<html>
<head>
<meta http-equiv=Content-Type content="text/html; charset=iso-8859-1">
<meta name=Generator content="Microsoft Word 11 (filtered)">
<style>
<!--
/* Font Definitions */
@font-face
{font-family:Wingdings;
panose-1:5 0 0 0 0 0 0 0 0 0;}
@font-face
{font-family:"Arial Narrow";
panose-1:2 11 5 6 2 2 2 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman";}
h1
{margin-top:12.0pt;
margin-right:0in;
margin-bottom:3.0pt;
margin-left:0in;
page-break-after:avoid;
font-size:16.0pt;
font-family:Arial;
font-weight:bold;}
h3
{margin-top:6.0pt;
margin-right:0in;
margin-bottom:0in;
margin-left:0in;
margin-bottom:.0001pt;
page-break-after:avoid;
font-size:12.0pt;
font-family:Arial;
letter-spacing:-.5pt;
font-weight:normal;}
a:link, span.MsoHyperlink
{color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{color:blue;
text-decoration:underline;}
p
{margin-right:0in;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman";}
p.alist, li.alist, div.alist
{margin-top:0in;
margin-right:0in;
margin-bottom:0in;
margin-left:.5in;
margin-bottom:.0001pt;
text-indent:-.15in;
font-size:12.0pt;
font-family:"Times New Roman";}
p.ahead3, li.ahead3, div.ahead3
{margin-top:6.0pt;
margin-right:0in;
margin-bottom:0in;
margin-left:0in;
margin-bottom:.0001pt;
page-break-after:avoid;
font-size:12.0pt;
font-family:Arial;
letter-spacing:-.5pt;}
p.StyleaparaJustifiedAfter0pt, li.StyleaparaJustifiedAfter0pt, div.StyleaparaJustifiedAfter0pt
{margin:0in;
margin-bottom:.0001pt;
text-align:justify;
font-size:12.0pt;
font-family:"Arial Narrow";}
p.alistnead, li.alistnead, div.alistnead
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:Arial;}
p.anumlist, li.anumlist, div.anumlist
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman";}
p.aHead1, li.aHead1, div.aHead1
{margin-top:0in;
margin-right:0in;
margin-bottom:6.0pt;
margin-left:0in;
text-align:center;
page-break-after:avoid;
font-size:16.0pt;
font-family:Arial;
font-weight:bold;}
p.StyleHeading3Left0Firstline0, li.StyleHeading3Left0Firstline0, div.StyleHeading3Left0Firstline0
{margin-top:6.0pt;
margin-right:0in;
margin-bottom:0in;
margin-left:0in;
margin-bottom:.0001pt;
page-break-after:avoid;
font-size:12.0pt;
font-family:Arial;
letter-spacing:-.5pt;}
p.a-text, li.a-text, div.a-text
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman";}
p.apara, li.apara, div.apara
{margin:0in;
margin-bottom:.0001pt;
text-indent:.35in;
font-size:12.0pt;
font-family:"Times New Roman";}
p.StyleHeading1Centered, li.StyleHeading1Centered, div.StyleHeading1Centered
{margin-top:0in;
margin-right:0in;
margin-bottom:6.0pt;
margin-left:.5in;
text-align:center;
page-break-after:avoid;
font-size:16.0pt;
font-family:Arial;
font-weight:bold;}
p.Styleapara1TimesNewRomanFirstline025, li.Styleapara1TimesNewRomanFirstline025, div.Styleapara1TimesNewRomanFirstline025
{margin:0in;
margin-bottom:.0001pt;
text-align:justify;
text-indent:.25in;
font-size:12.0pt;
font-family:"Times New Roman";
letter-spacing:-.25pt;}
p.PPAhead, li.PPAhead, div.PPAhead
{margin:0in;
margin-bottom:.0001pt;
font-size:16.0pt;
font-family:Arial;}
p.aparabullet, li.aparabullet, div.aparabullet
{margin-top:0in;
margin-right:0in;
margin-bottom:0in;
margin-left:.5in;
margin-bottom:.0001pt;
text-align:justify;
text-indent:-.25in;
font-size:12.0pt;
font-family:"Times New Roman";
letter-spacing:-.25pt;}
p.AAbulllist1, li.AAbulllist1, div.AAbulllist1
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman";}
p.AAbulllist2, li.AAbulllist2, div.AAbulllist2
{margin-top:0in;
margin-right:0in;
margin-bottom:0in;
margin-left:1.0in;
margin-bottom:.0001pt;
text-indent:-.25in;
font-size:12.0pt;
font-family:"Times New Roman";}
p.Equation, li.Equation, div.Equation
{margin-top:0in;
margin-right:0in;
margin-bottom:6.0pt;
margin-left:0in;
text-align:center;
font-size:12.0pt;
font-family:"Times New Roman";}
span.EmailStyle33
{color:black;}
@page Section1
{size:8.5in 11.0in;
margin:1.0in 1.25in 1.0in 1.25in;}
div.Section1
{page:Section1;}
/* List Definitions */
ol
{margin-bottom:0in;}
ul
{margin-bottom:0in;}
-->
</style>
</head>
<body bgcolor=white lang=EN-US link=blue vlink=blue>
<div class=Section1>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>Hello Holt: </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>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>First make sure you estimate your time and
materials and get paid 100% for the work you do. In other words don’t
count on any follow on work. Then,</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>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>(a) Figure out where the inverter is going
to go. Plan for the inverter, disco, production meter, subpanel (if any).</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>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>(b) Stub out a ¾” (or 1”)
nipple at the appropriate point on the wall, put a pull box in the wall space.</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>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>(c) From the pull box, run either metal
