How big of an alternator do I need for 3000 watts?

250A
3000 watt / 12V is equal to 250A. A 250A alternator is needed to keep up with it. Since your engine would have to work just as hard as any portable 3KW generator to keep up with the amplifier, you would need a large fuel tank.

How big of an alternator do I need for 2000 watts?

To figure out how much capacity or amperage the alternator must deliver, determine how much extra power the audio system demands on top of the current system. For example, if you installed a 2,000-watt amp, assuming a nominal voltage of 13.5V, you’d add roughly 150 amps of demand to the electrical system.

What size alternator do I need for 1000 watt amp?

As a general rule, you need about 100 amps of current for every 1000 watts of power generated.

How do I choose the right alternator?

How to Choose an Alternator
  1. Make a list of your electrical components.
  2. Determine amp draw on each and total.
  3. Select an alternator with more amps than estimated to ensure long life of the alternator.
  4. See our website for additional tips.
  5. Call our Tech Support Line for selection assistance…

How many watts can A 120 amp alternator handle?

thats an average between output surges. Thats just sort of a relative rule of thumb. The other sorta relative rule of thumb is that 10 amps can translate to somewhere in the neighborhood of 100 watts… so a 120 amp alternator could do 1200 watts.

How many watts can A 270 amp alternator handle?

A typical 12 volt alternator has an operating voltage of around 13.8 volts normally but will likely drop to about 13 volts at peak power. 13 times 270 is 3,510 watts. So we might expect a typical 12 volt, 270 amp alternator to be able to supply around 3,500 watts maximum.

What happens if you put A bigger alternator in your car?

You can never have too much amperage when it comes to alternators; therefore, you never have to worry about choosing an alternator with too high of a rated output. … So high-output alternators will not harm your components or charging system, no matter how high you go with the amps.

Is A 160 amp alternator good?

The high amp alternator will give you more replacement juice if you are running any high amp load appliances. The 160 amp is known to be used on emergency vehicles that are at a standstill and still running lots of 12v power thru said appliances.

What does A 220 amp alternator do?

With a 220A alternator, you can run a large capacity inverter (2kW or greater) while the engine is running. This allows using things like a convection/microwave, or secondary A/C unit.

How many amps is too much for alternator?

If your vehicle’s electrical load exceeds the amperage—or maximum capacity—of your alternator, you’re asking for trouble. Most factory alternators are rated at 65 to 100 amps and are capable of handling a vehicle’s basic accessories—headlights, gauges, fuel pumps, transmission, A/C, etc.

Can an alternator be upgraded?

In a lot of cases, you can upgrade to an aftermarket radio without worrying too much about installing a high output alternator. However, there are cases where you’ll clearly end up piling on more than the factory alternator can handle.

Do alternators charge at idle?

Assuming the alternator, engine, belt, and battery are all in working order, then yes, a car battery will charge when idling. The only caveat is that it doesn’t really “charge” that fast. This is solely due to the fact that the engine doesn’t have a load on it when your car is simply idling.

Is it OK to use A lower amp alternator?

You will do no harm installing a higher output unit as the amps are on demand. Now if you install a lower output unit then you will have issue with the battery not being fully charged and the alternator not supplying the required power and the car running more off the battery. This will leave you stranded.

How do I match my alternator to my battery?

Your alternator should be capable of delivering rated output equal to the maximum acceptance rate of your house battery bank. In other words, the alternator’s rating should be equal to 25 percent (lead acid) 30 percent (gel) or 45 percent (AGM) of your total battery capacity.

How many batteries do I need for 5000 watt amp?

You will need at least one 450-500 12V battery or two 210 12V batteries to supply 5000 watts of power for 30-45 minutes. If you’d like an hour of 5000 water of power, you’ll need a 750ah 12V battery.

What happens if you fit the wrong alternator?

When the alternator is failing, it cannot provide the car with enough electrical energy, and as a result, the battery starts to make up some of the slack. … In addition, when the alternator is not working it doesn’t provide any regenerative charge to the car battery which can also cause the battery to drain.

How do you do the big 3?

What happens if you put the wrong alternator?

A bad alternator can easily lead to a bad battery. … So when the alternator is bad, the battery begins to compensate for the power the alternator should have generated, because the car battery is not designed to supply power for extended periods, it will eventually wear out causing the vehicle to stop working.

Can an alternator fail suddenly?

When your alternator begins to fail it can cause a variety of different electrical problems in your car, and eventually cause a breakdown. Alternators can go bad suddenly, or slowly over time.

Do I need a specific alternator for my car?

You do need the specific unit for your car as the fittings differ from one unit to the next see if you can find a supply only unit and fit it yourself its an easy job.