Disconnect appliances from the power supply before replacing a fuse. This can help prevent a power surge or short circuit.
Open the fuse box for the equipment that requires a new Bussmann fuse. On cars and trucks, the fuse box usually is located below the dashboard on the driver's side. For appliances and electronic components, consult the owner's manual to locate the fuse box, or remove the cabinet or housing on the equipment to locate the fuses. Bussmann fuses come in a variety of sizes, with different amperage ratings, but all resemble a cylinder with a metal cap on each end. The fuses can range in size from slightly smaller than a pencil diameter to the length and size of a hot dog.
Use an insulated fuse puller to remove the blown fuse by grasping the fuse cylinder in the center and pulling straight out. Do not twist or turn the fuse. Do not touch the ends of the fuse while it is installed in the two metal brackets.
Place a replacement Bussmann fuse in the fuse puller by opening the puller handles and inserting a fuse in the half-circle compartment, then closing the handles together like pliers.
Push the fuse straight down into the metal brackets that hold the fuse caps securely on both sides.
Close the fuse box and check the circuit by turning on the appliance.