Which aspect is covered by the National Electrical Code?

The National Electrical Code (NEC) covers a broad range of topics related to electrical installations, primarily focusing on the safety and proper installation of electrical systems. The correct choice highlights that the NEC addresses the installation and removal of electrical conductors and equipment, ensuring that these processes meet safety standards to protect users and property. This comprehensive coverage includes everything from wiring practices to the installation of fixtures and the grounding of systems, making it essential for maintaining safe electrical systems across various types of applications, not limited to a specific context like only residential or outdoor installations.

The other aspects mentioned in the incorrect choices are not encompassed by the NEC. For example, the NEC does not regulate electrical pricing, which is a matter of economics and utility regulation, and it also does not limit its guidelines solely to residential systems or outdoor lighting installations. Instead, it provides a robust framework that spans all types of electrical work, reinforcing safety practices across the electrical industry.