Hear hear! We need to rout the RE industry of the charlatans that will only
serve to bring the responsible people down.
VAWTs do not employ the Bernoulli Effect - the laminar flow phenomenon that
gives all foils/wings their power. They are categorically inefficient.
There are plenty of HAWT
Unless I'm seriously missing something (and I very well may be), It looks to me like as long as the install complies with 230II, you're good. dbDan BrownFoxfire Energy Corp.Renewable Energy Systems(802)-483-2564www.Foxfire-Energy.comNABCEP #092907-44
Original Message
Subject:
Oops.. my bad.. I was looking at conductors, not conduit.Dan BrownFoxfire Energy Corp.Renewable Energy Systems(802)-483-2564www.Foxfire-Energy.comNABCEP #092907-44
Original Message
Subject: [RE-wrenches] PV in Overhead (aerial) Conduit
From: Phil Theis p...@pennsun.com
Date:
Ok, again, unless I'm missing something, 230II, and 396 compliant installs should be good to go.. dbDan BrownFoxfire Energy Corp.Renewable Energy Systems(802)-483-2564www.Foxfire-Energy.comNABCEP #092907-44
Original Message
Subject: [RE-wrenches] PV in Overhead (aerial) Conduit
Hi Kirk,
Can you fill us in on how many batteries are in each set that was ruined?
thanks,
jay
peltz power
On Oct 22, 2010, at 12:39 PM, Kirk Herander, VSE wrote:
Hello,
I have an off-grid battery / generator / SW4024 system which has destroyed
-3- sets of batteries in the last five
Daryl was right on the charge rates. What is not referenced is the
configuration of the battery bank.
Since it is a 24 volt system it could possibly have multiple series strings
paralled together. There will always be imbalances in the individual strings
resulting in higher resistance in one
Hi Nathan;
I agree that too many strings can cause problems, as you mentioned, but I've
seen 2 major problems with single battery strings, too:
1) A single cell failure, or corroded connection takes the entire system out of
commission.
2) Most batteries do not have enough current to meet the
Rebecca,
Although I recommended delaying the implementation of arc-fault detectors,
the Code Making Panel felt that the hazard justified the requirement.
Article 90.4 clarifies the NEC's approach to your concern:
90.4 (paragraph 3)
This Code may require new products,
Wrenches, Nathan, Ray;
I'm also seeing a big red flag on battery connections and possible
corrosion.
No info was provided on system battery bank voltage ( I am assuming 24v,
from the SW inverter model number), or how the battery bank is
configured as far as series vs. parallel.
With
Thanks Jamie I find your input to be most valuable, the photo shows how the
plate material has been blown off the positive grid a sure sign of
overcharging and overcharge rate
Daryl
--- On Sat, 10/23/10, James Surrette ja...@surrette.com wrote:
From: James Surrette ja...@surrette.com
Subject:
Good question and answer, I talked to several at the SPI and indeed they are
being developed (series arc fault), But universally people said they have no
standard to test to. UL has not writen the test that must be passed
Darryl
--- On Sat, 10/23/10, Bill Brooks billbroo...@yahoo.com wrote:
Jamie et al-
Bank is -8- Rolls T12-250, 12 v, 200 ahr @ 20 hr rate. So -4- series
strings in parallel, 800 ahr @ 24 vdc. So C10 charge rate of 80 amps.
SW4024 charger is 120a max, so worst case about C/6.7 rate. Of course
this rate is not at all constant, we all know. I have not yet seen
I have a client right now doing a last ditch heavy equalizing cycle to try to
save his 5 year old, 24 volt bank of 8 L-16's. One of the two series strings
has a weak cell... so the other string is boiling away. He is charging for 2
hours with 2 hours rest to not overheat the charged cells. Too
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