• Temporary electrical power installations are allowed under limited circumstances.
• Flexible cords and cables may only be used under limited circumstances.

When is the use of temporary electrical power allowed?

Temporary electrical power and lighting installations of 600 volts, nominal, or less may be used only as follows:

• During and for remodeling, maintenance, or repair of buildings, structures, or equipment, and similar activities;
• For a period not to exceed 90 days for Christmas decorative lighting, carnivals, and similar purposes; and
• For experimental or development work, and during emergencies.

Temporary wiring shall be removed immediately upon completion of the project or purpose for which the wiring was installed.

Temporary electrical installations of more than 600 volts may be used only during periods of tests, experiments, emergencies, or construction-like activities.

When can flexible cords and cables be used?

Flexible cords and cables may only be used for:

• Pendants,
• Wiring of fixtures,
• Connection of portable lamps or appliances,
• Portable and mobile signs,
• Elevator cables,
• Wiring of cranes and hoists,
• Connection of stationary equipment to facilitate their frequent interchange,
• Prevention of the transmission of noise or vibration,
• Appliances where the fastening means and mechanical connections are designed to permit removal for maintenance and repair,
• Data processing cables approved as a part of the data processing system,
• Connection of moving parts, and
• Temporary wiring as permitted above.

Flexible cords and cables may not be used:

• As a substitute for the fixed wiring of a structure;
• Where they run through holes in walls, ceilings, or floors;
• Where they run through doorways, windows, or similar openings;
• Where they are attached to building surfaces;
• Where they are concealed behind building walls, ceilings, or floors; or
• Where they are installed in raceways.