WHAT SIZE OF FUSE DO I NEED FOR MY CAR AMP?
hat Size of Fuse do I Need for My Car Amp? The answer is very simple. Just use this equation(Fuse size= P/V) for this purpose and find your required fuse for your car. Where P for Amp Power rating and V for alternator voltage rating. Or select your car fuse by AWG rating.
In this blog post, we’ll explain what Size of fuse do i need for my car amp and how to select the right one. We’ll also provide a few tips on installation.
So, whether you’re a first-time installer or an experienced pro, read on for all the information you need to get the job done right.
WHAT IS A FUSE SIZE AND WHAT DOES IT DO?
Fuse size is a measurement that indicates the diameter of the core wire of the fuse. This measurement is important because it helps to determine the amperage rating of the fuse. In other words, it tells you how much current the fuse can safely handle before it blows.
Fuses are designed to protect electrical circuits fr being overloaded by too much current. When too much current flows through a circuit, it creates heat, which can damage components and start fires.
By blowing, the fuse breaks the circuit and prevents this dangerous condition from occurring. So, if you’re ever wondering why a particular fuse blew, just remember: it’s all about the size.
DIFFERENT TYPES OF FUSES AND THEIR USES?
There are three main types of fuses: fast-blow, slow-blow, and time-delay.
FAST-BLOW
Fast-blow fuses are designed to blow as quickly as possible when too much current flows through them. They’re typically used in circuits with high inrush currents, such as those created by motors or transformers.
SLOW-BLOW FUSES
Slow-blow fuses, on the other hand, are designed to tolerate short periods of high current without blowing. This makes them ideal for use in circuits with devices that draw large currents when they first turn on, such as power supplies.
TIME-DELAY FUSES
Time-delay fuses are a combination of the two: they can handle high inrush currents, but they also have a delayed reaction time, so they won’t blow as quickly as a fast-blow fuse would. This makes them ideal for use in circuits with both high inrush and sustained high currents, such as those created by large audio amplifiers.
Now let’s find the fuse size. You can find fuse size with 2 methods:
- Amp Power rating & alternator voltage rating equation
- With Wire Gauge knowledge
1. WHAT SIZE OF FUSE DO I NEED FOR MY CAR AMP? P/V EQUATION
It is not possible to buy a fuse online and put it in your vehicle. Doing that will cause more harm than good. You can find the rating of the car amplifier in the given specification sheet. We should use a suitable size for our circuit according to the rating.
It will be listed on your amplifier, if you have not found then we’ll have to find it ourselves using a simple equation:
The general formula for calculating the fuse size:
Fuse size (in amps) = P/V
where P is the Max Power rating of the amplifier and V is the alternator voltage rating.
For example, if we have a 14.4 system voltage and a 100W max power of the amplifier. Then the value of P will be 100 and the value of V will be 14.4. But if you have connected multiple amplifiers, the value of P will be the sum of their power ratings.
The efficiency factor will need to be considered before we put the Power value into the main equation.
You will need to carry out this calculation by putting this into the main equation, we’ll get 100/14.4=6.94 A.
There’s no 6.94A car fuse, however. So we’ll use one that’s closest to this value, which is 7 A.
2. CAR AMP FUSE SIZE WITH WIRE GAUGE CHART
By the American Wire gauge input, they are made for, some fuses are classified further. AWG is a unit-less US standard measure to indicate the diameter of electrical conductors.
The inverse relation between the AWG rating and the diameter of the electric conductor is found in the rating., i.e., The lower the diameter is if the AWG is higher. A wire with a rating of 12 AWG will be thicker than a wire with a rating of 14 AWG.
| S.NO | Fuse Size | American Wire Gauge (AWG) | Amp Max Power Rating | | 1 | 7.5 Amps | 80 Amps | 105W | | 2 | 15 Amps | 14 AWG | 210W | | 3 | 20 Amps | 12 AWG | 240W | | 4 | 30 Amps | 10 AWG | 420W | | 5 | 50 Amps | 8 AWG | 700W | | 6 | 80 Amps | 6 AWG | 1120W | | 7 | 80 Amps | 4 AWG | 1200W | | 8 | 100 Amps | 4 AWG | 1500W | | 9 | 140 Amps | 4 to 00 AWG | 2000W | | 10 | 200 Amps | 4 to00 AWG | 3000W |
HOW TO DETERMINE FUSE SIZE?
