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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Continuous rows of four 4’ lamp T-8 fixtures
(8’ long) on 8’-12’ centers would be the ideal lighting
system in terms of performance, efficiency, installed price and maintenance cost.
T-5’s are actually slightly less efficient and really don’t make
sense at mounting heights less then 20’. Plus T-5 lose more light
output then T-8 as temperatures decrease which starts to become noticeable at
60f and really noticeable at 50f. Most shops are kept warm unless they
are being used and on the colder days it could take hours for the T-5 lights to
get to full output.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I suggest continuous rows because that
gives the owner a very uniformly lit space and tons of flexibility when he
decides to reconfigure the shop in the future. “I can’t put
this machine over there because that’s the dark corner”. The
fewer the fixtures the worse the shadows which are a bad thing in work shops
and continuous rows are essentially shadow free. For energy purposes I
would switch every other fixture for times when not as much light is needed.
IE; 42’ long shop/8’ long fixtures = 5 fixtures per row with 1’
gap on each end of the row, 3 fixtures per row on one switch and two on the
other. I would suggest the basic commodity grade 8’ white painted
fixture that every electrical supplier stocks plenty of. Typical cost is $40-$45
each. No need for hoods (reflectors) at the heights you mention especially
if the ceiling is white. 5000k 800 series lamps are the best lamp for
this application. F32T8SPX50 would be the GE part number and your
local supplier can easily cross that with what ever brand they carry.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Best,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Travis Creswell<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Ozark Energy Services<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<div>
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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 Wongstrom/ Sarah Anderson<br>
<b><span style='font-weight:bold'>Sent:</span></b> Saturday, December 06, 2008
9:58 AM<br>
<b><span style='font-weight:bold'>To:</span></b> <st1:PersonName w:st="on">RE-wrenches</st1:PersonName><br>
<b><span style='font-weight:bold'>Subject:</span></b> [<st1:PersonName w:st="on">RE-wrenches</st1:PersonName>]
Wood shop lighting</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Hello Wrenches,<o:p></o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>We have a client with an off grid wood shop and would like your
recommendations for the most efficient lighting options. The shop is
powered by a quad stack, 4.8KW of PV and a 20KW genset. The main part of
the shop is 42'x22' with ceiling heights varying from 10-12', there are benches
along two walls, and machinery work stations at several locations. There
is good day lighting and we have stressed the importance of light colored
surfaces. We have had both T8 and T5 florescent lights with electronic
ballasts recommended. From numbers that the electrical wholesaler
provided, the watts/lumen between T5's and T8's appear to be similar.
However, the T5's are more expensive and have higher maintenance costs but may
require fewer fixtures. Is one more appropriate than the other or
are there better, more efficient, wood shop lighting options? <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Jeff<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<div><span style='orphans: 2;text-align:auto;widows: 2;-webkit-border-horizontal-spacing: 0px;
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-webkit-text-stroke-width: 0px;word-spacing:0px'>
<div>
<p class=MsoNormal><span class=apple-style-span><span style='orphans: 2;
widows: 2;-webkit-border-horizontal-spacing: 0px;-webkit-border-vertical-spacing: 0px;
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face=Sand><span style='font-size:10.0pt;font-family:Sand;color:#BB1806'><span
style='orphans: 2;widows: 2;-webkit-border-horizontal-spacing: 0px;-webkit-border-vertical-spacing: 0px;
-webkit-text-decorations-in-effect: none;-webkit-text-size-adjust: auto;
-webkit-text-stroke-width: 0px;word-spacing:0px'><span style='orphans: 2;
widows: 2;-webkit-border-horizontal-spacing: 0px;-webkit-border-vertical-spacing: 0px;
-webkit-text-decorations-in-effect: none;-webkit-text-size-adjust: auto;
-webkit-text-stroke-width: 0px;word-spacing:0px'><span style='orphans: 2;
widows: 2;-webkit-border-horizontal-spacing: 0px;-webkit-border-vertical-spacing: 0px;
-webkit-text-decorations-in-effect: none;-webkit-text-size-adjust: auto;
-webkit-text-stroke-width: 0px;word-spacing:0px'><span style='orphans: 2;
widows: 2;-webkit-border-horizontal-spacing: 0px;-webkit-border-vertical-spacing: 0px;
-webkit-text-decorations-in-effect: none;-webkit-text-size-adjust: auto;
