We had exactly this scenario at Dankoff Solar, to back up all the computer
loads in the business. The building was 120/208, and the two SW inverters would
sync to their respective phases, 120 degrees apart. The fun part was watching
them on a scope when you shut off grid power -- they would dri
You could use a 120:120volt, with both the first and second inverters using the
same phase, but the xfmr secondary used to supply 120 volts out of phase from
the primary for the slave. Voila, auto-transformer 120:240 split phase power.
Downsides are the heavy loading all on one phase and neutral
Hello wrenches,
What constitutes a separately derived system? Would you consider a breaker
tied enphase system a separately-derived system? Suddenly, inspectors in
our AHJ are considering all PV systems separately derived systems and thus
requiring applying GEC sizing (as opposed to EGC sizing)
Hi gang. Please comment on this topic directly to me, rather than the list.
If you have any questions or comments about changing or adding to what is
appropriate for the list, it is best to send them directly to me rather than
the list. This helps keep the posts on-topic that do go out to the se
Jason,
We do a few systems each year, and I think it would add to the discussions,
probably not enough traffic to support it's own list.
Carl
SunRock Solar
On Wed, Nov 28, 2012 at 8:32 PM, Jason Szumlanski wrote:
> I was wondering how many people on the list do solar pool heating and if
> it w
We install all kinds of solar thermal systems and LOVE dem solar pool heaters.
Thanks for asking!
Andrew Koyaanisqatsi
President
Solar Energy Solutions, Inc.
Since 1987,
Moving Portland and Beyond
to an Environmentally Sustainable Future.
503-238-4502
http://www.solarenergyoregon.com/
Hi Jason
As a non voting member. :-)
I support the idea.
Jay
Peltz power
Sent from my iPad
On Nov 28, 2012, at 5:32 PM, Jason Szumlanski wrote:
> I was wondering how many people on the list do solar pool heating and if it
> would be appropriate to post occasional topics of interest. It's
I was wondering how many people on the list do solar pool heating and if it
would be appropriate to post occasional topics of interest. It's quite
distant from what we normally discuss, so maybe it's not the right place.
Thoughts?
Jason Szumlanski
___
L
Use a 208 - 240/120 transformer.
Use 3 x sunny islands
On Wed, Nov 28, 2012 at 2:06 PM, Christopher Warfel <
cwar...@entech-engineering.com> wrote:
> We were asked to replace two failed Trace SW4048 inverters with two
> Outback GT3048 inverters. Upon start up the slave inverter would not
> conne
Chris,
We had a problem similar to this in the Bahamas, only with a Radian
instead of an
FX series inverter. We used an Acme transformer, 3 ph 208 on one side,
single phase 120/240 on the other end. It was about $1200 for the
transformer. Acme is in Tennessee I believe and we worked with one of
Peter,
I use a variable 20 amp, 1-30 volt power supply with CC or CV for such
situations. You can learn a lot by charging individual cells. Plus you can
raise the voltage up much higher (2.8VPC) without harm as long as you monitor
temperature. Above 125°, stop charging or reduce voltage.
If y
I didn't want to originally load you guys down with minutiae, but we have been
having problems keeping the battery bank fully charged. We would put it on the
charger and after a while it settled down to about 17A, which is about 3.1-3.3%
of the rated capacity. The total series voltage was 57.9 V
There are twenty-four of them in one big steel box. Flooded cells. - Peter
-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jay Peltz
Sent: Tuesday, November 27, 2012 4:48 PM
To: RE-wrenches
Subject: Re: [RE
Point well taken David -- but the system has to be portable by jeep+small
trailer, small boat, floatplane, or helicopter sling load.
DAN FINK
On Wed, Nov 28, 2012 at 11:41 AM, David Katz wrote:
> Dan
> The array puts out about 15% when it is raining. You might do better to
> put in an array th
Chris:
I am surprised that the SW inverters connected to this service. They may
not have been synced properly. Was there a ribbon cable between the two
inverters? Maybe this is why they failed...
Are there 240 VAC loads in the system? If not, you can configure the
inverters in parallel t
Dan
The array puts out about 15% when it is raining. You might do better to put in
an array that is 8 times as big as you need so you will have enough power
during bad weather. It would cost you $5k and never need fuel.
David Katz
Sent from my HTC smartphone on the Now Network from Sprint!
-
We were asked to replace two failed Trace SW4048 inverters with two
Outback GT3048 inverters. Upon start up the slave inverter would not
connect. We did not realize that the building service is 208, 3 phase.
The bypass is 120/240 which the SW4048s could connect to without a
problem. Outback sa
Peter,
To your first question: fully recharging any lead acid battery as soon as
possible will give you longer cycle life. Waiting to charge and/or deep
discharges lead to shorter life. If you have the proper 3-stage charger, leave
it on the battery until you needed to use the forklift.
100% S
Right-O on the IBE website. Good
batteries but little guidance and support.
But they're not IBEs. "Enersys" on the top suggests that they are
HUPs; we installed a set of these yesterday, and it also had
Enersys on the caps. Also top quality, and by far a m
Its been a decade plus since we had a similar issue. I don't know
what is on the market now. We changed a small Honda (3.5 kW) over to
propane with a kit from U.S. Carburetion, I believe. The unit had a
remote start. On another job around that time I took a remote start
apart and hooked the
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