Hot spots caused by shading with uneven heating. "Self-cleaning" by rainfall to clear off dust--most say at least 10 degrees. Panels have drain holes that should be kept clear.

My Canadian Solar brand panel installation guide does not mention tilting for rain like my old Sharp one did.

I have nearly flat panels on the Class C roof, and have seen how rain puddles make for dirty areas after they dry if the panels are dusty before it rains. That might lead to shading related hot spots if not washed. I clean my panels fairly often anyway.

Me, I finally ran out of real-estate. Will never again climb on roof to tilt. Possible fall due to age. Hate taking those "Smart Pills".

For decades I have filled the connector with blue silicone form-a-gasket before putting the wire in, crimp with a good tool, wipe off excess. Some of the light wiring I have done have lasted over a million miles..

crcr wrote:
I am putting five 100 watt panels on the roof, non-tilting mounts.

Any chance you could be talked into tilt mounts?

I am concerned that if one puts a non-conductive substance into a crimp, that it might hinder connectivity.