Article 640 deals with which type of equipment?

Article 640 of the National Electrical Code (NEC) specifically addresses the installation and safety requirements for audio signal processing, amplification, and reproduction equipment. This includes equipment such as amplifiers, mixers, and sound systems that are used in various settings for music and sound reinforcement.

Understanding that Article 640 is tailored towards audio equipment is essential for ensuring that installations comply with electrical code requirements, which are designed to safeguard against potential hazards like electrical shock and fire. It provides guidelines pertaining to wiring methods, equipment ratings, and overcurrent protection, all of which are critical for maintaining a safe environment when using audio equipment.

The other options, while related to specialized electrical equipment, are governed by different NEC articles. For instance, induction and dielectric heating equipment falls under another section that addresses specific considerations for high-frequency applications, while sensitive electronic equipment has its own requirements regarding electromagnetic interference and compatibility. X-ray equipment also has distinct regulations aimed at health and safety standards concerning radiation control. Therefore, recognizing that Article 640 is dedicated to audio equipment is crucial for professionals working in fields involving sound amplification and distribution.