What does NEC require regarding installation practices as stated in Article 110.31?

The requirement that all installations be completed by qualified personnel is grounded in ensuring safety, reliability, and compliance with electrical codes. Article 110.31 emphasizes the importance of having electricians or technicians who possess the necessary education, skills, and experience to perform electrical work correctly. This is crucial because electrical installations involve complex systems that must adhere to safety standards and industry practices to prevent hazards such as electrical shock, fire, and equipment failure.

By ensuring that only qualified personnel handle installations, the NEC aims to minimize risks associated with electrical work. This also aligns with the notion that proper installation is vital for the continued functionality and safety of electrical systems, which are integral to daily operations in homes, commercial buildings, and industrial settings.