NEC Article 440, Part V covers

NEC Article 440, Part V covers

• A. Safety grounding requirements
• B. Receptacle ratings
• C. Requirements for motor compressor controllers
• D. Lighting branch circuits

Answer: (C)

Part V of Article 440 is dedicated to motor-compressor controllers used in air-conditioning and refrigeration equipment. This section addresses how the controllers start, run, and protect the compressor motors, including the types of controllers allowed, wiring requirements, control circuits, and overload protection and coordination with the power supply. The goal is to ensure safe operation and proper protection for the equipment as it handles starting and stopping under load. Safety grounding provisions, receptacle ratings, and lighting branch circuits are handled in other parts of the NEC, so they don’t belong to this portion.

Part V of Article 440 is dedicated to motor-compressor controllers used in air-conditioning and refrigeration equipment. This section addresses how the controllers start, run, and protect the compressor motors, including the types of controllers allowed, wiring requirements, control circuits, and overload protection and coordination with the power supply. The goal is to ensure safe operation and proper protection for the equipment as it handles starting and stopping under load. Safety grounding provisions, receptacle ratings, and lighting branch circuits are handled in other parts of the NEC, so they don’t belong to this portion.