Which set of guidelines and regulations primarily governs electrical safety in construction?

The National Electrical Code (NEC) is a set of guidelines and regulations that primarily governs electrical safety in construction. It is instrumental in establishing safe practices for electrical installations and ensuring that all electrical work adheres to specified standards to prevent hazards like electrical shocks and fires.

The NEC outlines the requirements for safely installing and maintaining electrical systems in various environments, including construction sites. By adhering to the NEC, employers and workers can significantly reduce the risk of electrical accidents, ensuring both safety and compliance with legal requirements.

While the other choices refer to various safety standards and guidelines, they do not specifically address electrical safety in construction in the same comprehensive way that the NEC does. Other options may cover broader safety topics or different sectors but do not provide the specific electrical safety regulations that the NEC offers.