Tom wrote:
Yes, but Enphase Microinverters shut off, SolarEdge inverters shut off, for
just that reason. This makes them certifiable. They are probably the better
ones for my application.

You mentioned it was possible with more equipment. Can you elaborate? I want
to primarily be on the program, but when my grid goes down for any serious
length of time what more equipment would you recommend me considering that
both meets the code, made in Ontario and is tried and true, suitable for the
program. I don't want knock offs or copies, or offshore stuff. Must be
certified and meet the code, etc etc, and not so complicated it needs NASA
Satelite Engineers to approve my drawings.


Thanks

I have nothing to do with solar systems and what I know is based on
the research I did to decide whether or not such a system made any
sort of sense in my situation.

I did not find any system that would maintain power in a grid outage
that did not include some sort of backup power, i.e. either a battery
storage system or an autostart generator.

All the systems I found were integrated systems in that I did not find
anything you could add to an existing simple PV system and convert it
to one that would maintain power in a grid outage.

All I can suggest is an extensive web search to see if there is anything
on the market that meets your needs.


--
Jim Pennino

In article ,
wrote:

I have nothing to do with solar systems and what I know is based on
the research I did to decide whether or not such a system made any
sort of sense in my situation.

I did not find any system that would maintain power in a grid outage
that did not include some sort of backup power, i.e. either a battery
storage system or an autostart generator.

I think that's difficult to do, unless you have already converted to a
pure-DC system and have devices which can tolerate brownouts.

Solar-panel systems have a somewhat funky power-delivery curve. If
you try to draw more power than they can deliver, their output voltage
drops like a rock. For some sorts of loads (incandescent) this may be
tolerable. For surge loads such as motors, it's bad... the motors can
stall, or bog down, and may burn out. Some classes of load (e.g. many
switching power supplies) will start drawing *more* current as the
voltage drops, in order to continue delivering the required amount of
power to their load... and the solar panel's output voltage drops
further, current load goes up, voltage drops more... THUNK.

So, driving inverters or other variable loads directly from a
solar-panel array, without at least *some* stored energy to handle
spikes in load or drops in supply (cloud-over-the-sun) is a tricky
problem to solve, and I believe it's very likely to result in a system
which simply isn't reliable. If you're going to spend a hefty chunk
of money for one as a back-stop against grid outages, that probably
isn't a satisfying result.