In NEC Article 300.21, which type of damage are conductors specifically protected against?

In NEC Article 300.21, the focus is on protecting conductors from mechanical damage. This provision emphasizes the importance of safeguarding electrical conductors from physical impacts or stress that could compromise their integrity and functionality. Mechanical damage can arise from various sources, including installation practices, environmental conditions, or accidental contact with tools and equipment.

When conductors are not adequately protected from mechanical damage, there is an increased risk of insulation failure, which can lead to short circuits, power outages, or potential fire hazards. As such, the NEC provides guidelines to ensure that conductors are installed and maintained in a way that minimizes the risk of such damage. Proper protective measures include using conduit, protective covers, or suitable routing to ensure the safety and reliability of electrical installations.