What happen if fuse rating is too low?

If a fuse is used with a voltage rating lower than the circuit voltage, arc suppression will be impaired and, under some overcurrent conditions, the fuse may not clear the overcurrent safely.

Why you should not install a fuse with a higher fuse rating than specified?

If you employ the fuse of higher current rating than required, it will melt at a higher current through the circuit, which might lead to the burning of your other components in the circuit. The fuse is only a protection device which will burn/melt and break the circuit before affecting your main appliances.

How do you determine what size fuse you need?

B Calculate MINIMUM FUSE AMPERAGE by multiplying product amperage rating by 125\%. Minimum fuse amperage provides more protection for the wire but may result in nuisance blows. Example: 80A x 125\% = 100A. C Choose FUSE AMPERAGE near the middle of this range.

Is it OK to use a higher rated fuse?

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. A blown fuse indicates excessive current has entered the circuit.

What happens if you use a higher rated 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.

What happens if I use a higher rated fuse?

Is it better to have a higher or lower fuse?

It’s to ensure that in the event of a fault, the wiring doesn’t overheat and cause a fire. The fuse needs to be rated slightly higher than the maximum operating current of the protected device, so that the fuse won’t blow when the equipment is used.