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<div class=Section1>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>My point continues to be, the facts. If
you have a good understanding, how about sharing it with us all so that collectively
we can sit clients down and show them the consequences of what they are asking
for, wean them away from the nutty, and perhaps lock onto a reasonable
compromise. Time of use is important but if they can’t kick off the motor
in question, then it’s a moot issue, right? I guess that my first
instinct is to educate, and I usually find that there is a subtle but important
difference between “telling a client they’re wrong” and “helping
them discover the right answer”. </span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'> </span></font></p>
<div>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>Peter T. Parrish, CA Lic. 854779, NABCEP Cert. 031806-26<br>
peter.parrish@calsolareng.com</span></font><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue'> </span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
re-wrenches-bounces@lists.re-wrenches.org
[mailto:re-wrenches-bounces@lists.re-wrenches.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Jeff Yago<br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, August 20, 2008
7:50 PM<br>
<b><span style='font-weight:bold'>To:</span></b> RE-wrenches<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [RE-wrenches] offgrid
system question</span></font></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
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font-family:Arial'> </span></font></p>
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<p><font size=3 color=black face="Times New Roman"><span style='font-size:12.0pt;
color:black'>As the two of you stride away from this issue with
self-congratulatory back slaps and dismissive comments about nutty clients, you
might also find time to arm yourself with a modicum of facts about current
surges in motors and surge response of inverters. - </span></font></p>
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</div>
<p><font size=3 color=black face="Times New Roman"><span style='font-size:12.0pt;
color:black'>Peter Parrish</span></font> </p>
<p><font size=3 color=black face="Times New Roman"><span style='font-size:12.0pt;
color:black'> - - - - - - - - - - - - - - - - - - - </span></font></p>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>Peter, </span></font></p>
<p><font size=3 color=black face="Times New Roman"><span style='font-size:12.0pt;
color:black'>As I tried to explain, I am well aware of surge loads from motor
driven equipment, but this is not relavent to this problem. My point
was we had 20 emails trying to resolve ways to make something work by minor
tweaking things when someone should have told this client - this ain't gonna
work with your under-sized system no matter what you do. I assure
you that powering a swamp cooler fan is nothing like the power drain from
a 3-1/2 ton air conditioning compressor and 1/2 HP supply fan running
12 hours each day. I have engineered the air conditioning
systems, chillers, pumps, and air handling units for entire hospitals, research
laboratories, university buildings, and hundreds of homes and I believe I have
a good understanding of the power requirements for a simple split AC unit
as well as the effects of surge loads on the inverter and battery.</span></font>
</p>
<p><font size=3 color=black face="Times New Roman"><span style='font-size:12.0pt;
color:black'>I would rather loose a job that I know is wrong, than have it
hang around my neck from now on. There are plenty of good
solar projects and clients out there who are willing to pay for a system that
is properly sized and designed. Sometimes you just have to tell clients
they don't have the budget for what they are trying to do and no amount of
tweeking will make an under-sized 2 kW solar array power
a 5 kW compressor load for very long even if you install 10 inverters to
handle the surge load. </span></font></p>
<p><font size=3 color=black face="Times New Roman"><span style='font-size:12.0pt;
color:black'>Please excuse me now, I have to go slap myself on my back.</span></font>
</p>
<p><font size=3 color=black face="Times New Roman"><span style='font-size:12.0pt;
color:black'>Jeff Yago</span></font> </p>
<p><font size=3 color=black face="Times New Roman"><span style='font-size:12.0pt;
color:black'>Licensed Professional Engineer</span></font> </p>
<p><font size=3 color=black face="Times New Roman"><span style='font-size:12.0pt;
color:black'>NABCEP Certified</span></font> </p>
<p><font size=3 color=black face="Times New Roman"><span style='font-size:12.0pt;
color:black'>Licensed Electrician</span></font> </p>
<p><font size=3 color=black face="Times New Roman"><span style='font-size:12.0pt;
color:black'>Certified Energy Manager</span></font> </p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><br>
</span></font></p>
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<hr size=2 width="100%" align=center>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Netscape. Just the Net You Need.</span></font></p>
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