Working with electricity can be dangerous unless you adhere strictly to certain rules.  CAUTION: NEVER WORK ON ANY LIVE CIRCUIT, FIXTURE, RECEPTACLE OR SWITCH.  Please adhere to the following rules whenever working with electricity:

• Always shut off power at the main disconnect before changing a fuse.
• Always shut off power to the circuit before repairing or replacing a switch, receptacle or fixture.
• Always tape over the main switch, empty fuse socket or circuit breaker when you are working.  Leave a note there so no one will accidentally turn on the electricity.  Keep any fuses you’ve removed in your pocket.
• Always check that the circuit is actually dead before you begin working on it.  Use a circuit tester or voltammeter.
• Always unplug any appliance or lamp before repairing it.