If the fuse is used in a circuit breaker:

    Pull out the circuit breaker.

    Replace the fuse link.

    Click the circuit breaker back into place.

If the fuses are individually screwed in:

    Unscrew the screw cap.

    Replace the fuse link.

    Screw the screw cap back on.

    Flip open the fuse holder.

    Open the fuse holder.

    Replace the fuse link.

    Close the fuse holder.

    Click the fuse holder back into place.

    Detach the fuse holder from the mount on the transformer.

    Replace the fuse link.

    Reinsert the fuse holder.