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<p class=MsoNormal><span style='font-size:14.0pt;font-family:"Century Gothic","sans-serif"'>I
see several challenges here:<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span
style='font-size:14.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span
style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:14.0pt;font-family:"Century Gothic","sans-serif"'>You
sure do not want both pumps on at the same time or total shut down will result.<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span
style='font-size:14.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span
style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:14.0pt;font-family:"Century Gothic","sans-serif"'>The
2HP pump is 24 amps at 120VAC or 12 amps at 230 VAC, either way 2.7KW continuous
draw and start up surge at 2-4 times [5.4KW – 10.8KW]that?<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:14.0pt;font-family:"Century Gothic","sans-serif"'>This
will be more than a light dimmer.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:14.0pt;font-family:"Century Gothic","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:14.0pt;font-family:"Century Gothic","sans-serif"'>I
think the mix and match was just covered here with compromises in the assorted modules.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:14.0pt;font-family:"Century Gothic","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:14.0pt;font-family:"Century Gothic","sans-serif"'>I
s there a backup generator? Could this grinder and water pump go direct to that
on a pressure or float switch start?<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:14.0pt;font-family:"Century Gothic","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:14.0pt;font-family:"Century Gothic","sans-serif"'>If
you are a code compliant installer then you probably are faced with a start
over.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:14.0pt;font-family:"Century Gothic","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:14.0pt;font-family:"Century Gothic","sans-serif"'>I
have a client that we are doing just that right now and they are glad to do
this. The 2 – 30 watt PV modules just will not get them and 2 laptops
through the winter any more…<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:14.0pt;font-family:"Century Gothic","sans-serif"'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Century Gothic","sans-serif"'>Thanks,
Dana Orzel<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Century Gothic","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Century Gothic","sans-serif"'>Great
Solar Works, Inc<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Century Gothic","sans-serif"'>E
- dana@solarwork.com<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Century Gothic","sans-serif"'>V
- 970.626.5253<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Century Gothic","sans-serif"'>F
- 970.626.4140<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Century Gothic","sans-serif"'>C
- 970.209.4076<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Century Gothic","sans-serif"'>web
- www.solarwork.com<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Century Gothic","sans-serif"'>Responsible
Technologies for Responsible People since 1988"</span><o:p></o:p></p>
</div>
<p class=MsoNormal><span style='font-size:14.0pt;font-family:"Century Gothic","sans-serif"'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal style='margin-left:.5in'><b><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> re-wrenches-bounces@lists.re-wrenches.org
[mailto:re-wrenches-bounces@lists.re-wrenches.org] <b>On Behalf Of </b>Bob
Clark<br>
<b>Sent:</b> Sunday, May 02, 2010 2:29 PM<br>
<b>To:</b> re-wrenches@lists.re-wrenches.org<br>
<b>Subject:</b> [RE-wrenches] Heinz 57 off-grid array - What should I do with
the solar modules?<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Century Gothic","sans-serif";
letter-spacing:-.3pt'>Wrenches:<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Century Gothic","sans-serif";
letter-spacing:-.3pt'><o:p> </o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Century Gothic","sans-serif";
letter-spacing:-.3pt'>We were called to assess the status of an off-grid system
that is not the worst I have seen, but it comes close.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Century Gothic","sans-serif";
letter-spacing:-.3pt'><o:p> </o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Century Gothic","sans-serif";
letter-spacing:-.3pt'>I have some preliminary thoughts about system redesign,
but would like to hear from the Wrenches about the array.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Century Gothic","sans-serif";
letter-spacing:-.3pt'><o:p> </o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><b><span style='font-family:"Century Gothic","sans-serif";
letter-spacing:-.3pt'>Givens:<o:p></o:p></span></b></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Century Gothic","sans-serif";
letter-spacing:-.3pt'>We will not install anything unless it is to code.
It is obvious that none of the existing system was installed to code.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Century Gothic","sans-serif";
letter-spacing:-.3pt'>We will use the existing 24V battery bank consisting of
8, Trojan L16s. The batteries are still “relatively fresh.”<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Century Gothic","sans-serif";
letter-spacing:-.3pt'>Pump is a Franklin pump ½ hp 115VAC. The CFs dim
when the pump starts.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Century Gothic","sans-serif";
letter-spacing:-.3pt'>New load will be a GRINDER PUMP FOR SEPTIC = 2HP, 15amp
(240 or 120VAC – more than likely it will be 240V pump) – Another
light dimmer!<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Century Gothic","sans-serif";
letter-spacing:-.3pt'>Modest daily electrical load (estimate no more than 600
WHr/day; 25AHr) – they are <i><u>very good</u></i> at managing their
electrical use.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Century Gothic","sans-serif";
letter-spacing:-.3pt'><o:p> </o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><b><span style='font-family:"Century Gothic","sans-serif";
letter-spacing:-.3pt'>Solar array – to keep or replace?<o:p></o:p></span></b></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Century Gothic","sans-serif";
letter-spacing:-.3pt'>8 solar modules – a Heinz 57 mix of older modules -
2 Photowatt PMX500 (Are these modules UL listed? There did not appear to
be a rating label on the back.) wired in series, 2 Kyocera KC120-1 wired in
series, 2 Golden Genesis PV-75 wired in series, 2 Photowatt PW 1000 12V-24V
internally wired for 24V wired in parallel with the other modules strings
– all of these modules are wired in 5 parallel strings for approximately
34.2Vmp and 20.4Imp, ~695W (STC). Oh, and they need a new mounting
structures for the modules.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Century Gothic","sans-serif";
letter-spacing:-.3pt'><o:p> </o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Century Gothic","sans-serif";
letter-spacing:-.3pt'>Should I try to work with these modules or advise the
customer to start over (any modules that are not UL listed will have to go)?<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Century Gothic","sans-serif";
letter-spacing:-.3pt'><o:p> </o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Century Gothic","sans-serif";
letter-spacing:-.3pt'>What is a good “rule of thumb” for a ratio of
PV watts to battery bank capacity per day of autonomy?<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Century Gothic","sans-serif";
letter-spacing:-.3pt'><o:p> </o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Century Gothic","sans-serif";
letter-spacing:-.3pt'>Thanks for your ideas.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Century Gothic","sans-serif";
letter-spacing:-.3pt'><o:p> </o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><b><span style='font-family:"Papyrus","serif";
color:#E36C0A'>Bob Clark<o:p></o:p></span></b></p>
<p class=MsoNormal style='margin-left:.5in'><b><i><span style='font-family:
"Papyrus","serif";color:#E36C0A'>SolarWind Energy Systems, LLC<o:p></o:p></span></i></b></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Century Gothic","sans-serif";
letter-spacing:-.3pt'><o:p> </o:p></span></p>
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