Which statement best describes the purpose of NFPA 70B?

Which statement best describes the purpose of NFPA 70B?

• A. Electrical safety guidelines for arc flash
• B. Electrical installation standards for power distribution
• C. Electrical equipment preventive maintenance program, including inspection, testing, and maintenance to prevent failures
• D. Guidelines for fire suppression systems

Answer: (C)

NFPA 70B focuses on electrical equipment maintenance. It provides guidance for establishing a preventive maintenance program that includes regular inspections, testing, and maintenance activities to prevent equipment failures and extend service life. This makes it the best description because it specifically targets ongoing maintenance practices aimed at reliability and safety, rather than installation standards or safety guidelines for arc flash, or guidelines for fire suppression systems. For example, it covers visual inspections, infrared thermography to spot overheating, insulation testing, lubrication and tightening of connections, and keeping documented maintenance records to plan future work. Arc flash safety is addressed by NFPA 70E, installation standards by NFPA 70, and fire suppression-related guidelines by NFPA 25 or NFPA 13, not by NFPA 70B.

NFPA 70B focuses on electrical equipment maintenance. It provides guidance for establishing a preventive maintenance program that includes regular inspections, testing, and maintenance activities to prevent equipment failures and extend service life. This makes it the best description because it specifically targets ongoing maintenance practices aimed at reliability and safety, rather than installation standards or safety guidelines for arc flash, or guidelines for fire suppression systems. For example, it covers visual inspections, infrared thermography to spot overheating, insulation testing, lubrication and tightening of connections, and keeping documented maintenance records to plan future work. Arc flash safety is addressed by NFPA 70E, installation standards by NFPA 70, and fire suppression-related guidelines by NFPA 25 or NFPA 13, not by NFPA 70B.