Electrical Cord and Power Strip Safety

Improper use of easily overloaded, unapproved extension cords can present a serious fire safety hazard in the workplace. According to the National Fire Protection Association, electrical distribution equipment, such as extension cords, was the second leading cause of fire deaths in the U.S. between 1994 and 1998. The most common cause of extension-cord fires is improper use and/or overloading, especially when cords have multiple outlets. Most extension cords are only rated for a maximum of ten amps or 1200 watts. Overloading can occur when multiple devices are plugged into one cord or when cords are “daisy-chained” (plugging multiple extension cords together). 

The use of unapproved extension cords violates both OSHA and National Fire Protection Association codes. Approved extension cords are only allowed in the workplace as temporary wiring for no more than 90 days.

Inappropriate Use of Extension Cords

• Using as permanent wiring
• Using unapproved extension cords
• Overloading power capabilities of the cord during temporary use
• Daisy chaining (plugging one extension cord into another and another, etc.) using one surge protector/power strip to power another

Basic Guidelines for the Appropriate Use of Extension Cords

• Cords must be properly approved (by Underwriters Laboratories, etc.)
• Approved cords must be for temporary use only (no more than 90 days)
• Extension cords may be used for remodeling and maintenance or repair of structures or equipment

Power Strips

1. They are intended to be directly connected to a permanently installed branch circuit receptacle.
2. They are not intended to be series-connected (daisy-chained) to other power strips or extension cords.
3. They are not intended to be permanently secured, nor to be used as a substitute for fixed wiring.
4. The cords of power strip taps are not intended to be routed through walls, windows, ceilings, floors, or similar openings.
5. Power strips must be properly approved. (by Underwriters Laboratories, etc.)