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The focus of NEC 90.1(C) is to emphasize best workmanship and safest installations in electrical work. This section is dedicated to ensuring that electrical installations are not only functional but also performed with high standards of quality and safety. By establishing these guidelines, the NEC aims to protect both the workers and the public, fostering practices that prioritize safety, reliability, and adherence to professional standards.

The emphasis on workmanship reflects the understanding that poor installation practices can lead to electrical hazards, malfunctioning systems, and inefficient energy usage. Therefore, achieving the best workmanship is fundamental in the electrical field to ensure that installations are durable and compliant with safety regulations.

This focus does not pertain specifically to grounding requirements, cable tray installations, or wire sizing, all of which are covered under different sections of the NEC. This differentiates the primary intent of NEC 90.1(C) from those other specific technical aspects, reinforcing the importance of a diligent and skilled approach to all electrical work.