According to NEC, which section requires that electrical equipment must be used according to the manufacturer's instructions?

The correct choice emphasizes the importance of adhering to the manufacturer's instructions when using electrical equipment. Section 110.3(B) of the National Electrical Code (NEC) specifically mandates that installed electrical equipment must be used in accordance with the manufacturer's instructions. This requirement is crucial because proper compliance ensures the safety, reliability, and functionality of electrical installations.

When equipment is used as intended by the manufacturer, it helps to prevent hazards such as electrical failures, overheating, and other potential dangers that may arise from improper use. The section serves as a foundational principle in electrical safety, reinforcing the idea that following guidelines set forth by manufacturers is essential for both compliance with the code and the general welfare of all users.

Other sections, while important, do not specifically address the usage of equipment according to manufacturers' instructions. Understanding and applying the guidelines set in Section 110.3(B) promotes a culture of safety and responsibility within the electrical industry.