When a fuse is found to be open and the problem due to which it happened was resolved, the next step is to replace the fuse. Before replacing the fuse, one must conform whether replacement is of proper type and fits correctly.
Proper Type of Replacement Fuse
In order to check whether a fuse is of the proper type; look at the technical manual for the equipment. The parts list will guide you the proper fuse identification for a replacement fuse. Get the exact fuse specified, if possible, and check the identification number of the replacement fuse against the parts list. Substitute fuses must have the same physical dimensions as the specified fuse.
Proper Fit of Replacement Fuses
After getting a proper replacement fuse, one must be certain that the fuse will fit correctly in the fuse holder. If the fuse holder is corroded, the fuse will not fit properly. In addition, the corrosion can cause increased resistance or heating. Clean the corroded terminals with fine sandpaper so that all corrosion is removed.
Given below are some of the minimum safety precautions for replacing fuses:
- Be sure the power is off in the circuit and the circuit is discharged before replacing a fuse.
- Use an identical replacement fuse if possible.
- Remove any corrosion from the fuse holder before replacing the fuse.
- Be certain the fuse properly fits the fuse holder.
