What uses of extension cords are prohibited?

Improper use of overloaded, unapproved extension cords can present a serious fire safety hazard in the workplace. As such, inappropriate use of extension cords would include:

• Using as permanent wiring,
• Using unapproved extension cords,
• Daisy chaining, and
• Using one surge protector/power strip to power another.

Extension cords may only be used in continuous lengths without splice or tap. Hard-service cord and junior hard-service cord No. 14 and larger may be repaired if spliced so that the splice retains the insulation, outer sheath properties, and usage characteristics of the cord being spliced.