On Aug 15, 2009, at 6:49 PM, jay peltz wrote:
I don't have a photo, but have seen a pole mount, in the ground, run up the side of the building, supported by the building by a bracket, which can mount a tracking or non tracking pole mount.
jay
We've done mounts like this before, when the roof was too sketchy to mount to, or an off grid system with a roof not facing close enough to south. It works pretty well: no penetrations or loading on the roof, still allows one bolt tilt adjust, azimuth to due south regardless of building orientation, etc. We normally would sit the pole in concrete, and then attach it with unistrut to the wall in a couple of spots. The unistrut would be long enough to catch 2 or 3 wall studs, and then attach to the pipe with a 6" unistrut clamp. As better roof mounting products have become available, we have been moving away from this method. Also, Grid tie just isn't near as critical for panel orientation, where as a small off-grid system in the winter really needs to be tilted to at least 30 deg, and within 20 deg of south to work right. Funny teaching us old off gridders to quit tilting, etc. with grid tie. Bill Brooks had some humorous examples of off grid sensibility applied in very ugly fashion to grid tie systems. At some point, I think NABCEP should consider separate certifications, as Off grid and grid tie have such different design requirements.
Ray Walters _______________________________________________ List sponsored by Home Power magazine List Address: [email protected] Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
