Re: [RE-wrenches] Metal roof w/o standing seams.

2011-05-04 Thread jay peltz
Hi Jesse, I like the EJOT, works well. However check to see where the ribs are in relation to the trusses. In my experience the rib is always right over or in the way getting to the truss. In which case its back to blocking or similar so you can mount on the flat sections. jay peltz power O

[RE-wrenches] Metal roof w/o standing seams.

2011-05-04 Thread Jesse Dahl
Wrenches, I will be installing system on a metal roof this summer and I am looking for some advice. The roof is metal with 2x4 wood trusses. There is no standing seam to attach to, so I am looking at a Ejot type attachment system. The modules are Silicon-energy cascade series. Any tips or a

Re: [RE-wrenches] Side-by-side microinverter, maximizer, and conventional inverter comparisons

2011-05-04 Thread Jesse Dahl
Hello, Right now I am in the process of monitoring an array and individual modules with the Solmetric PV analyzer. I am also testing this array with and without optimizers. Duplicating conditions for the tests can be difficult, but I can share my IV cure traces and electrical readings when I'm

[RE-wrenches] Side-by-side microinverter, maximizer, and conventional inverter comparisons

2011-05-04 Thread Joel Davidson
Wrenches, A few years ago, we compared conventional and MPPT charge controllers and found power production improvement in only in unique conditions and rarely over 15%. Now Microinverter and DC maximizer companies are claiming "as much as 25%" increased electricity production and a booming mar

[RE-wrenches] Fwd: Berkeley Lab Study Finds that Solar Photovoltaic Systems Boost the Sales Price of California Homes

2011-05-04 Thread Dave Click
All, just noticed that this email hadn't gone through to the wrench list. Good follow-up to our March discussion (subject line: Value of PV system to a home). Original Message Subject: Berkeley Lab Study Finds that Solar Photovoltaic Systems Boost the Sales Price of Californ