Looking for comments on the Apollo T80HV charge controller.
We require a MPPT controller that will accept up to 3 Sanyo 215N's in series
(194Voc / 157Vmp with 1.25 factor). To my knowledge this is the only
controller that will do the job. This HV Apollo is publishing it's Max Voc
at 200 and Max o
(another reason to leave the ground rod sticking out of the ground a
few inches)
I had an inspector require me to drive the rod flush. His concern
was that it was a hazard. A child playing, or anyone for that
matter, who fell face down on it could be severely injured. Other
problems a
Interesting. Has anybody tried this off grid, and compared the results to the
old (3 point) ground testers?
That would make my life easier, for sure. I'll try it next time I'm on an off
grid system, and report back to the list.
R. Walters
r...@solarray.com
Solar Engineer
On Apr 18, 2010, at
A couple of nice things about working on carports:
1) often the ceiling is exposed, making anchoring and finding rafters easy
2) If you did have a leak, its not quite as catastrophic.
Just because you get the wind loading and anchors right for the array, doesn't
mean the carport roof will still b
Hi
It can be used off grid, but you have to have two ground sources, so drive two
ground rods and measure the resistance you will get the sum of the two
resistsnces.
--- On Sun, 4/18/10, R Ray Walters wrote:
> From: R Ray Walters
> Subject: Re: [RE-wrenches] clamp on ground impedance tester
I bought the Amprobe DGC-1000A. I paid around $1000, but I see they've gone up
a bit already. I can't necessarily recommend (or berate) the web biz I bought
it from, so I'm not going to give them a plug.
I'd just google: the make & model #.
The Amprobe is very easy to use, but the 2 down sides ar
Allan,
According to Unirac tech, the code manual only addresses solid wall structures.
He was also the one who told me about the greater windloads on open structures.
His suggestion was to get an engineer involved, but on a system this size I am
hoping to avoid that additional cost. I did fill o
Enphase has a tech note pdf for download that recommends and rationalizes a PV
watts derate of .819 instead of the standard .77 (which IMO is a little
conservative to begin with).
http://www.enphaseenergy.com/downloads/EnphaseAppNote_PVWatts.pdf
Kirk Herander
Vermont Solar Enginee
Holt,
Feedback re the low tilt angle: Go for it, you're good.
Re wind loading: check out UniRac's Code Compliant Installation Manual,
http://www.unirac.com/pdf/ii227.pdf, especially pages 3-9.
Less wind loading is one of the main reasons for going with a lower
tilt angle. Another is closer mo
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