What type of insulation is required for open, individual overhead conductors within 10 feet of a building?

The requirement for thermoset or thermoplastic type insulation for open, individual overhead conductors within 10 feet of a building is grounded in the need for safety and compliance with electrical codes. Thermoset and thermoplastic insulations are specifically designed to endure varying environmental conditions, including exposure to UV radiation, moisture, and physical wear, which are crucial factors given their proximity to a building.

These insulation types offer reliable electrical insulation and meet the necessary fire-resistance properties outlined in the National Electrical Code (NEC). This ensures that the conductors can operate safely without risking damage or creating hazards such as fires or electrical shocks due to insulation breakdown.

By requiring such durable insulation, the standards aim to enhance the overall safety of the installation and protect both the structure and individuals in the vicinity from potential electrical hazards.