William,
Eric's specs include "50VAC..." - that has a specific relevance.
The old Hearts used a different search structure, in that the AC
output measures around 50 VAC in search mode. If you're
troubleshooting and don't know this, you'll think there's
somet
Chris,
You could try System Advisor Model (SAM) from NREL for free:
https://sam.nrel.gov/
Cheers,
-Nathan
--
Nathan J. Stumpff
NABCEP Certified PV Installation Professional #091209-175
NABCEP Certified Solar Heating Installer #032412-14
Project Manager | Arctic Sun, LLC
nat...@arcticsun-llc.com
Really good on those nights when Curling is not on
ESPN..
On 12/6/2013 8:25 PM, Dave Click wrote:
Dear Wrenches,
Several of your co-wrenches are helping Mike Holt with the video
companion to his PV & the NEC 2014 book. So since you spend all your
weekdays thinking about th
Dear wrenches:
We are bidding a job for a thrifty fellow; it's a small commercial system
(7.2KW array), and he's interested on the figures relating to his return on
investment. Does anyone have any link or software where we can crunch the
numbers and get him an idea of his real ROI? Besides t
Brian, We often have customers that don't want to loose programming for their
satellite receiver. To reduce tare loss and the parasitic drain on a large
inverter, we install a 100 Watt dedicated inverter, about $20, to keep the sat
receiver going 24/7. We do the same thing for small refrigerator
William,
The flat screen and the satellite receiver are both phantom loads when off, so
either make sure that they are on a plug strip and switched off when not in
use, or you will have to increase the battery charging source (PV?). The
satellite unit may lose its programming when switched off
Bill,
You would do us all a great service if you would explain why, "The roof-mounted
requirement was a complete mistake--and
potentially dangerous in most cases." To the trained eye, as Doug Wells points
out, a rooftop PV array looks like one enormous air terminal. You guys are
agreeing it makes
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