If you see a fuse with the number “7” printed on it, you know it’s 7A, not 7W. This is also referred to as the size of the transformer. The side of your fuse will usually have the rating on it.
Fuses are not rated for power like amplifiers, they have an amperage rating.
HOW TO SELECT THE RIGHT FUSE FOR YOUR CAR AMP?
When choosing a fuse for your car amp, you need to consider the following:
- Size:
One of the most important factors to consider when choosing a fuse is the size. Fuses are available in different sizes, and you need to make sure that you choose a fuse that is big enough to handle the current that will flow through it.
If you choose a fuse that is too small, it will blow often and may damage your equipment. On the other hand, if you choose a fuse that is too big, it might not blow when there is an overload of electricity, which could lead to a fire.
- Rating:
Another important factor to consider when choosing a fuse is the rating. Fuses are rated in amps, and you need to make sure that you choose a fuse that is rated for the amount of current that will flow through it. If you choose a fuse that is not properly rated, it could overheat and cause a fire.
- Type:
There are two main types of fuses: slow-blow and fast-blow. Slow-blow fuses are designed to handle small surges of current, while fast-blow fuses are designed to blow as quickly as possible when there is an overload of electricity.
You need to choose the right type of fuse for your car amp depending on the amount of current that will flow through it. If you’re not sure which type of fuse to choose, you can always consult with an experienced electrician.
- Material:
Fuses are made from different materials, and each material has its own advantages and disadvantages. The most common type of fuse is made from metal, but there are also fuses made from ceramic and glass.
Metal fuses are the most common type of fuse, and they are usually made from copper or aluminium. Metal fuses are less likely to break than ceramic or glass fuses, but they are also more expensive.
Ceramic fuses are made from a type of clay that is fired in a kiln. Ceramic fuses are more fragile than metal fuses, but they are also cheaper.
Glass fuses are made from, you guessed it, glass. Glass fuses are the most fragile type of fuse, but they are also the least expensive.
- Price:
Of course, price is always a factor to consider when choosing any product. Fuses are no different, and you can find fuses that range in price from a few cents to a few dollars.
The price of the fuse will usually depend on the size, rating, type, and material. So, if you’re on a budget, you may want to choose a smaller fuse or a less expensive material.
- Brand:
There are many different brands of fuses on the market, and some brands are better than others. When choosing a fuse, you may want to consider the brand, especially if you’re looking for a specific type or material.
Some of the most popular brands of fuses include Bussmann, Littelfuse, and Cooper Bussmann.
- Warranty:
Finally, you may want to consider the warranty when choosing a fuse. Some manufacturers offer warranties on their fuses, and this can be helpful if you have any problems with the fuse later on.
However, keep in mind that most fuses do not come with a warranty, so this may not be a deciding factor for you.
HOW TO INSTALL A FUSE IN YOUR CAR AMP SYSTEM?
Installing a fuse in your car amp system is a simple process that only takes a few minutes. First, you’ll need to identify the positive and negative terminals of your amp.
The positive terminal is usually marked with a red or + symbol, while the negative terminal is usually marked with a black or – symbol. Once you’ve located these terminals, you can begin installing the fuse.
Start by attaching the red wire of the fuse to the positive terminal of the amp, and then attach the black wire of the fuse to the negative terminal of the amp.
Once both wires are attached, you can screw the fuse into place and secure it with a nut or bolt. Finally, turn on your amp and check to make sure that the fuse is working properly.
If everything is working correctly, you should see a small spark when you first turn on the amp. This spark is normal and indicates that the fuse is doing its job.
TIPS FOR KEEPING YOUR CAR AMP SYSTEM RUNNING SAFELY AND EFFECTIVELY?
There are a few things you can do to keep your car amp system running safely and effectively:
- Check the fuse regularly to make sure it’s not blown.
- If your system has an external power supply, make sure it’s properly grounded.
- If you’re using an aftermarket stereo, check the wiring to make sure it’s not damaged.
- Make sure all of the connections in your system are secure and free of corrosion.
