# If a fuse repeatedly blows, it should be replaced by a fuse of one step higher rating

## Homework Statement

If a fuse repeatedly blows, it should be replaced by a fuse of one step higher rating.
true or false?

## The Attempt at a Solution

this is because there is too much current in the circuit and it does need to be replace with one of higher capacity? then true?

Thanks!

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turbo
Gold Member

First, find out why a properly-sized fuse keeps blowing. The fuse is there to protect the circuit, and simply substituting that fuse with higher and higher rate ones subverts that protection.

that makes a lot of sence, but I still belive that the question is too generic, because I'm not sure if it is because the fuse is originally too small or there is a problem with the circuit that causes the blowing.

thanks anyway turbo

turbo
Gold Member

You need to look at the entire circuit, Curious. Simply subbing in bigger and bigger-capacity fuses is not a good idea, unless you want to sacrifice the circuit in question. Do you have access to a decent multimeter, and can you evaluate circuits?

well is a question for my homework, so all i have is this:

If a fuse repeatedly blows, it should be replaced by a fuse of one step higher rating.
true or false?

I don't have further information

SammyS
Staff Emeritus
Homework Helper
Gold Member

well is a question for my homework, so all i have is this:

If a fuse repeatedly blows, it should be replaced by a fuse of one step higher rating.
true or false?

I don't have further information
Why is this bad practice? (replacing a fuse by one with 1 step higher rating)

You're likely to start an electrical fire.

turbo
Gold Member

well is a question for my homework, so all i have is this:

If a fuse repeatedly blows, it should be replaced by a fuse of one step higher rating.
true or false?

I don't have further information
I gave you the correct answer. You can't keep jumping fuse values without finding out why the fuse is blowing. You can cause trouble that way.

thanks to both of you :D