Anyone see an issue with this setup ?

[publin]

Hi All,

Just popping in to double check i haven't messed up my planing....

Here's the plan for the RV

5 x Topoint Solar 190 Watt Monocrystalline Solar Panel
1 x Outback Power FlexMax FM80 Charge Controller
1 x Outback Mate2 System Controller
6 x 12V 100ah SLA AGM Deep Cycle AGM battery Group 27
1 x Renogy 2000W 12V Pure-Sine Wave Battery Inverter


Is there anything i'm missing ? or would this setup work ?

Many thanks for any input

Dave

[Sunking]

Lots of things wrong.

12 volt system
12 volt Parallel batteries
Inverter to large
Prime number of panels 5

You did everything wrong except get a MPPT controller.

[publin]

Lots of things wrong.

12 volt system
12 volt Parallel batteries
Inverter to large
Prime number of panels 5

You did everything wrong except get a MPPT controller.

12 volt system can't be changed. Or at least i'm not doing it.

what's wrong with using 12v batteries ?

need a 2000w to run the microwave and the fridge etc... why would a large inverter be a problem ?

Also what's the issue with 5 panels if they're wired in parallel ?

[Logan005]

12 volts is 3 to 5 times more expensive than a 24 or 48 volts system. a 12 volt system requires more charge amps, parallel batteries discharge and recharge unevenly greatly shortening their expected lifespan, odd number of panels can only be wired Parallel, greatly reducing system efficiency and wasting your MPPT controller. 2000 watt inverter requires 24v min. 12volts is for automobiles and Toys. Your RV is not a toy, If you chose 12 volts, keep plenty of fire extinguishers on hand. this is a partial list I'm sure.

[Sunking]

what's wrong with using 12v batteries ?

Because you have to parallel them which wil significantly shorten there cycle life and require 6 times the hardware in cost and failure points. If you needed 600 AH, then buy 600 AH batteries

need a 2000w to run the microwave and the fridge etc... why would a large inverter be a problem ?

Because 12 volt 600 AH battery can only operate a 1000 watt Inverter without excessive voltage sag. Running 200 amps dc is a extreme fire risk. The highest wattage inverter and panel wattage for 12 volts is 1000 watts. .

Also what's the issue with 5 panels if they're wired in parallel ?

Lots of reasons.
It forces you to wire the panels in parallel. That means a lot of fuses, much larger wire, inefficient and you just threw away the advantage of using a MPPT controller. You want to wire the panels in Series to get the voltage as high as the Controller will accept which in your case is around 120 volts. Then you can use much smaller wire, no fuse or breaker requirements, much more efficient use of power. With 5 panels you cannot wire them is series as the voltage will be too high for the controller. You need to loose a panel or gain a panel.

If you must have a 2000 watt Inverter your minimum requirements are:

24 volt 600 AH battery
80 Amp MPPT Controller
Panel Wattage = 2000 watts.

You asked what the issues were, you got what you asked for.

[publin]

Thanks for the clear up

I'll go to 4 panels. total 760w
I'm looking for 6v battery options I have 2 Trojan T105's at the moment, but want to change them out to AGM and add 4. but keep the total battery speed under $1,000.
any ideas ? best place to shop ? what brand should i look out for.

Here's a link to the ones I was looking to get:

http://www.windynation.com/jzv/prod?itemId=5004

Thanks for a all the advice keep it coming

[Logan005]

AGM battery is not serviceable and will cost you double the FLA's and last half as long. 6volt is ideal choice for RV, 4 of them in series will get your 24v and you can use a standard step down for the House power panel.

[Sunking]

I'm looking for 6v battery options I have 2 Trojan T105's at the moment, but want to change them out to AGM and add 4.

A Trojan T-105 cost $140, and Trojan T-105 AGM cost $300. Both are 6 volt 220 AH batteries. The AGM has two advantages. weighs half as much, and can deliver twice the current which is important for an Electric Vehicle. It has two disadvantages, cost twice as much and last half as long. So be careful what you ask for. .