Answer
Sep 11, 2025 - 03:16 PM
The ampacity of electrical wire depends on factors such as the wire’s material, insulation type, and installation conditions. For an "8/2 underground wire 500'"—meaning 8-gauge, 2-conductor direct burial wire—the ampacity typically ranges from 40 to 55 amps for copper conductors, depending on insulation and temperature rating. However, always verify the exact specifications and consult the National Electrical Code (NEC) or a similar standard for the most accurate ampacity rating specific to your installation, as factors like ambient temperature and burial depth can significantly affect safe current-carrying capacity.
