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<div class=Section1>
<p class=MsoNormal><span style='color:#1F497D'>There’s a subtle but important
distinction I think we’re making here within 90.1-2004:<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>9.1.3 and the glossary in
combination define “installed interior lighting power.” Reading both
appropriate passages, you can conclude this only includes “permanently
installed” fixtures. I think we can all agree cord and plug receptacles are in
general not supposed to be included in any normal LPD (W/SF) calculation (for
compliance documentation or otherwise).<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Priya and the USGBC reviewer we’re
discussing however are bringing up a separate issue, which is the passage in
Appendix G that specifically tells us to handle cord and plug task lighting in
a different manner. This is specifically in the context of baseline/proposed energy
models, and would not apply to any LPD sums made for purposes outside of energy
modeling against a 90.1 baseline. I’ve copied my response below for reference.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>~Nick<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><span style='color:#1F497D'><img width=119 height=37
id="_x0000_i1027" src="cid:image001.jpg@01CAC1F2.02A5FF00"
alt="cid:489575314@22072009-0ABB"></span><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p> </o:p></span></b></p>
<p class=MsoNormal><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'>NICK CATON, E.I.T.</span></b><b><span style='font-size:12.0pt;
font-family:"Stylus BT","sans-serif";color:#2D4D5E'><o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:7.5pt;color:#CC9900'>PROJECT ENGINEER</span><span
style='font-size:7.5pt;font-family:"Times New Roman","serif";color:#CC9900'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>25501 west
valley parkway<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>olathe ks 66061<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>direct 913
344.0036<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>fax 913
345.0617<o:p></o:p></span></p>
<p class=MsoNormal><i><span style='font-size:10.0pt;color:#2D4D5E'>Check out
our new web-site @ </span></i><span style='color:#1F497D'><a
href="www.smithboucher.com" title="blocked::www.smithboucher.com"><span
style='font-size:10.0pt'>www.smithboucher.com</span></a></span><u><span
style='font-size:10.0pt;color:blue'> </span></u><span style='color:#1F497D'><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='color:#1F497D'><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><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"'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>dlombard@earthlink.net<br>
<b>Sent:</b> Friday, March 12, 2010 11:45 AM<br>
<b>To:</b> Priya Premchandran; bldg-sim@lists.onebuilding.org<br>
<b>Cc:</b> Mark Loeffler<br>
<b>Subject:</b> Re: [Bldg-sim] ASHRAE 90.1-2004 and task lights<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:9.0pt;
font-family:"Arial","sans-serif";color:black'>It was my understanding that only
hard wired tasks lights were included in the watts/Sf calcs. <br>
You could ask "Mark Loeffler" <ml@atelierten.com>, who's AT's
Lighting Director. He'll know for sure.<br>
<br>
</span><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>___<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><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"'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Nick Caton<br>
<b>Sent:</b> Friday, March 12, 2010 11:45 AM<br>
<b>To:</b> Priya Premchandran<br>
<b>Cc:</b> BldgSim Mailing List<br>
<b>Subject:</b> Re: [Bldg-sim] ASHRAE 90.1-2004 and task lights<o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>The appropriate section happens
to be right in front of me – assuming you have task lights defined in the
construction documents (plans/specs) being reviewed, it looks to me that your
USGBC reviewer is correct, but not telling you the whole story…<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>90.1-2004, Appendix G, Table
G3.1, Section 6. “Lighting” (d):<o:p></o:p></span></p>
<p class=MsoNormal><i><span style='color:#1F497D'><o:p> </o:p></span></i></p>
<p class=MsoNormal><i><span style='color:#1F497D'>“Lighting system power shall
include all lighting system components shown or provided for on the plans
(including lamps and ballasts and task and furniture-mounted fixtures).”<o:p></o:p></span></i></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>The following exception for
multifamily dwellings and hotel/motel guest rooms makes a distinction regarding
cord + receptacle task lights:<o:p></o:p></span></p>
<p class=MsoNormal><i><span style='color:#1F497D'><o:p> </o:p></span></i></p>
<p class=MsoNormal><i><span style='color:#1F497D'>“<b>Exception:</b> For…
spaces in which lighting systems are connected via receptacles and are not
shown or provided for on building plans, assume identical lighting power for
the <u>proposed</u> and <u>baseline building designs</u> in the simulations,
but exclude these loads when calculating the <u>baseline building performance</u>
and <u>proposed building performance</u>.”<o:p></o:p></span></i></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Falling back to the glossary
definition for <u>performance</u> (cost), that means if you are modeling the
task lights, add their wattage identically to the baseline and proposed model
LPD’s to model the internal load contributions, but then subtract the cost of
the energy to operate those fixtures from the final costs you arrive at.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>In summary, you should model the
task lights as internal loads, but not the cost of operating them. That’s
my take anyway =),<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>~Nick<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><img border=0 width=119
height=37 id="Picture_x0020_1" src="cid:image001.jpg@01CAC1F2.02A5FF00"
alt="cid:489575314@22072009-0ABB"></span><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p> </o:p></span></b></p>
<p class=MsoNormal><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'>NICK CATON, E.I.T.</span></b><b><span style='font-size:12.0pt;
font-family:"Stylus BT","sans-serif";color:#2D4D5E'><o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:7.5pt;color:#CC9900'>PROJECT ENGINEER</span><span
style='font-size:7.5pt;font-family:"Times New Roman","serif";color:#CC9900'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>25501 west
valley parkway<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>olathe ks 66061<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>direct 913
344.0036<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>fax 913
345.0617<o:p></o:p></span></p>
<p class=MsoNormal><i><span style='font-size:10.0pt;color:#2D4D5E'>Check out
our new web-site @ </span></i><span style='color:#1F497D'><a
href="www.smithboucher.com" title="blocked::www.smithboucher.com"><span
style='font-size:10.0pt'>www.smithboucher.com</span></a></span><u><span
style='font-size:10.0pt;color:blue'> </span></u><span style='color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><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"'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Priya
Premchandran<br>
<b>Sent:</b> Friday, March 12, 2010 11:16 AM<br>
<b>To:</b> bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> [Bldg-sim] ASHRAE 90.1-2004 and task lights<o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Hello Listserv members,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I just received a question from GBCI on a LEED CI project
related to lighting power density. It was my understanding that per ASHRAE
90.1-2004 std. <u>plugged in</u> task lights are exempted from the overall
lighting power density calculations. However, our review came back saying that
task lights should be included in the overall calculations. Is this true? Has
the standard changed recently?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal> Any input is greatly appreciated.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thanks,<o:p></o:p></p>
<p class=MsoNormal>Priya<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:10.0pt;margin-right:0in;
margin-bottom:10.0pt;margin-left:0in'><b><span style='font-size:9.0pt;
font-family:"Arial","sans-serif";color:#777777'>Priya Premchandran, Int'l
Associate AIA, LEED® AP</span></b><span style='font-size:8.0pt;font-family:
"Arial","sans-serif";color:#9C9C9C'><br>
<a href="http://www.serapdx.com"><span style='color:#9C9C9C'>www.serapdx.com</span></a><br>
503.445.7368<o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-GB style='font-size:14.0pt;font-family:Webdings;color:#009242'>P</span><span
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