[Tim S FL]

Hello Solar experts. What is the Gimick in this add? Two weeks ago there was a similiar one for $1800 at 12KW.
This makes no sense as some people pay about $20K+ for a house system. Maybe $8-15K if they do it themselves. I googled it but did not find anything on these solar generators in my searches.
I use 4000 KW-HR a month. So even if this Generator system operates at 50% during a 8hr sun day that would be: 12KW x 8hrs x .50 x 30=1440KW-HRS a month. Or about 36% of a monthly bill.
I am sure alot of factors are missing. Ie cost to wire into house. It would probally only be able to work off grid.



http://www.saferwholesale.com/Solar...Ffs1HZc1i_dC_dstEVjqGbMcQQkye9F4jQaAmNo8P8HAQ

 

[rmay635703]

A 12000 watt off grid inverter with (2) panels is useless,

Sort of like having a 400 hp pedal bike with an 8 ounce gas tank

Might save $ 0.25 a day by our rates here

If it was a 12kw grid tie it might almost be worth it but off grid that's a huge rip off, maybe $500 worth there

 

[ItsNotAboutTheMoney]

The panels are __100W__.
Battery is 12.8V x 135Ah = 1.728kWh
The 12kW is just the peak inverter output.

It's a $3k system that can provide some emergency/portable power.

 

[ghostgs1]

That looks like total bs. No way two panels give you 12kW. Maybe 600 W. if they are the newer generation panels. Stick to reputable dealers, I like Civic Solar for my do it yourself install.

 

[srmarti]

The 12kw is nonsense. They state the panels will produce ideally 500 watt-hours per day. Would take days to charge a Volt. That's only 15kwhr per month. Not much of a dent in your monthly bill.

 

[Tim S FL]

Hello thank you for the replies I figured it was too good to be true. I should have noticed the rating on the panels do not match the inverter rating. They would have to be super high tech panels to get 12KW out of two panels. It sure did not look right.

 

[ssl92677]

Solar Powered Generator 135 Amp 12000 Watt Solar Generator Just Plug and Play - NOT A KIT

Includes:
2 - 100 WATT SOLAR PANELS
CHARGE CONTROLLER
2 - BATTERIES
12000 WATT PEAK POWER INVERTER, 6000 WATT CONTINUOUS POWER

Run Time on Typical Applications before a recharge is required 70 Amp unit:
Cordless Phone 40 Watts ... 1200.5 hrs
Cell Phone 20 Watts ... 210 hrs
Internet Modem 15 Watts ... 170 hrs
Inkjet Printer 50-75 Watts ... 150 hrs
Clock Radio 10 Watts ... 255 hrs
Laptop Computer 20-140 Watts ... 45-75 hrs
20" LCD Monitor 52 Watts ... 195 hrs
Table Lamp 40 Watts ... 450.5 hrs
13" TV 60 Watts ... 33 hrs
Desktop Computer 80 Watts ... 24 hrs - 72 hrs
8.8 cu. ft. Freezer 200 Watts ... 9 hr
18 cu. ft. Fridge 500 Watts ... 45 min
Sump Pump (0.5 HP) 500 Watts ... 270 min
Microwave 900-1600 Watts ... 60 min

In a typical emergency scenario, you could run (7) 40 watt lamps, your cell phone, your lap top a 20" flat screen TV and a radio all night long and recharge the entire system during the sunlight of the next day and still have power to spare.

 

[audguy]

The 12KW is just the peak the inverter can put out.

 

[stresstool]

Run Time on Typical Applications before a recharge is required 70 Amp unit:
[bla-bla]

Those are make believe numbers.

1) The inverter produces a modified sine wave so many of those things listed won't work properly (trust me on this, you would find many of them burning up [at least stinking up the place] after running not very long).
2) You are not going to get more than a couple hundred watts out of that inverter with those tiny wires connecting it to the battery as shown in the pix. You'd need to replace them with some very heavy gauge wires to get anything reasonable out of it.
3) Although it's true 135AH x 12v = 1600WH, it is not true you can draw 1600 watts for one hour. Lead acid batteries don't work like that. Expect the reality to be 160watts for 10 hours best case. You could probably push it to 320watts for 5 hours and it might work (but probably only for maybe 4 hours). 320 watts to the load is probably going to be 30+ amps out of the battery with losses, so you'd probably want to use some really short 6ga or larger wires to keep the voltage drop at a minimum.
4) Inverters of that size will have a parasitic load, probably pretty large. I don't know what that particular one has, but would not be surprised if it is up around 75 watts or more. You will need to adjust your expectations of total run time accordingly.
5) Lead acid batteries do not charge at a linear rate. If you were very lucky and your panels could actually produce a maximum of 200watts for 8 hours, you still would not get 1600WH into the batteries. The batteries would accept 200watts until they were about 80% full, then gradually slow accepting less and less over the next several hours until they reached 100%. In reality, I think you'd need two full sunny days to get the batteries from empty to full.

But good luck with it. I built something similar a few years ago for my camping rig: 2 12v batteries, 2 100watt panels, an inverter. My first inverter was a simple 1500watt modified sine wave unit that liked to burn up all the things I plugged into it. It would not run an electric fan (for long; something about motors and modified sine waves don't like each other). I replaced the inverter with a small 150watt true sine wave and that worked fine running everything I needed it to without incident. It just wasn't easy to find spots that were sunny all day to place the panels, so I had to be quite conservative with electric use during my travels.

 

[Cord]

AS much as I love solar there are times when a small wind system works better.

and without a 2 axis mount - solar will not be close to the number the ad's give you