1. Keep all electrical equipment away protected from water and dampness. Use ground-fault circuit interrupter (GFCI) protected circuits in damp and wet locations.
2. Never use electrical equipment if your hands are moist, even if it's from perspiration, as this can mean the difference between a light shock and a fatal shock.
3. Never use water to put out an electrical fire using water can result in a fatal shock. Use a Class C fire extinguisher designed for electrical fires.
4. Always inspect the area you're working in for electrical hazards.
5. Do not overload electrical circuits.
6. Ensure equipment is properly grounded.
7. Check electrical cords for fraying and other signs of wear. Remove frayed or damaged electrical cords immediately.
8. Be sure to follow all lockout / tagout all procedures or completely de-energize before servicing or repairing any equipment.
9. If a fellow employee receives a shock, do not touch or pull the victim away as you will likely be shocked also. If it is safe to do so, disconnect the power source that caused shock and call for emergency medical services (EMS / 911). If it is safe to do so, use nonconductive object, such as a wood broom handle, to separate the victim from the source of shock. Once the victim is safely separated from the electrical source, begin CPR immediately (if trained) and continue until EMS arrives.
10. Never splice or patch electrical cords. Cords should be replaced or shortened by a qualified electrician.
11. When disconnecting electrical equipment, pull from the plug rather than the cord.
12. Keep extension cords off the floor when possible. If it is absolutely necessary to put such cords on the floor, use approved temporary floor covers to prevent tripping on or damage to the cord.
13. If portable electrical tools are not double-insulated and labeled as such, make sure they are equipped with a 3wire grounded plug. Do not cut off the ground connection prong.
14. If the ground prong has been removed, do not use the equipment or tool until the plug has been replaced.
15. Do not use circuit breakers to turn lights and other equipment on and off unless they are “switch rated” circuit breakers.
16. Do not tape or jam circuit breakers to prevent tripping.
17. Do not replace fuses with fuses with higher ampacity ratings or metal slugs.