-webkit-text-stroke-width: 0px;word-spacing:0px'><span style='orphans: 2;
widows: 2;-webkit-border-horizontal-spacing: 0px;-webkit-border-vertical-spacing: 0px;
-webkit-text-decorations-in-effect: none;-webkit-text-size-adjust: auto;
-webkit-text-stroke-width: 0px;word-spacing:0px'><span style='orphans: 2;
widows: 2;-webkit-border-horizontal-spacing: 0px;-webkit-border-vertical-spacing: 0px;
-webkit-text-decorations-in-effect: none;-webkit-text-size-adjust: auto;
-webkit-text-stroke-width: 0px;word-spacing:0px'><span style='orphans: 2;
widows: 2;-webkit-border-horizontal-spacing: 0px;-webkit-border-vertical-spacing: 0px;
-webkit-text-decorations-in-effect: none;-webkit-text-size-adjust: auto;
-webkit-text-stroke-width: 0px;word-spacing:0px'><span style='orphans: 2;
widows: 2;-webkit-border-horizontal-spacing: 0px;-webkit-border-vertical-spacing: 0px;
-webkit-text-decorations-in-effect: none;-webkit-text-size-adjust: auto;
-webkit-text-stroke-width: 0px;word-spacing:0px'><span style='orphans: 2;
widows: 2;-webkit-border-horizontal-spacing: 0px;-webkit-border-vertical-spacing: 0px;
-webkit-text-decorations-in-effect: none;-webkit-text-size-adjust: auto;
-webkit-text-stroke-width: 0px;word-spacing:0px'><span style='-webkit-border-horizontal-spacing: 0px;
-webkit-border-vertical-spacing: 0px;-webkit-text-decorations-in-effect: none;
-webkit-text-size-adjust: auto;orphans: 2;widows: 2;word-spacing:0px'><span
style='-webkit-border-horizontal-spacing: 0px;-webkit-border-vertical-spacing: 0px;
-webkit-text-decorations-in-effect: none;-webkit-text-size-adjust: auto;
orphans: 2;widows: 2;word-spacing:0px'><span style='-webkit-border-horizontal-spacing: 0px;
-webkit-border-vertical-spacing: 0px;-webkit-text-decorations-in-effect: none;
-webkit-text-size-adjust: auto;orphans: 2;widows: 2;word-spacing:0px'>Thirsty <st1:place
w:st="on">Lake</st1:place> Solar</span></font></span><font size=1 color=black
face=Helvetica><span style='font-size:9.0pt;font-family:Helvetica;color:black'><o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><st1:address w:st="on"><st1:Street w:st="on"><font size=1
color=black face=Helvetica><span style='font-size:9.0pt;font-family:Helvetica;
color:black'>PO Box</span></font></st1:Street><font size=1 color=black
face=Helvetica><span style='font-size:9.0pt;font-family:Helvetica;color:black'>
538</span></font></st1:address><font size=1 color=black face=Helvetica><span
style='font-size:9.0pt;font-family:Helvetica;color:black'><o:p></o:p></span></font></p>
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<p class=MsoNormal><st1:City w:st="on"><st1:place w:st="on"><font size=1
color=black face=Helvetica><span style='font-size:9.0pt;font-family:Helvetica;
color:black'>Eureka</span></font></st1:place></st1:City><font size=1
color=black face=Helvetica><span style='font-size:9.0pt;font-family:Helvetica;
color:black'>, MT 59917<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=1 color=black face=Helvetica><span
style='font-size:9.0pt;font-family:Helvetica;color:black'>Jeff<span
class=apple-converted-space> </span>Wongstrom<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=1 color=black face=Helvetica><span
style='font-size:8.5pt;font-family:Helvetica;color:black'>NABCEP Certified
Solar Installer<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><span class=apple-style-span><font size=1 color=black
face=Helvetica><span style='font-size:9.0pt;font-family:Helvetica;color:black'>406-889-5324</span></font></span><font
size=2 color=black face=Helvetica><span style='font-size:10.0pt;font-family:
Helvetica;color:black'><o:p></o:p></span></font></p>
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<p class=MsoNormal><span class=apple-style-span><u><font size=1 color="#0000ee"
face=Helvetica><span style='font-size:7.0pt;font-family:Helvetica;color:#0000EE'><a
href="http://www.thirstylakesolar.com/">thirstylakesolar</a>.com</span></font></u></span><font
size=1 color=black face=Helvetica><span style='font-size:9.0pt;font-family:
Helvetica;color:black'><o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=1 color=black face=Helvetica><span
style='font-size:9.0pt;font-family:Helvetica;color:black'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'></span><o:p> </o:p></span></font></p>
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</span></span></span></span></span></span></span></span></span></span></span></span></span></span>
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<P><FONT SIZE=2>No virus found in this incoming message.<BR>
Checked by AVG.<BR>
Version: 7.5.552 / Virus Database: 270.9.15 - Release Date: 12/5/2008 12:00 AM<BR>
</FONT> </P>
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<P><FONT SIZE=2>No virus found in this outgoing message.<BR>
Checked by AVG.<BR>
Version: 7.5.552 / Virus Database: 270.9.15 - Release Date: 12/5/2008 12:00 AM<BR>
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