Which of the following is a key focus of the National Electrical Code (NEC)?

The National Electrical Code (NEC) primarily emphasizes ensuring safety in electrical installations. This is essential because it establishes the minimum standards for safe electrical design, installation, and inspection to protect people and property from electrical hazards. By adhering to the NEC, electricians and contractors help minimize the risks of electrical fires, shock, and other accidents that can arise from improper wiring or unsafe practices.

While aesthetic value, cost reduction, and marketing may be considerations in electrical work, they do not represent the core focus of the NEC. The primary goal is to provide guidelines that prioritize safety, thereby creating a safer environment for both consumers and workers in the electrical field.