Never use a flexible cord or cable in place of a permanent wiring method. Replace, rather than patch, a damaged cord or cable. Ampacity. Tables 400.5(A) and 400.5(B) list the allowable ampacity for ...

Corrected Ampacity = Table 310.16 Ampacity × Ambient Temperature Correction Factor. For a dry location, use the 90°C column for THHN. Ambient Temperature Correction Factor for 100°F = 0.91 for THHN.