Solar Panel L Brackets
Saw THESE on ebay. I'm going to get two 150W panels from Solarblvd. Should I wait till I get the panels or will these do? Thanks. Panel http://www.solarblvd.com/Solar-Panels-&-Systems-12-Volt-Sol...
Forum Discussion
Almot wrote:
I haven't heard of a mix of EPDM and TPO, it's usually one or another. but who knows, maybe...
The membrane material will determine the choice of a sealant, and you do need a sealant under the bracket foot, no matter if it's a well nut or deck screw. Almost any sealant is compatible with EPDM. TPO - don't know.
Well nut Vs deck screw(s): with well nut you HAVE to miss the rafter. With deck screw you don't have to hit it, it will just be stronger if you do. I hit the rafters with deck screws on some brackets, and didn't on others, but with 5 screws per 6"x4" bracket foot it should stay put even without rafter. I think 3*#10 deck screws per bracket is the very minimum, if you expect any winds or if brackets are higher than 2".
I decided against well nuts not because it needs 1/2" hole - my 5 #10 screws is a lot of a hole too - but because I wanted stainless hardware, and because I don't believe in rubber lasting more than a few years in Mexican heat.
To justify 45A controller you will need at least 600W array, IMO.
He is starting with 300 W, having the 40 or 45 amp controller allows him, if wired oversize from the start, add a one or two more 150w panels if need be. Seems to me, he's engineering it to be up scalable in the future, depending on needs?
Mena has been reading these threads for quite a while now, probably has a very good understanding exactly of what his needs are, and will probably achieve exactly what he's aiming for. One can tell by the types of questions he's asking... pretty well thought out, IMHO, before spending and proceeding.
