i bought a cuttingedgepower system

[Armycombatmedic160thSOAR]

i bought this 8000 watt pure sine inverter system and a 100 Amp hour chin battery and going to use 4 of these solar panels I do have some newbie questions so here goes:

1. can i combine 200 Amp hour chin batteries to the 100 Amp hour set up
2. The controllers on this system are rated for 1200 watts total. so in theory i can add 2 of 100 watt panels to max it out
3. I know to wire batteries in series, does same apply to how i wire my panels.
4. How many 100 Amp hour batteries do you guys run in series ?

5. Thoughts on this cutting edge system. it will stay indoors in a dry place.

6. i plan to attach my panels to something like this mount bracket, but i can easily make those myself.

7. my system will be for emergency back up , it is a 12 volt system. and other stuff

Overall thoughts



i know these are basic questions,

 

[rmaddy]

You should not make any attempt to run an 8000W inverter on a 12V system. That's an insane amount of amperage. That's over 660A without taking into account the inefficiencies. You would need to run 3 4/0AWG cables in parallel for each connection. You need a 48V system for 8000W.

Also note that even if you had 300Ah of 12V batteries, You could only run an 8000W load for maybe 25 minutes.

 

[pollenface]

I'd say that inverter is 8000w peak, it physically looks too small to be 8000wrms and I'm noticing a lot of cheaper manufacturers adversing the PEAK capacity instead of RMS

 

[pollenface]

i bought this 8000 watt pure sine inverter system and a 100 Amp hour chin battery and going to use 4 of these solar panels I do have some newbie questions so here goes:

1. can i combine 200 Amp hour chin batteries to the 100 Amp hour set up
2. The controllers on this system are rated for 1200 watts total. so in theory i can add 2 of 100 watt panels to max it out
3. I know to wire batteries in series, does same apply to how i wire my panels.
4. How many 100 Amp hour batteries do you guys run in series ?

1. Yes for parallel, no for series
2. what is the amp rating on your charger, is it mppt or pwm? Can you change the parameters on the charger to suit the battery? Make sure you're aware of this before buying the charger otherwise you're throwing away money and will be destroying your lithium batteries.
3. Depends if you're wiring in series or parallel
4. Depends what your system voltage is, none for 12v, 2 for 24v, 3 for 36v ... etc. You should take note of the maximum discharge current for that battery to make sure it can run your inverter.

To understand how much current your inverter will pull at PEAK divide 8000 by the battery voltage, then by 0.85 to account for heat/efficiency losses, 8000w is 735amp @ 12.8v

 

[whardin]

The inverter in the picture looks like a 3000W and not an 8000W to me.

 

[OffGridInTheCity]

i bought this 8000 watt pure sine inverter system and a 100 Amp hour chin battery and going to use 4 of these solar panels I do have some newbie questions so here goes:

1. can i combine 200 Amp hour chin batteries to the 100 Amp hour set up
2. The controllers on this system are rated for 1200 watts total. so in theory i can add 2 of 100 watt panels to max it out

I'm guessing you bought 4 x 250watt panels? (for 1000w) and then you are thinking of buying 2 more 100w panels?

3. I know to wire batteries in series, does same apply to how i wire my panels.

**IF you will post the specs of the panels and the controller you can get a specific set of options.

But just in general....
You're controller will have a max voltage. Let's say you're 250w panels are 30v each. If you wire them in series it would be 30v * 4 = 120v. And typically you want to stay below the max about 20% or so to allow for cold weather etc which will cause panel voltages to jump up.

If you add try to add 2 x 100w panels to the series at 18v each - you're up to 156v if you do all in series there are things to consider when you mix panels. I'd suggest some research - this is a good starting place - https://www.altestore.com/blog/2016/09/wiring-mismatched-solar-panels-in-series-and-parallel/ - and is trustworthy info.

You'd be better of (in my opinion) adding a 5th 250w in series - as you can typically overpanel 'a little' in terms of wattages and panels rarely do 100% so 1250w in panels to 1200w controller may work. However, you should not over voltage (comments above) as controllers are not forgiving on the voltage.

But back to max voltage of panels. I'm guessing that 120v or 150v is too high. So you'll likely need to do 2s2p (2 parallel 2 series) for 60v and of course you can't add an 'odd' 5th panel doing that.