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Next question: Should a 3R rated box like the SolaDeck, or an
Outback or Midnite combiner box, or even a bell-type box be used on
a rooftop that normally has snow on it in the winter?<br>
Here's the NEMA description for various enclosure ratings:<a
href="http://www.nema.org/Products/Documents/nema-enclosure-types.pdf">
http://www.nema.org/Products/Documents/nema-enclosure-types.pdf</a><br>
From NEMA's definitions there is little difference between a type 4
box and 3R box. But the seal on a type 4 box prevents the entry of
blowing snow while a 3R box doesn't.<br>
<pre class="moz-signature" cols="72">--
Kent Osterberg
Blue Mountain Solar, Inc.
<a class="moz-txt-link-abbreviated" href="http://www.bluemountainsolar.com">www.bluemountainsolar.com</a>
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