What is a 25 A fuse used for?

Bussman’s MAXI (MAX) Automotive Blade Fuses with 25 Amp Rating (Gray) are designed to protect circuits in the wiring harness – usually found under the hood, in a fuse panel, or supplementary panel near the battery and are ideal for use with aftermarket accessories.

Does inline fuse go on positive or negative?

The fuses are placed in the positive lines from the battery and close to the battery. If a fault occurs on the line between the fuse and the load the fuse blows and current flow stops. A ground fault on the return line is unlikely to cause any problems as there is no significant voltage on it.

What is a Littelfuse type 257?

257 Series ATO Developed by Littelfuse for the automotive industry, the ATOF® fuse has become the original equipment circuit protection standard for foreign and domestic automobiles and trucks. Readily identifiable and easily replaced, Electrical Characteristics.

Are all 20 amp fuses the same?

Car fuses are color coded by amp rating. For example, a standard blue fuse has a 15-amp rating, yellow is 20 amps and green is 30. Note: If your new fuse blows soon after installing it, you could have problems in that circuit.

What color is 15 amp fuse?

Color coding

Color Continuous ampere (=rated current) Continuous fusing ampere
Green on black 5 10
Red on brown 6 12
Light brown 7.5 15
Pink 12.5 25

Can you tell if a fuse is blown by looking at it?

Look at the fuse wire. If there is a visible gap in the wire or a dark or metallic smear inside the glass then the fuse is blown and needs to be replaced. A reading of OL (Over Limit) definitely means a blown fuse. If the fuse is blown, replace the fuse with one that is exactly the same (see panel).