Moxi wrote: ↑Sun May 15, 2022 3:22 pm
Hi Smegal,
now that you’ve had a few weeks to get used to your system how is it behaving, are you more or less comfortable with the flex of the system ?
Moxi
Thank you for the question.
Well...
Since my posts, I asked three Structural Engineers at work. One during a call about something else, but he isn't the most pragmatic, so I asked another. Then while at the coffee machine at work, another asked me about my installation (there must have been some internal discussions). When I showed the third my photo's his responsor was "$h*t mate, that's a bit slender"
After speaking to the first two people I'd ordered the mounting gear to roof mount. That was a drama in itself. I opted for renusol mountings as they had an online designer that accounts for wind speed etc. Unfortunately, there seems to be a UK wide shortage of renusol mountings, I got really lucky and got the bits that I needed, but it took a LOT of searching, and buying components from a couple of suppliers.
Last Wednesday, my scaffold tower was delivered. On Friday, I installed the hooks, quite proud of myself, prior to that the only roofing I'd ever done was replacing one tile. On Saturday, the installation was moved and the unistrut demolished.
The installation is definitely compromised compared to the South Facing. I suspect the graph flatlining at 100W is indicative of significant shading.
On Friday, I also received a replacement for one of the walked on panels as there was some minor damage. I have to say I am happy with the supplier, and would happily recommend them.
If the supplier doesn't ask for the damaged one back (I don't expect them to if I'm honest, it'd cost more in shipping than the panel is worth), I am considering adding this to the install in portrait mode and installing tigo optimisers. I will also get some renusol right angled brackets and drop the install down a rail height. I currently have rails running across, then vertical rails mounted on to the horizontal rails. It makes the install sit higher than I'd like, but it was what came out of the calculator.
Hooks going in
Hooks up
Panels on
Looking down at the garden
The installation went reasonably well, with the only real headache being me trying to work out how to get the cable into the garage, I ended up adding deeper and wider notches round a hook and then bringing the cables through a lap in the roofing felt.
I am a little embarrassed about the change of direction, but It's all Learning From Experience. I'm grateful for all of the comments and advice I've received so far. It's been a steep learning curve.