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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<br>
<br>
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<p class="MsoNormal" style=""><span class="il"><b style="">Allan</b></span><b
style=""> Sindelar</b><span style="font-size: 10pt;"><br>
<a href="mailto:Allan@positiveenergysolar.com" target="_blank"><span
class="il">Allan</span>@positiveenergysolar.com</a><br>
NABCEP Certified Photovoltaic Installer<br>
EE98J Journeyman Electrician<br>
<b style="">Positive Energy, Inc.</b><br>
3201 Calle Marie<br>
Santa Fe, New Mexico 87507<br>
<b style="">505 424-1112</b><br>
<a href="http://www.positiveenergysolar.com/" target="_blank">www.positiveenergysolar.com</a><br>
</span></p>
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<br>
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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: 10pt; color: navy;">Sincerely,<br>
<br>
Chris Worcester<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 10pt; 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/"><span style="color: blue;">www.solarwindworks.com</span></a><br>
<a href="mailto:chris@solarwindworks.com"><span style="color: blue;">chris@solarwindworks.com</span></a><br>
"Proven Energy Solutions"</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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