Which code governs electrical wiring and equipment installations in general?

• A. NFPA 70 National Electrical Code
• B. OSHA 1910
• C. NFPA 70E
• D. NFPA 101

Answer: (A)

The main idea here is identifying the standard that sets the rules for how electrical systems are installed. The National Electrical Code, published as NFPA 70, is the primary code for electrical wiring and equipment installations. It specifies wiring methods, conductor sizes, overcurrent protection, grounding, and general installation requirements, and it’s the baseline standard that jurisdictions adopt to ensure safe electrical work in buildings and facilities.

Other options focus on safety practices rather than installation rules: OSHA 1910 covers general workplace safety, NFPA 70E deals with electrical safety in the workplace and worker protection around energized equipment, and NFPA 101 addresses life-safety aspects like means of egress and fire safety. Since the question asks for the code that governs how electrical wiring and equipment are installed in general, NFPA 70—the National Electrical Code—is the correct choice.