What you need to know
Electrical Safety Basics
- Don't work with exposed conductors carrying 50 volts or more.
- Make sure electrical equipment is properly connected, grounded and in good working order.
- Extension cords may not be used as permanent wiring and should be removed after temporary use for an activity or event.
- Surge suppressors with built-in circuit breakers may be used long-term and are available with three, six and 15 foot-long cords.
- High amperage equipment such as space heaters, portable air conditioners and other equipment must be plugged directly into permanent wall receptacles.
- Do not access, use or alter any building’s electrical service, including circuit breaker panels, unless you are specifically qualified and authorized to do so.
- Wet environments can increase the risk of an electrical shock.
For more information on electrical cords, including extension cords and power taps, see the Extension Cords, Surge Suppressors and Power Strips Focus Sheet.
Housekeeping and Maintenance
- Maintain at least 30 inches of clearance in front of electrical panels to ensure a safe environment for facilities workers.
- Make sure that all junction boxes are covered.