What is the Ampacity of 12 AWG THHN?

The ampacity of 12 AWG THHN wire is typically around 30 amps for general applications when used in a conduit at a temperature rating of 60°C (140°F). However, if the wire is used in a different environment or at higher temperatures, the ampacity may be lower. Always consult the National Electrical Code (NEC) or local regulations for specific applications and conditions to ensure safety and compliance.