Turn Off the Main Circuit Breaker
Always switch off the main circuit breaker before installing, repairing, or inspecting electrical wiring and equipment.
Overview
Electrical safety is one of the most important parts of installing and maintaining a computer laboratory. Following proper safety practices helps prevent electrical accidents, equipment damage, and personal injury while working with electrical systems.
Important Safety Practices
Use Insulated Tools
Use insulated screwdrivers, pliers, and other electrical tools to reduce the risk of electric shock.
Keep Hands Dry
Never handle electrical equipment with wet hands or while standing on a wet surface.
Check All Wiring
Inspect all electrical wires and terminals before restoring power. Replace damaged wires immediately.
Avoid Overloading Outlets
Do not connect too many devices to a single electrical outlet or UPS. Overloading may cause overheating and equipment damage.
Keep the Work Area Organized
Arrange cables neatly and remove unnecessary objects around the electrical panel and work area to prevent accidents.
Ask for Assistance
If you are unsure about an electrical connection or procedure, consult your instructor before continuing.
Safety Reminders
- Always turn off the main circuit breaker before working on electrical systems.
- Use insulated tools when handling electrical equipment.
- Keep hands and the work area dry.
- Inspect wires, outlets, and breakers before restoring power.
- Do not overload outlets, extension cords, or UPS units.
- Replace damaged electrical equipment immediately.
- Keep electrical panels free from obstructions.
- Report unsafe conditions to your instructor immediately.
- Follow all laboratory safety rules during electrical installation activities.