Which code revision year is commonly used as a reference for current electrical installations?

The latest published version by the National Electrical Code (NEC) is the commonly referenced code for current electrical installations because it incorporates the most up-to-date safety standards, technological advancements, and industry practices. Each revision of the NEC aims to address the changing needs within the electrical industry, including new materials, equipment, and installations. Utilizing the latest version ensures compliance with regulations designed to protect both workers and the general public from electrical hazards.

The NEC is revised on a three-year cycle, which means updates can occur frequently to address emerging trends or safety concerns in electrical practices. Relying on only older versions would mean potentially ignoring essential updates that could mitigate risks associated with outdated methods or equipment, thus compromising safety and functionality.