Which standard regulates electrical wiring, controls, and connections to equipment and appliances?

The standard that regulates electrical wiring, controls, and connections to equipment and appliances is NFPA 70, which is more commonly known as the National Electrical Code (NEC). This code provides comprehensive guidelines to ensure safe electrical installations and minimize hazards related to electrical wiring, equipment, and appliances across various settings, including residential, commercial, and industrial environments.

The NEC is essential as it covers the rules outlining the safe installation and operation of electrical systems, ensuring that electrical work is performed to an accepted standard of safety. Compliance with NFPA 70 is mandated for electrical installations in many jurisdictions, making it a cornerstone of electrical safety codes.

In contrast, NEC 100 refers to a specific section of the NEC that contains definitions, while IEEE 802.3 pertains to standards for Ethernet networking, and IEC 61000 deals with electromagnetic compatibility. None of these standards focus directly on the broader regulations governing electrical wiring and connections, making NFPA 70 the correct choice for the question.