The NEC requirements for fixed electric space-heating equipment are covered in which NEC article?

The NEC requirements for fixed electric space-heating equipment are covered in which NEC article?

• A. NEC Article 430
• B. NEC Article 424
• C. NEC Article 706
• D. NEC Article 422

Answer: (B)

Understanding where fixed electric space-heating equipment is addressed in the NEC helps you quickly identify the right rules. Fixed space heaters are treated as a unique category with its own installation and protection requirements, separate from other electrical equipment. That’s why NEC Article 424 is the correct reference. It is the section that specifically covers fixed electric space-heating equipment, laying out how these heaters must be installed, wired, protected, and controlled—things like when a disconnect is required, appropriate overcurrent protection, wiring methods, and required clearances. The other articles govern different things. NEC Article 430 deals with motors and motor controllers, not fixed space heaters. NEC Article 706 covers photovoltaic systems, which is unrelated to space heating. NEC Article 422 concerns appliances that are cord-and-plug connected, typically movable or portable appliances rather than permanently installed heating equipment.

Understanding where fixed electric space-heating equipment is addressed in the NEC helps you quickly identify the right rules. Fixed space heaters are treated as a unique category with its own installation and protection requirements, separate from other electrical equipment.

That’s why NEC Article 424 is the correct reference. It is the section that specifically covers fixed electric space-heating equipment, laying out how these heaters must be installed, wired, protected, and controlled—things like when a disconnect is required, appropriate overcurrent protection, wiring methods, and required clearances.

The other articles govern different things. NEC Article 430 deals with motors and motor controllers, not fixed space heaters. NEC Article 706 covers photovoltaic systems, which is unrelated to space heating. NEC Article 422 concerns appliances that are cord-and-plug connected, typically movable or portable appliances rather than permanently installed heating equipment.