Replace a blown fuse.

Replacement should include

• inspecting the fuse box for a blown fuse
• turning off the main power sources after locating the blown fuse
• unscrewing the blown fuse and removing it from the box
• screwing in or plugging the new fuse into the bo
• turning on the power. 

Process/Skill Questions:

• What are the relevant safety precautions/procedures for replacing a blown fuse?
• What are some conditions that may account for fuses blowing?
• What tools are used for replacing a fuse?