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<div class="moz-cite-prefix">These code references should be all
that is necessary to put the inspector on the right path. His
requirement that the source be capable of 100 amps clearly
conflicts with the intent of 690.10(A); it makes clear that the
inverter system only needs to be large enough to operate the
single largest load that it is intended to operate. Thus it is
permissible for combinations of loads to overload the inverter and
cause a nuisance shutdown.<br>
<br>
You might also ask if he'd be happy with a utility service
provided by a 15-kVA transformer. While capable of substantial
overloads, it is only rated to provide 63 amps continuously. Most
200-amp service panels don't really have 200 amps available except
for short durations.<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>
t: 541-568-4882</pre>
On 12/12/2012 4:43 AM, Jason Szumlanski wrote:<br>
</div>
<blockquote
cite="mid:CAJJtG3oA6KNYu6avGDBSqQbYJ_0rnGsykttmiEiuR6Lq8euL_g@mail.gmail.com"
type="cite">See 690.10, 690.1, and 690.3.<br>
<br>
<br>
<div id="WISESTAMP_SIG_6184">
<div
style="font-size:13px;font-family:Verdana,Arial,Helvetica,sans-serif">
<div style="margin:0 0 8px 0">
<p style="margin:0"><span style="color:#808080"><strong>Jason
Szumlanski</strong><em> </em></span></p>
<p style="margin:0"><span style="color:#808080"><em>Fafco
Solar</em></span></p>
</div>
</div>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Wed, Dec 12, 2012 at 1:00 AM,
William Miller <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:william@millersolar.com" target="_blank">william@millersolar.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Jeff:<br>
<br>
There is a code passage that specifically states that one
does not need to provide full rated ampacity to a service.
I am sure you can find it.<br>
<br>
Find a way to prove, mathematically, that the system planned
will provide adequate power. Create or find a spreadsheet
listing all appliances and wattages and system watt hours
provided. Dress it up, put your logo on it and sell it to
the building department.<br>
<br>
William Miller<br>
<br>
<br>
<br>
<br>
At 07:52 PM 12/11/2012, you wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
Content-Type: multipart/alternative;<br>
boundary="----=_NextPart_000_0006_01CDD7F2.373D3CB0"<br>
Content-Language: en-us
<div>
<div class="h5"><br>
<br>
We have a client that just had assembled on his rural
property a pre-fab modular home with "normal" wiring
and 200 amp main panel and meter base. However,
landowners around his property will not grant access
for electric utility to cross and he needs to move in
ASAP. He realizes that some day he should be able to
resolve this utility access but until then he wants us
to do an off-grid "basic" solar system with generator
backup so he can at least power lights, well pump, and
basic appliances. His budget will not allow a fully
off-grid solar system so we wanted to do reduced solar
and battery system with larger generator to fill in on
bad solar days. He does have good solar exposure and
lots of cleared land, but figures one day the solar
and generator will become a backup system to a future
grid connection so does not want to spend any more
than absolutely necessary.<br>
<br>
However ,this local inspector for this rural county
has no experience with solar and is expecting to see a
200 amp service connection from the utility before
allowing occupancy. He did hint that a 100 amp
service connection may be allowed but nothing less. I
know NEC does mention that a panel does not have to be
supplied with the amount of service capacity it is
rated for, but what other code issues can I point out
to get this accepted without getting into a pis-----
contest?<br>
<br>
Thanks,<br>
<br>
Jeff Yago<br>
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