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The amp rating of the alternator is matched to the vehicle’s electrical system. Older vehicles with fewer accessories may only need a 70- or 80-amp alternator, while a newer vehicle with lots of electronics and accessories may need a 120- to 160-amp alternator.
How do I know what amp alternator I need?
Look for a diagram under or near your fuse box cover. It will have individual amperage numbers (sometimes along with volts) already set by the manufacturer. Add up those numbers to find what amperage your alternator needs to feed the car’s electrical system.
Is a higher amp alternator better?
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.
How do I determine the size of my alternator?
amps x volts = watts The total amperage you arrive at will be a ballpark estimate of the maximum power draw of the car and indicates how big of an alternator you need (measured in amps). It’s best to have a professional figure this out; every car and sound system is different.
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.
How big of an alternator do I need for 3000 watts?
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 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 amps is A 7.3 Powerstroke alternator?
High output 130 Amp Alternator for the 7.3L Diesel in Ford Superduty and Excursion.
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.
Why would you need A 220 amp alternator?
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.
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.
Is a 250 amp alternator good?
A 250 or 300 ampere aftermarket high output alternator should provide enough power for all your car’s systems and your high-powered stereo too.
How many watts can a 105 amp alternator handle?
So I have read that our alternator is 105 amps, and an alternator ideally runs at 14.4 volts.. So theoretically, since watts = amps X volts, the stock electrical system should be able to handle a 1512 watt load.
What happens if you put the wrong amp alternator in your car?
Your alternator will only give a certain amount of power to a certain component. No matter how high the Amps are, high-output alternators won’t hurt your components or charging system.
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.
What is the big 3 upgrade?
A big 3 upgrade will allow more current flow to all of your stereo components, improving your electrical system by ensuring more consistent voltage. This upgrade entails replacing the three main cables in your electrical system with 4 gauge or 1/0 wires.
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.
How many batteries do I need for an 8000 watt amp?
Rough answer? Simple. 8000/420=19.04 so 20 batteries (you need to round up in that case because 19 batteries will not suffice).
How many batteries do I need for a 2000 watt amp?
When it comes to batteries, a 2000 watt inverter needs 24 volts to generate power. You would be able to use 100Ah x 24Ah if you used 2 batteries of 12 volts 200Ah.
How many watts can a 100 amp alternator support?
Typically 100 Amps at 14 volts. That’s 1400 Watts.
How many watts can a 60 amp alternator handle?
A small alternator is 60 amps. 14.4 volts x 60 amps = 864 watts. A large alternator can be 200 amps or more.
How many watts can a 12v battery handle?
How many Watt-Hours in a battery?: Watts are pretty simple – it is just battery voltage times amp-hours. A 12 volt 105 AH battery can supply (under perfect conditions and to 100% discharge) 12 x 105, or 1260 Watt-hours (1.26 kWh).