- Keep an eye on the temperature of your amp. If it starts to get too hot, turn off the amp and let it cool down.
By following these tips, you can help ensure that your car amp system runs safely and effectively for years to come.
INSTALLING A CAR AMP – TIPS AND TRICKS
Now that you know how to select the right fuse for your car amp, it’s time to install it. Here are a few tips and tricks to help you with the installation:
- Read the instructions:
Before you start the installation, it’s important that you read the instructions that came with your car amp. These instructions will contain important information about the installation process, and they can help you avoid any mistakes.
- Have all the tools you need:
Make sure that you have all the tools you need before you start the installation. This includes a screwdriver, wire stripper, and pliers.
- Do a test fit:
Before you actually install the fuse, do a test fit to make sure that it will fit in the slot properly. Once you’re sure that it fits, you can proceed with the installation.
- Install the fuse:
Now, it’s time to install the fuse. First, remove the old fuse from the fuse box. Then, insert the new fuse into the slot and tighten it down with the screwdriver.
- Connect the wires:
The next step is to connect the wires to the fuse. First, strip the insulation off of the end of the wire. Then, twist the wire around the terminal on the fuse. Finally, tighten down the terminal with a screwdriver or pliers.
- Replace the fuse box cover:
Once you’ve connected the wires, replace the fuse box cover. This will help protect the fuses from any dirt or debris.
- Test the system:
Finally, it’s time to test the system. Turn on your car and then turn on the car amp. If everything is working properly, you should hear music coming from the speakers.
If you don’t hear any music, double check all the connections to make sure that they are tight. You may also want to check the fuse to make sure that it is the correct size and rating.
Installing a car amp can be a bit daunting, but following these tips can help make the process a lot easier. Just take your time and be careful, and you should be able to get the job done without any problems.
There are a lot of frequently asked questions about the size of the Amp fuse.
FAQS ABOUT CAR AMPS AND FUSES
Q:1 How do I know what size fuse for my amp?
A: It is very simple like 123. Just use this main equation(P/V):
Fuse Size=Max Amp Power Rating(P)/V for alternator voltage rating.
Q:2 What size fuse do I need for a 600-watt amp?
A: 40A
Fuse Size=P/V, 600/14.4=41.66
You’ll need an almost 40A fuse for your 600W amplifier if you have an alternator that provides 14.4 volts.
Q:3 What size fuse do I need for a 900-watt amp?
A: 60A
Fuse Size=P/V, 900/14.4=62.5
You’ll need an almost 60A fuse for your 900W amplifier if you have an alternator that provides 14.4 volts.
Q:4 What size fuse do I need for a 1200-watt amp?
A: 80A
Fuse Size=P/V, 1200/14.4=83.33
You’ll need an almost 80A fuse for your 1200W amplifier if you have an alternator that provides 14.4 volts.
Q:5 What size fuse do I need for a 1500-watt amp?
A: 100A
Fuse Size=P/V, 1500/14.4=104.16
You’ll need an almost 100A fuse for your 1500W amplifier if you have an alternator that provides 14.4 volts.
Q:6 What size fuse do I need for a 2000-watt amp?
A: 140A
Fuse Size=P/V, 2000/14.4=138.88
You’ll need a 140A fuse for your 2000W amplifier if you have an alternator that provides 14.4 volts.
Q:7 what size fuse do i need for a 3000 watt amp?
A: 210A or 200A
Fuse Size=P/V, 300/14.4=208.33
You’ll need an almost 60A fuse for your 3000W amplifier if you have an alternator that provides 14.4 volts.
Q:8 What happens if you use too big of a fuse?
A: If you use too big of a fuse, it could cause your amp to overheat and potentially catch fire.
Q:9 What happens if the fuse is too small?
A: If the fuse is too small, it will blow and your amp will be disabled.
WRAP UP!
That’s it! You now know everything you need to about what Size of fuse do you need for your car amp and selecting the right fuse for your car amp. Be sure to check out our other blog posts for more helpful tips and tricks on installing a car amp.
And as always, if you have any questions or need help with anything, don’t hesitate to reach out to us. We love hearing from our readers and we’re always happy to help. Thanks for reading!