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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Great ideas on load management to save the DC/AC system sizing.
I haven’t spent time researching their need for this 3hp pump or age and all,
but definitely worth looking at that side. Since it does pump to the 3000g
gravity feed tank up the hill. What’s strange is there is still a bladder tank
in the garage, possibly decommissioned when they added the gravity system.<o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:navy'>Sincerely,<br>
<br>
Chris Worcester<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:navy'>Solar Wind Works<br>
NABCEP Certified PV Installer<br>
Phone: 530-582-4503<br>
Fax: 530-582-4603<br>
<a href="http://www.solarwindworks.com/"><u>www.solarwindworks.com</u></a><br>
<a href="mailto:chris@solarwindworks.com"><u>chris@solarwindworks.com</u></a><br>
"Proven Energy Solutions"</span><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:windowtext'>From:</span></b><span style='font-size:10.0pt;font-family:
"Tahoma","sans-serif";color:windowtext'> re-wrenches-bounces@lists.re-wrenches.org
[mailto:re-wrenches-bounces@lists.re-wrenches.org] <b>On Behalf Of </b>Allan
Sindelar<br>
<b>Sent:</b> Tuesday, June 15, 2010 8:48 PM<br>
<b>To:</b> jryago@netscape.com; RE-wrenches<br>
<b>Subject:</b> Re: [RE-wrenches] two VFX3524's and a Franklin 3hp sub pump<o:p></o:p></span></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'>Chris,<br>
We deal with deep wells routinely.<br>
<br>
Recently we installed a GTWB system for a very enjoyable retired couple. Their
needs included the goat milker, sheep barn, two freezers and a fridge, and
irrigation well pump, with the system sized for continuous operation in the
event of a long-term (i.e. permanent) loss of the grid. This was on one acre in
the suburbs south of Albuquerque. We used an XW4548, as it was the only
battery-based, 120/240, single-inverter, grid-tie unit available currently.<br>
<br>
As part of the normal load-reduction process, we determined that the 2hp
conventional well pump could be replaced with a 1hp soft-start SQ and have
adequate head and flow for their sprinklers. Changing out the pump way more
than paid for itself in the amount of inverter capacity we didn't need. <br>
<br>
I would encourage you to look at both of these related issues carefully as part
of this situation: could a smaller pump meet the head and flow requirements of
this site, and is a soft-start pump available? Usually, if an inverter or stack
of them can't handle a big inductive load like a conventional pump, it's
because of the starting surge. I suspect a smaller soft-start pump may be
doable in your situation.<br>
Allan<o:p></o:p></p>
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<p class=MsoNormal><span class=il><b>Allan</b></span><b> Sindelar</b><span
style='font-size:10.0pt'><br>
<a href="mailto:Allan@positiveenergysolar.com" target="_blank"><span class=il><u>Allan</u></span><u>@positiveenergysolar.com</u></a><br>
NABCEP Certified Photovoltaic Installer<br>
EE98J Journeyman Electrician<br>
<b>Positive Energy, Inc.</b><br>
3201 Calle Marie<br>
Santa Fe, New Mexico 87507<br>
<b>505 424-1112</b><br>
<a href="http://www.positiveenergysolar.com/" target="_blank"><u>www.positiveenergysolar.com</u></a></span><o:p></o:p></p>
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<p class=MsoNormal>Hello offgrid Wrenches,<o:p></o:p></p>
<p class=MsoNormal>I just inherited an off grid system with one VFX3524
inverter running the home loads, and a 17kW Guardian Generac they use for
charging (through an X-240 back into the inverter) & to run their Franklin
3hp 240 VAC well pump, S. F. max amp 17.0 ( rated on its controller)<o:p></o:p></p>
<p class=MsoNormal>This is a really convoluted system as they have another
120/240 VAC Transformer to have the inverter talk to the 240 volt signal the gen
set needs to see. Yikes.<o:p></o:p></p>
<p class=MsoNormal>So I am proposing to add a second inverter if it can run the
well pump and eliminate the extra transformer. This will also reduce gen set
run time in half while battery charging, a big plus with the nice 24V Hawker
battery bank, 1020 AH at the 6 hour rate.<o:p></o:p></p>
<p class=MsoNormal>There aren’t any other unusual large AC loads in the home,
just the fridge, washer, computer, and such. LPG for cooking, water heating,
clothes dryer. <o:p></o:p></p>
<p class=MsoNormal>Thanks in advance for all ideas here!<o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:navy'>Sincerely,<br>
<br>
Chris Worcester</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:navy'>Solar Wind Works<br>
NABCEP Certified PV Installer<br>
Phone: 530-582-4503<br>
Fax: 530-582-4603<br>
<a href="http://www.solarwindworks.com/"><u>www.solarwindworks.com</u></a><br>
<a href="mailto:chris@solarwindworks.com"><u>chris@solarwindworks.com</u></a><br>
"Proven Energy Solutions"</span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
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