Can someone draw me a diagram of how to hook up a 24v compressor? I know it would normally go something like this… Negative - Positive on the batteries, and then a negative and a positive from each battery to the compressor, but I don’t know how it would work…
You’re right on track. To get 24V you need to connect two 12V batteries in series like my image hopefully shows. The series connection is the cable between the positive post on one battery and the negative post on the other battery. The arrowed lines out go to the load (compressor).
On the other hand, if you connected them in parallel (positive to positive and negative to negative) you would have 12V out, but essentially double the current delivery.
Hope this helps / confirms your plans.
Thats what I thought, but how would you connect the pos to neg on the batteries without shorting the batteries out?
is your vehicle electrical on 24V?
No, everything is running on 12v, but I have 2 batteries…
dont do it…u wont be able to charge the system with a 12v alternator…i have 2batteries too…u dont need to wire it like that…the amps that a regular compressor pulls is not much to try to change up all ur battery charging system
I was thinking about getting the XD3000 and don’t want to pull 180 amps… I read you can run it in 24v and only pull 90amps
just get the 12v xd3000…make things simple…its like wiring up a stereo amp with such thick power cables
only problem is… 180amp pull from the compressor @ 12v… versus 90amp pull from the compressor @ 24v
I have a 200amp alternator. So it looks like I’ll just stick with the 12v compressors I have now…
I am also considering buying the XD3000 to have a much longer blasts. I now have two 5 gallon tanks although I am not satisfied with how long I can blast my K3 and S4 which I sometimes blast at the same time. I am considering adding two extra 70ah batteries in parallel when I get the XD3000 so it wont put too much stress on my alternator .
^^^WOW!! Nice!
Its only for a short bursts. I had an older Oasis and that thing would heat up and go out on thermo overload. The new stuff is much better. You have to be careful how you wire stuff I was a previous Powerstroke diesel owner. Alot of stuff can burn up. Run the appropriate wire and fusing for it and you should be ok. If all else fail go get a dual alternator set up from a powerstroke ambulance.
I second DirtyJersey’s suggestion on the extra alternator.
Trying to hook up batteries at both 12 and 24 volt is a bad idea. If something gets crossed you’ve got a good chance of blowing up your PCM/ECM, among other things.
Kris
Just buy a belt-driven compressor and mount it where the second alternator goes. Then all you have to do is buy the longer belt that is on the trucks with dual alternators, and you will have a much better setup than the electric compressor setup. There are companies that make compressors for the 6.4l engine for ambulances.
I bought a second alternator for the 6.4l engine, complete with mounting bracket, pulley, and longer belt. I got it on eBay for $75, and it’s brand new. I have not installed it yet because the ECM has to be reflashed to run the second alternator.
Nice. Good luck! Should be good to go now. Post up some pics of you dual install.
It is best to get a compressor at the same voltage as your vehicle. To run a 24V compressor from a 12V system requires a high power switch to put them in parallel while charging and then in series to run the compressor and that’s too much trouble. 2 batteries in parallel with a 200 amp alternator should be more than enough.
:eek::eek::eek::eek::eek:
Dan, are you running a compressor, or a small town???
A small town of course…
The overall current draw is basically the same for any 12V or 24V compressor. The difference is how long it takes.
I’ve heard this counter argument before, and it just doesn’t make sense to me. I get that an Oasis takes a short time to fill an air tank, but operating it may nearly kill the battery and could defeats the alternator’s ability to charge the battery fast enough to keep up with the amp draw being demanded. Sucking the power from a system so quickly affects vehicle performance severely.
If you stretch out that power drain on the system over time to where the vehicle can easily operate without any negative effect on the vehicle performance, that would be better for the vehicle’s charging system (battery, alternator, electrical systems) - wouldn’t you agree?
Typically, 24-volt compressors draw approximately half the amperage of a similar 12-volt compressor - so you can’t really compare them to one another. To compare a power-hungry series motor’s power consumption needs with a 12-volt motor is also not something you can really compare. - Unless we’re talking about some mega-onboard air system that is running an Oasis, or nine or 10 480Cs…
If the whole motoring world had heavy duty charging systems, then am draw wouldn’t be so much of a concern. I can only imagine from seeing our returns