flex (empty flexible metal conduit) or MC cable (prewired cable) to the attic
and the point of roof penetration.</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>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>(d) Penetrate the roof and put another
pull box and nipple (or appropriate length of rigid conduit) at this point; and
of course do a good job of flashing in the penetration.</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>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>(e) If you used MC cable, strip enough of
the clad off to leave ample wire at both ends for what you want to do there.</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>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>(f) Mark the cable/conduit run with peel
and stick labels that say “Solar” or “Danger Solar” or “Danger
Solar 600 Vdc). I am pretty generous with these labels, using them every 10’
on long runs in the attic and every 6’ in walls.</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>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>(g) You will also need to provide a means
of disconnection on the roof before penetration. You can use a DC-rated disconnect
(my choice) but I have heard that “touch-safe” fuses or circuit
breakers serve as adequate means of disconnection. Does anyone else know
something definitive? If you use a disco, you should NOT need to provide over-current
protection if you size you wire according to code and have a letter from the
inverter manufacturer stating that the inverter cannot back-feed the PV array. </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>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>Personally, I like MC cable, as it comes
pre-wired with 2 current carrying conductors plus a ground (e.g. MC10-2, for
AWG-10) or 4 current carrying conductors plus a ground (e.g. MC10-4 for AWG-10).
Since it is pre-wired, the resulting diameters are impressively small. There
are special connectors for MC. There seems to be a distinction between MC being
cable and MF being a raceway, and possibly MC cable not being allowed by the
AHJ. I get pre-approval for MC before I start from the planning department, use
the protection plates wherever an errant nail or sheet rock screw could do
damage, and use lots of labels. Inspectors are usually impressed with these pre-cautions
and I have never had a problem.</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>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>Oh, two other things. When I do use MF, I
like to pre-wire it using a long level space (like a driveway). It a whole lot
easier to pull the wire than after it is in place. I guess that there is a
limit to the number of bends one can make in MF before putting in a pull box (it’s
conduit after all). </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>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>Good luck.</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>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>- Peter</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, Ph.D., President<br>
California Solar Engineering, Inc.<br>
820 Cynthia Ave., Los Angeles, CA 90065<br>
Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885<br>
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>
</div>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabindex=-1>
</span></font></div>
<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>holtek@sbcglobal.net<br>
<b><span style='font-weight:bold'>Sent:</span></b> Saturday, February 07, 2009
7:35 AM<br>
<b><span style='font-weight:bold'>To:</span></b> RE-wrenches<br>
<b><span style='font-weight:bold'>Subject:</span></b> [RE-wrenches] Solar Ready
remodel</span></font></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
<div>
<p class=MsoNormal><font size=3 face=Calibri><span style='font-size:12.0pt;
font-family:Calibri'>Wrenches,</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face=Calibri><span style='font-size:12.0pt;
font-family:Calibri'>I am working with a client that is doing major remodeling
on a recently purchased house. His budget is not allowing PV at this time, but
he is very serious about adding it when he sells other property. I am suggesting
that we make the house "solar ready" for such a time. I'm thinking to
run oversized conduit to dedicated solar equipment room making
wire runs easier when that time comes around. It is unclear as to the size of
system budget will allow at future date (roof will accomodate approx. 9kw). Are
there any further steps that are suggested while the walls are open
to make a future install as economical as possible? </span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Holt E. Kelly<br>
Holtek Fireplace & Solar Products<br>
500 Jewell Dr.<br>
Waco TX. 76712<br>
254-751-9111<br>
<a href="http://www.holteksolar.com">www.holteksolar.com</a></span></font></p>
</div>
</div>
</body>
</html>