On Friday, May 12, 2017 at 7:42:14 PM UTC-4, Diesel wrote:
Fri, 12
May 2017 14:05:39 GMT in alt.home.repair, wrote:
He's not in a high population density area, though. And, the grid
isn't the most stable where he resides. So, Solar made sense for
him.
Ha, thats the best part.
The best part?
Does he know that most grid tie inverters will NOT function
without the grid.
You seem to be a bit behind the times...What do you think the
battery banks are for?
He said "most" not all. What percent of residential solar installs
have battery banks? My guess is less than 1%, whatever the number
it's insignificant. Also, you claim was that a battery bank was not
required, that you can power the house from the array, without batteries,
while the grid is down.
http://solar.schneider-electric.com/...brid-inverter/
Here's the one he's usings spec sheet:
http://cdn.solar.schneider-electric....DS20161116.pdf
It's the one to the right.
And if you look at the installation instructions, it clearly says that
it must be used with a BATTERY BANK. I didn't see anyone in this thread
arguing that you can't power a house without the grid if you have a
battery bank.
Here's another one able to provide limited power to an outlet if the
grid does go down:
Note the distinction between "limited power to an isolated outlet" and
powering the whole house.
https://beyondoilsolar.com/product/s...s-22-inverter/
What that means in practical terms, he cannot use the electricity
from solar during a power failure.
Yes, he can. His inverter doesn't need the grid to be online in
order to function, it needs sunlight. And if none is available, a
battery bank.
But you specifically claimed no battery bank was required.
It's not a 1st generation setup I'm discussing here.
For the times when the sunlight isn't available AND the grid is
down, it will happily run on battery bank(s) and continue to provide
his entire home with power. Should he ever opt for purchase and
install of said banks. And, it's a scalable system. If he exceeds
the capacity of the inverter he already has, he can add another one!
And another, etc. Upto 102KW's worth, infact.
And if the grid is down with the sun shining and there is no battery
bank, there is no power to the house. Which is what we suspected and
is the case.
What do you think the battery banks are for? ****s and giggles?
Something to look at and admire?
You claimed no battery bank was required, that you could power the
house during daylight, with the grid down.
I think that is a travesty and the rules re inverter designs
should be changed.
I think your knowledge of this subject is several years out of date...
ROFL
Right now this behavior is REQUIRED by the rules to prevent the
possibility of backfeeding power to a dead power line.
You've never heard of an interlock switch? House Generators use them for
the same reason...He also has a manual switch he can use that will
seperate his house from the grid, even if it is hot. He can run
entirely on solar power, if he so chooses.
I guess these solar experts haven't either?
https://www.solarenergyworld.com/faq...making-energy/
"Many people considering going solar ask if a solar system works during a power outage. If you have a solar battery system as well as a solar PV system, your power will continue to work. However, since your system is grid-tied, for safety reasons, if there is a power outage your solar system will automatically shut off when the power goes out. Solar batteries can add as much as 30% to the cost of a solar system presently, so most homeowners do not go with this option."
And I guess this company that installs systema on Long Island is nuts too?
http://gogreenleafsolar.com/when-the...solar-stay-on/
Why your solar panels wont work during a power outage
Many homeowners have a difficult time understanding why their solar system wont function during a power outage, so in order to understand this issue better it is worth examining what is called €śanti-islanding..€ť Anti-islanding is a feature performed by solar inverters that allow them to sense when there is a power outage and shut themselves down in order to protect both your solar equipment and utility workers attempting to restore power. While anti-islanding is a valuable feature for protecting your solar equipment as well as utility workers it also required by the National Electrical Code, but this means that your solar system will be shut down during a power outage even though your panels are making energy. Thankfully, recent technological advances in solar have made it possible to still use some of the power generated by your solar system to power important devices in your home even during a blackout.
Installing a secure power supply
While typical solar systems dont allow you to power your home during a blackout, new technology from the inverter company SMA now offers the capability to support 3000 watts of €śsecure power supply.€ť A secure power supply is essentially an outlet connected directly to your inverter that allows you to use a 3000 watts of the power produced by your solar system during the daylight hours for backup power. While a secure power supply does not produce enough power to keep your entire house running during a blackout, it does allow you to plug in your most important devices such as cell phone, computers, refrigerator and even a microwave.
Currently SMA inverters are one of the only inverters on the market with the capability to be connected to a secure power supply. In order to connect a secure power supply outlet to your inverter the help of an experienced solar installer is necessary.
And note that it supplies an outlet with 3000 watts, not the house.
Have you actually installed any of these systems, generator, or
solar. Are you actually an electrician, or just going by what
someone has told you?
The above company has, obviously.
And where is here to you? Which rules are you writing about?
The NEC is what applies.
Feel free to admit at any time that you're wrong.