What limitation does Article 225 impose on the use of extension cords for outdoor purposes?

What limitation does Article 225 impose on the use of extension cords for outdoor purposes?

• A. They must be longer than 50 feet
• B. They cannot be used as permanent wiring
• C. They must be rated for indoor use only
• D. They should be used only for lighting

Answer: (B)

Article 225 of the National Electrical Code (NEC) addresses the use of extension cords and imposes specific limitations to ensure safety in electrical installations. The correct choice states that extension cords cannot be used as permanent wiring. This is fundamental because extension cords are designed for temporary use, allowing for the connection of portable devices, tools, or equipment. Using them as permanent wiring undermines electrical safety standards. Permanently installed wiring must adhere to more stringent installation requirements and safety codes, including route, protection, and accessibility considerations which extension cords are not designed to fulfill. Therefore, this limitation helps prevent potential hazards such as overheating, tripping, and electrical fires that could arise from misusing temporary cords in a permanent manner. Understanding this distinction is crucial for safe electrical practices in residential and commercial installations.

Article 225 of the National Electrical Code (NEC) addresses the use of extension cords and imposes specific limitations to ensure safety in electrical installations. The correct choice states that extension cords cannot be used as permanent wiring. This is fundamental because extension cords are designed for temporary use, allowing for the connection of portable devices, tools, or equipment.

Using them as permanent wiring undermines electrical safety standards. Permanently installed wiring must adhere to more stringent installation requirements and safety codes, including route, protection, and accessibility considerations which extension cords are not designed to fulfill.

Therefore, this limitation helps prevent potential hazards such as overheating, tripping, and electrical fires that could arise from misusing temporary cords in a permanent manner. Understanding this distinction is crucial for safe electrical practices in residential and commercial installations.