Showing posts with label grid-tie. Show all posts
Showing posts with label grid-tie. Show all posts

Sunday, January 18, 2009

My solar power hits a snag -- the electrical inspector!

Well my solar power setup looked all ready to go until the electrical inspector inspected the system. Mary Ness, of the Washington State Dept. of Labor and Industries, cited two complaints, one was arguable either way, the second I found confusing. Apparently Dave Cozine has worked with inspectors that allowed photographs in lieu of climbing the roof  to inspect connections. Mary does not, and wanted the panels removed so she could inspect the Enphase quick-disconnects. I think we've resolved this issue, but we'll see Monday when the inspector comes again.

The lesson I take away from this is have your installer call the inspector before the install begins and ask what they want to see. Dave, who has a spotless record and excellent references, has worked with 47 different inspectors with few snags. But there are no standards between inspectors. There probably should be, but L&I hasn't set any in place.

Tuesday, January 6, 2009

Sanyo solar modules arrive!

The photo-voltaic (solar) power system is now sitting in my garage! Hopefully, when the weather breaks on Thursday, Dave Cozine and crew can get them installed. Here's a photo of the modules.

[caption id="attachment_82" align="alignnone" width="300" caption="Sanyo 200 watt modules arrive"]Sanyo 200 watt modules arrive[/caption]

For each of the 10 modules (200 watt x 10 = 2,000 watts) there is an Enphase grid-tie inverter. Unlike most systems where there is a single, central inverter, the Enphase converts 32vdc to 240vac at the solar panel. If you lose an inverter you only lose the output from one module. Here's a photo.

[caption id="attachment_81" align="alignnone" width="300" caption="Photograph of Enphase grid-tie power inverter "]Photograph of Enphase grid-tie power inverter [/caption]

Thursday, November 6, 2008

PV (Photo-Voltaic) System install -- roof completed

Well the old roof is history and the new roof is installed -- clearing the way for solar modules. Jeremy and Sean, of Puget Sound Solar, came by to do the site assessment. They cranked out a report with their site assessment tool (a Compaq handheld hooked to a fish-eye lens). Dave Cosine from Brothers Electric came by later to look things over. Both have sent estimates as of 11/05/2008. Looks like 2kw will run us around $17k. Worth it if the solar array slows Global Climate change!

The next step is getting approval from the Homeowner's Association. Stay tuned.