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More cranking power.
The same reason, if your trying to fill up a swiming pool. The more or higher pressure of flow of water will fill the pool up faster... more water in less amount of time. More voltage more flow of electrons in a given time and the higher the voltage the lower the amperage draw or current pull... you could use a smaller wire and not worry about it overheating and failing. theres a lot to take in consideration for the application.
The military uses 24v systems for several reasons. One is for cranking--and when big diesels started using electric starters, those starters were all 24v. (New heavy-duty diesels use 12v starters.) Another is for the radios we used to have. The old AN/VRC-12 series radios (VRC-12, VRC-46, VRC-47 among them) had vacuum tubes in the power amplifiers--the radios were designed in the 1960s, when they didn't have transistorized final amplifiers as big as the Army wanted. Tubes need high voltage to work, and it's easier to get to 350v if you start at 24v than if you start at 12v. The current generation of radio has a transistorized amp in it. The real reason they stick with 24v is commonality: if they went to 12v systems the warehouses full of truck parts, communications gear and everything else that can be used in a vehicle would work on only part of the fleet. They don't want a situation where they issue a troop a 12v radio to install in a 24v vehicle and the radio fries, or where they issue him a 24v chemical agent alarm to install in a 12v vehicle and his whole outfit dies from the nerve gas attack the alarm didn't tell them about.
For large vehicles using a lot of power especially for cranking the engine, 24 v is used because on 12 v the connecting wires would have to be of a heavier gauge . . . copper is expensive.
What else can I help you with?
How do you get 24 volt power from a 12 volt battery?
use two 12 volt batteries in series.
Can you use a 12 volt automotive bulb in a 24 volt application?
no
How do you convert 12 volt to 24 volt?
Use a voltage devider or a transformer.
Can 6 12 volt be wire to make 1 24 volt battery?
can 6 ,12 volt battery be wire to make in to one 24 volt battery for solar use in home
How do you convert 24 volt trailer lights to 12 volt?
To convert 24 volt trailer lights to 12 volt, you will need to install a voltage regulator or resistor in the circuit to reduce the voltage to 12 volts. Alternatively, you can also replace the 24 volt lights with 12 volt lights designed for trailers.
Will a 12 volt battery be damaged if charged with a 24 volt charger?
Yes, a 12 volt battery will be damaged if charged with a 24 volt charger.
Is 24 voltage a lot?
It depends on the use it is being put to. It is sufficient for a 24 volt circuit. Too much for a 12 volt circuit and too little for a 240 volt circuit.
How do you connect several 12 volt batteries to make 24 volt?
you only need two 12 volt batteries to make 24 volt. connect them in series
Can you use 4 12 volt batteries to make 24 volt?
No Yes. hook two in series, two in parallel.
Is a freightliner fl80 truck 12 volts or 24 volts?
12 volt standard, 24 volt optional.
Can you jump a 24 volt system with a 12 volt system?
No
Difference between 12volt armature and 24 volt armature?
The main difference between a 12-volt armature and a 24-volt armature is the voltage rating at which they operate. A 12-volt armature is designed to run on a 12-volt electrical system, while a 24-volt armature is designed for a 24-volt electrical system. This difference determines the power and speed capabilities of the armature when used in electrical devices.
