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What alternator do I need for my car?

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.


Can I put a higher amp alternator on my 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. Here’s why: Amperage is basically the amount of electrical current your alternator can supply. And it basically operates off of supply and demand.


How many amps is a GM alternator?

The older GM 10Si and 12Si alternators have limited capacity especially if you’re planning lots of accessories. In stock form, the most you can expect from these old dynamos is 90-100 amps. The good news is PowerMaster Performance offers 10Si and 12Si high output clones that make as high as 140 amps.


Is a high output alternator necessary?

When you have an alternator, you’re turning mechanical energy into electrical power. However, a typical alternator runs out of juice very quickly. If you have a powerful car, you’ll need an alternator with high output to help you get the most out of your vehicle.


How do I know what Chevy alternator I have?

Two of the most commonly used models were the 10SI and 12SI alternators. Two key identification points of the SI alternator is the external fan with V belt pulley and the 2 charge indicator light terminals (male blades) that appear on the backside of the alternator.

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What is a GM one wire alternator?

Simple, One-Wire Hook Up. As you might assume, the concept behind a one-wire alternator is that there is a single wire used to connect the alternator to the battery. The voltage regulator is internal, and there are no other wires that need to be connected to your electrical system.


What size alternator do I need to run a 3000 watt inverter?

To obtain 3000 Watts AC at 120 Volts from an inverter, you must replace your 100 AMP alternator with an expensive 250 AMP alternator and install MULTIPLE heavy duty batteries. In addition, 50 more amps are required to operate your vehicles accessories, lights, flashers etc.


How many batteries do I need for 3000 watt amp?

For a 3000-watt inverter, the number of batteries you need depends on their amperes per hour. For example, the average car battery has a 50Ah rating. If the battery banks you want to purchase are also 50Ah, you will need six of them for a 3000-watt inverter.


What size capacitor do I need for a 1500 watt amp?

A: The rule of thumb is to put in 1 Farad of capacitance for every 1,000 watts RMS of total system power. But there is no electronic penalty for using larger value caps, and in fact, many see benefits with 2 or 3 Farads per 1,000 watts RMS. The larger the cap, the more charge is available for the amp when it needs it.


What is the benefit of a higher amp alternator?

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Better Battery Life That’s because an oversized alternator produces more output at lower speeds, including idle. That increased output prevents the battery from having to help supply the load—and this keeps it at a more ideal state of charge. The battery cycles less, which translates into better battery life.