Wiring help Needed

[luvrbus]

Ok I got my new batteries finally,here the question I have 2 runs (parallel) of 3-8D batteries ea 12 volt on each run I have 24v inverters.I took pictures as I wanted to move the 2 shut off switches and the fuse and junction bar to a different location

Now I have lost my photos because of Windows 10,help me out I do I get the 24 volts to run the inverters using the 2 switches on 2 -12 volt battery runs I know it should be simple but all I can get is the sparks and lead   a drawing would be nice The guy I hired that was supposed to be a genius on wiring turnout to be dumber than a box of rocks so he is gone  

[niles500]

Luvr, you really need an even number of Batts per inverter to b run 24v series parallel - fwiw

[jav9956]

It is a little difficult to fully understand your issue based on the description but I will try to help.

If you are running 12 V batteries you need to run two of them in series to get 24 V. Amperage stays the same in series but the voltage output increases. You are using more volts to push less current so it is slightly more efficient than a 12 VDC system. Your overall power (the thing that matters) is the watt hours... volts * amp hours.

If you run two 12 V batteries in parallel you will end up with 12 V but double the amp hours.

As an example let me use the Trojan t105's because I am familiar with them. They are 6V and 225 amp hour. Two in series would produce 12V and 225 amp hour. This is 2700 watt hours. Now two 6V batteries in parallel would only produce 6 V but would have 450 amp hours; this is also 2700 watt hours. So you have the same power available either way but you will be more efficient with the higher voltage system because the % voltage loss you experience will go down.

I am not sure if that is the info you are looking for. If you just want to know how to wire two 12 V batteries in series you just hook them up (order is important for this example) +, -, +, - . If you want 24 V parallel with 12 V batteries you must have 4 batteries and you end up with two sets in series ( +, -, +, - )... now imagine the two sets side by side, to hook them in parallel you link the first two pluses and the last two minuses. Hope that makes sense. You would then run a lead from the first two pluses and that is your positive lead and a lead from the last two minuses and that is you negative lead. 

This is a good site with pictures:
http://www.altwindpower.com/battery-series-parallel.php

If I completely missed what you were getting at, my apologies!

[luvrbus]

Lets try again I have 6-12 volt batteries 3 in each parallel run that is 675 amp hours @ 12 volt for each bank,so you have 12 volts 675 amps on each bank it should be as simple as tying the 2-12volt banks in series to get the 24 volt right or wrong ? but it's not working through the 2 switches.I went back and checked his runs both are wired in parallel for 12 volts.Can I just use 2-8D's ( 4 total) tied in series for 24v to each inverter since the inverters are a stacked set and forget about the 12 volt runs.I just don't want to blow one of inverters 

[Dave5Cs]

Clifford go here. It is a link to a picture page that I like to use. You can find what you need here.
Dave5Cs

https://www.google.com/search?q=12+volt+batteries+in+series+and+parallel&sa=X&tbm=isch&tbo=u&source=univ&ved=0ahUKEwiVvKXO1qrMAhVG9GMKHd5kANYQsAQITA&biw=1280&bih=589&dpr=1.25

I have 4, 6 volt batteries wired in series to make 24 volts.
You should have 2, 12 volts wired in series would be 24 volts

[Dave5Cs]

Here is a diagram for 24 volt with 6 batteries but you wire them Series and parallel. About 1/2 way down look at 24 volt with 6 bats.

https://www.survivalmonkey.com/threads/battery-bank-wiring-diagrams-6-volt-12-volt-series-and-parallel.37039/

Dave5Cs

[luvrbus]

Thanks guys I figured it out the 2 switches kill the power to the 2 inverters not the battery bank both banks are wired in parallel then in series tying the 2 banks together for 24v supply .I am going to pull 1 inverter and make the wiring simple besides I don't need 8000w of sine wave inverter power 

[Dave5Cs]

You might if you install the hot tub!...

[luvrbus]

You might if you install the hot tub!...

You love starting stuff Dave the hot tub or the soaking tub is not happening  second thought let me rephrase that I don't think it is going to happen.Right now as you know it's sewing cabinets ,sewing machines and a claw foot tub with a causal mention you think my infrared sauna would fit here "nope"but that is subject to change 

[muldoonman]

 Cliff, you take up sewing?? Always thought you were a motor man.

[Dave5Cs]

 

[akroyaleagle]

Dave,

What a great page you referenced!

[Dave5Cs]

Yep I don't know about others but I am visual so I put into Google pictures of and what ever I am looking for. You can also use the picture to go to the website or a website to find the thing also.

Dave5Cs

[buswarrior]

WARNING! Some of those battery bank pictures are showing imbalanced wiring, if that is of concern to you.

Good wiring can make inconvenient drawings....

from the initial contact points to the bank, there should be no path through the bank that an electron can make that is any shorter or longer than any other path.

Some of those pictures show the connections on one end of a string: the near battery gets to work harder, the far battery is being cheated.

Beware the associated linked info to those ones....!!

happy coaching!
buswarrior

[Dave5Cs]

So BW theoretically from the end to end if you measured the wiring on the Positive side and then the negative sides all put together they should be the same length and from the final lug to inverter etc. should also be no longer than each-other?
Dave5Cs