How does the code address documentation for inspections?

The requirement for all inspections to be documented to maintain accountability is a crucial aspect of the National Electrical Code (NEC). This mandate ensures that there is a clear and traceable record of inspections conducted on electrical systems and installations. Documentation serves several important functions: it provides a reference for future inspections, aids in compliance with safety standards, and helps to verify that the work performed meets all necessary regulations and requirements.

By enforcing thorough documentation, the NEC facilitates a framework through which stakeholders can hold parties accountable for the work done, ensuring that installations are safe, reliable, and up to code. This approach minimizes the risk of oversights and reinforces a culture of safety within electrical work.

The other options lack the necessary rigor and structure emphasized by the code. Verbal confirmations alone do not provide a reliable record, random sampling does not sufficiently ensure comprehensive oversight, and making documentation optional could lead to inconsistencies and gaps in accountability. Therefore, the requirement for documented inspections is vital to uphold the integrity and safety of electrical installations.