[RE-wrenches] Very small PV systems for surveillance or other "micro" loads

[Dan Fink]

I also see lots of "load creep" Ray...."oh, forgot to tell you....we need
to add some all-night LED area lighting to the system. It won't use much
power......"

Dan Fink




On Tue, Jan 21, 2014 at 10:22 AM, Ray Walters <ray at solarray.com> wrote:

>  On these small projects, its very important to nail down the exact load,
> to keep the pricing sane.  I list on the estimate what the system is
> designed to do; for instance 18 w load 24 hrs/ day.  Then if something goes
> wrong and they are running more than they should you just gently point out
> that that was not what the system was designed to do.
> I learned a long time ago, that you can't take name plate power draw
> numbers, or count on the manufacturer to provide those numbers; you've got
> to confirm it with your own monitoring equipment.
>
> R.Ray Walter
> CTO, Solarray, Inc
> Nabcep Certified PV Installer,
> Licensed Master Electrician
> Solar Design Engineer303 505-8760
>
>
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