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<div class="moz-cite-prefix"><br>
Ooooops from Robin...<br>
<br>
<br>
<div class="moz-cite-prefix">On 8/28/2014 11:00 PM, Robin Gudgel
wrote:<br>
</div>
<blockquote
cite="mid:012701cfc34e$905be280$b113a780$@midnitesolar.com"
type="cite"><big><big><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Bob,
I was mistaken about NEC2017 covering all PV systems. IT
will still just be for buildings.</span></big></big></blockquote>
<br>
<br>
<br>
On 8/28/2014 4:53 PM, <a class="moz-txt-link-abbreviated" href="mailto:boB@midnitesolar.com">boB@midnitesolar.com</a> wrote:<br>
</div>
<blockquote cite="mid:53FFC0E7.9070208@midnitesolar.com" type="cite">
<br>
>>>3) What about portable generators, and folks back
feeding the grid or house with little to no protection at all.
<br>
<br>
Luckily, if the house is still connected to the grid when they try
this, the little generator will not be able to
<br>
power the neighborhood. Maybe not even the pole pig transformer's
magnetizing inductance current in
<br>
some cases ? It would more than likely trip the generator
breaker or slow down its engine or just
<br>
stop the generator completely or toast it.
<br>
<br>
boB
<br>
<br>
<br>
<br>
On 8/28/2014 2:28 PM, Ray Walters wrote:
<br>
<blockquote type="cite">So this would make sense that this Rapid
Shut down provision would cover all generator backup systems
too, not just solar.
<br>
Considering auto start backup generators have been around for
many decades, I have a few questions:
<br>
1) Does NEC 2014 require Rapid shutdown for all generator
systems, or is solar once again being singled out for additional
requirements not applied to everyone else?
<br>
2) What is the history of fire fighting and backup generators?
It seems that there would be much more long term experience,
than a hand full of incidents in the solar industry.
<br>
3) What about portable generators, and folks back feeding the
grid or house with little to no protection at all. Are there
safety precautions that fire fighters take to make sure a
neighbor isn't powering up lines down the street? I've seen too
many male to male extension cords, so I know this is real issue,
that can't be prevented by the NEC code alone. Basically any
idiot can go to Home depot and create a very dangerous situation
quickly.
<br>
<br>
R.Ray Walters
<br>
CTO, Solarray, Inc
<br>
Nabcep Certified PV Installer,
<br>
Licensed Master Electrician
<br>
Solar Design Engineer
<br>
303 505-8760
<br>
<br>
On 8/28/2014 1:16 PM, <a class="moz-txt-link-abbreviated" href="mailto:boB@midnitesolar.com">boB@midnitesolar.com</a> wrote:
<br>
<blockquote type="cite">
<br>
It would also make sense to shut off an auto start generator
with the Rapid Shutdown button. Some generators are designed
to start up upon loss of grid. Once the first responders have
the meter pulled, that could start up a generator and cause
risk of shock.
<br>
Robin Gudgels
<br>
<br>
<br>
</blockquote>
<br>
</blockquote>
</blockquote>
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