Q&A

Can I replace a 7 amp fuse with a 5 amp fuse?

Can I replace a 7 amp fuse with a 5 amp fuse?

If you replace a fuse with a higher amp one it will work but create an unsafe circuit. It could cause a failure of the device burn it up, start a fire. The fuse is designed as a safety device. It should not only be the correct amperage but also the correct voltage and fast or slow blow.

Can I replace a higher amp fuse with a lower amp fuse?

One can use a smaller amp fuse temporarily, but one should not use a higher rated fuse temporarily, as it could cause worse electrical problems or be physically dangerous.

Can I put a bigger fuse in my amp?

Do not replace a blown fuse with one that has a higher amperage rating. The fuse has a specific amperage rating because it is intended to be the weak link in the circuit to protect the electrical components.

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What does mA mean in fuses?

The number and the A (may be mA) is the amp rating of the fuse. The L denotes that it is a low breaking capacity or glass fuse (H is High breaking capacity and is usually a ceramic package).

Can I use a 7.5 fuse instead of 5?

as long as it bigger than 5amps fuse u can use 7.5, 10 15 or 20 amps fuse your good. You go any higher and that higher amp is going to your component, possibly damaging it. If the component is rated for a higher amperage, then you are safe, and your fuse will protect your equipment.

Can I use a 3A fuse instead of 5A?

A 3A fuse is supposed to break the circuit for any current higher than 3 Amps. So replacing the fuse by a 5 A wire will allow more current than the rated value through the system and might damage appliances or trigger a higher protection scheme to act promoting larger blackout.

What happens if you put a bigger amp fuse?

If you use a fuse with the wrong amperage, the fuse won’t blow as intended, damaging the circuit and resulting in a much larger repair bill. Rather than risk blowing the circuit, take the car to a repair shop to determine what is causing the fuse to repeatedly blow.

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What happens if I put in a smaller fuse?

If the rating of the fuse is too low then it will frequently blow out even for a current value which is actually safer for the circuit. Such a fuse remains the circuit close and allows the current to flow beyond the limit permitted to the wiring or other components.

Does a bigger fuse mean more power?

The fuses are not regulating your power supply, instead, what they do, is to make sure there’s not TOO much power going to the amp, as anything over the amount your amp can handle, will destroy the fuse, instead of the more sensitive equipment inside.

What does mA stand for in current?

Milliampere
Milliampere, or milliamp: 1/1000 of an Ampere. Ampere is the basic unit for measuring electrical current.

Can you replace a 5 amp fuse with a 10 amp fuse?

Possibly yes. It is possible to short out a circuit by overdrawing more than 5 Amp by removing the 5 Amp fuse and putting in a 10 Amp fuse.

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What kind of Fuse is a 75 AMP?

The GMA .75 Amp Glass Tube Fuse provides fast-acting, low-breaking capacity response. This fuse is designed for use in a multitude of applications and features brass end caps. How can we improve our product information?

What size fuse do I need for a 150 watt motor?

Amperage is determined by W/V, so if the wattage is 150 and you are running it on 12 volts, it is 150/12. Or 12.5 amps, so I wouldn’t use over a 15 amp fuse. Watts ÷ volts x 1.2 = fuse size in amps required as a general rule.

What size fuse do I need for a 12 volt battery?

Assuming you’re powering it with 12V, you should use a 35A fuse. I am installing a 20 amp max marine waterproof 12VDC socket above my rear bumper for accessories such as a tire inflator (15 amps). The cable run from the battery is approximately 15 feet.

How do I determine the size of a fuse wire?

Find the items that you’re installing and their current requirements. Add the values and divide by 1000 to get your total current in Amps. You can use this value in the fuse size chart above to determine the minimum wire size required.

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