How should conductors be handled to prevent damage during installation as stated in NEC Article 300.15?

The emphasis on handling conductors with care to avoid nicks or cuts is crucial for maintaining the integrity and safety of the electrical system. According to NEC Article 300.15, conductors should be installed in a manner that protects their insulation and overall structure. Damage to conductors, such as nicks or cuts, can compromise their insulation, which could lead to short circuits or electrical faults.

When conductors are handled carelessly—such as by dropping them, coiling them too tightly, or exposing them to extreme temperatures—they can suffer physical and performance degradation. Such practices can lead to long-term reliability issues and safety hazards. Therefore, the correct approach is to ensure that conductors are treated with diligence and respect throughout the installation process. This not only helps in ensuring compliance with the NEC but also enhances the overall safety and functionality of the electrical installation.