NFPA 1:11.1 Electrical Fire Safety
11.1.5.2
Multiplug adapters shall not be used as a substitute for permanent wiring or receptacles.
11.1.6.2
The relocatable power taps shall be directly connected to a permanently installed receptacle.
11.1.6.3
Relocatable power tap cords shall not extend through walls, ceilings, or floors; under doors or floor coverings; or be subject to environmental or physical damage.
11.1.7.1
Extension cords shall be plugged directly into an approved receptacle, power tap, or multiplug adapter and shall, except for approved multiplug extension cords, serve only one portable appliance.
11.1.7.3
The extension cords shall be maintained in good condition without splices, deterioration, or damage.
11.1.7.5
Extension cords and flexible cords shall not be affixed to structures; extend through walls, ceilings, or floors, or under doors or floor coverings; or be subject to environmental or physical damage.
11.1.7.6
Extension cords shall not be used as a substitute for permanent wiring.
