Tuesday, April 20, 2010

Lofty Goals

I know I know, sometimes those titles are kinda lame. But I tire of the boring old "Just the facts ma'm."

So I put the loft flooring in... well... sheesh... I guess it's been a month now. It's hard to believe it's been that long. Christy and I are really pleased with it. What a difference an extra inch makes. The flooring is 2x6 tongue and groove yellow pine. It  feels so substantial and solid compared to the plywood. No more having to worry if we''ll break through the floor.

















Last week I started work on our ground-mount PV system. I began by digging 6 3-4' deep holes for the piers to support the system. Afterwards I placed 8" and 12" Quik-tubes for the front and rear piers, respectively. Given the tilt of the array, the rear piers needed to be dug deeper and be more substantial (there's that word, again), hence the different diameters. Certainly I could have used 12" all around but that meant more concrete. I then set 1.5" schedule 40 steel pipe in the piers. Then it was basically building a jungle gym - at least it felt that way. I kept wanting to climb it - an urge I eventually gave in to.

I ended up having to use three different types of framing system in order to make things work with the module orientation (portrait). If I had gone with a landscape configuration I could've done without the intermediary framing system (Unistrut) and gone exclusively with SnapNrack. The latter being what the panels are mounted to. See here for clarification on the difference between PV module, panels, and array.

The only things I'm missing are: wiring, AC disconnect, junction box, and microinverter installation hardware. I should have all those things in by early next week. Conservatively speaking, I should be done by the 1st. That'll give me two weeks to get the system inspected in time to meet the state deadline to qualify for the RE credit.


Second PV Installation

I recently had the opportunity to help out with another PV installation with neighbor and friend David Zachow. This installation was for a previous customer of David's who was doing an upgrade. We installed an additional 1.7kW to an existing 3kW system. It was a fairly easy installation given the low pitch of the roof and previous work done. Overlooking the surrounding verdant country side didn't hurt either.The owners treated David and I to dinner afterwards and tons of produce from their garden.