On Thu, 18 May 2017 16:37:20 -0700 (PDT), trader_4
wrote:

On Thursday, May 18, 2017 at 3:07:49 PM UTC-4, wrote:
On Thu, 18 May 2017 10:44:57 -0700, "Tony944"
wrote:

SOLAR POWER
What you need to know about Solar power that the slimy installers and
Solar company dont tell you and dont want you to know!!!
Solar Energy is nice clean and chip; but who dose actually benefit from it???
Well yes every body dose benefit but most of it goes to Financial Organizations;
unless you purchase it out right!!
Warning The Kicker
You can not have any power: if your power line is down
In other words the Electricity must be on in order to have
power from Solar system €œHow nice or stupid€�
What is purpose of Solar if you can not get power from
It while you may not have supply from you local Electric.
Yes it will need that inverters would need additional circuitry for which it
should not be big deal, perhaps extra $20.00 will do! But solar and Electric
companies do not want you to have that,
because some or too many people would be taking advantage of self sufficiency.

This is more than a simple "$20" circuit. You could certainly clock
the inverter for much less than that but the rub comes in with
transfer equipment that will satisfy the PoCo and be NEC compliant.
You will also need some kind of automatic load management unless you
are right there managing the load. It is going to take a lot of solar
to deal with the locked rotor of an HVAC compressor, especially if the
water heater or dryer is going.

Agree, it's not a $20 solution. The insurmountable problem is that
when the grid goes down, if you were to rely on solar, what happens
when a cloud goes by? Would customers want a system that can only
supply backup power in the day, with enough sun and would they tolerate
what happens when clouds go by? Would they put up with brownouts
or total power cut out? Would there equipment? And it's no solution
at night. That's why companies installing solar will tell you
that with no grid, no batteries, you have no power to the whole
house and why the eqpt is designed that way. In the other thread,
Diesel did show an example of an inverter that will supply one
isolated outlet with power without the grid. I can see that,
for use for charging cell phones, charging a sump pump battery, etc.

I can see it working somewhat with the right load management software
and carefully isolated loads that get priority when it is browning out
so to speak. Wide mouth inverters can handle the change in solar
output and sustain the voltage but the current it can provide will
drop. You would still want a little battery power to hold it while you
are switching but you could survive and do an orderly shutdown on big
loads. Once you get that sophisticated you might as well be looking at
incoming clouds in real time. As I said this is far from a $20
solution.
I have already said, the $20 solution might be a small battery
inverter to clock the grid inverter and a main breaker interlock that
would allow an emergency switch over but it might crash with a load
spike or a cloud. If your bootstrap inverter was 1500w or so it might
carry over short term spikes or interruptions in solar output. That is
still hundreds of dollars not tens of dollars.