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<font face="Arial">Thanks, that helps. Now to figure out Chinese
lumens. :)<br>
<br>
</font><br>
<div class="moz-cite-prefix">On 8/12/19 5:59 AM, Stephen Litterst
via Stagecraft wrote:<br>
</div>
<blockquote type="cite"
cite="mid:44388ef7-f5ce-2b62-67e6-d5fe31b36d20@gmail.com">On
8/9/19 1:50 PM, Jerry Durand via Stagecraft wrote:
<br>
<blockquote type="cite">Are there some rules of thumb for fixture
wattage for various rooms (shop, lounge, etc.)? I know LEDs
vary a lot in efficiency (see below) but most common LED
assemblies seem to be sold by Watts.
<br>
</blockquote>
<br>
The needs are different, depending on what each room would be used
for. And the guidelines are given in illuminance, since lumens per
watt differs wildly from fixture to fixture.
<br>
<br>
Digging into an old textbook, I found this chart --
<br>
<br>
<a class="moz-txt-link-freetext" href="https://books.google.com/books?id=vfcFAAAAQBAJ&pg=PA333&lpg=PA333&dq=Table+14-2+Machine+Shops+and+Assembly+areas&source=bl&ots=wIwBd3dGpO&sig=ACfU3U0SXtvnI_Rwb2TB8vKBjucEG2ssCQ&hl=en&sa=X&ved=2ahUKEwiFifvYsP3jAhUIhOAKHQUSDrcQ6AEwCnoECBIQAQ#v=onepage&q=Table%2014-2%20Machine%20Shops%20and%20Assembly%20areas&f=false">https://books.google.com/books?id=vfcFAAAAQBAJ&pg=PA333&lpg=PA333&dq=Table+14-2+Machine+Shops+and+Assembly+areas&source=bl&ots=wIwBd3dGpO&sig=ACfU3U0SXtvnI_Rwb2TB8vKBjucEG2ssCQ&hl=en&sa=X&ved=2ahUKEwiFifvYsP3jAhUIhOAKHQUSDrcQ6AEwCnoECBIQAQ#v=onepage&q=Table%2014-2%20Machine%20Shops%20and%20Assembly%20areas&f=false</a>
<br>
<br>
If the link doesn't parse, it's from "Industrial Electricity
<br>
By Michael E. Brumbach" Table 14-2, Machine Shops & Assembly
Areas.
<br>
<br>
Steve L
<br>
<br>
<br>
<br>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Jerry Durand, Durand Interstellar, Inc.
<a class="moz-txt-link-abbreviated" href="http://www.DurandInterstellar.com">www.DurandInterstellar.com</a>
tel: +1 408 356-3886
@DurandInterstel
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