Using the National Electrical Code® (NEC®) Ampacity Charts

Various tables and charts indicate conductor ampacity, temperature correction factors, and adjustment factors in NFPA 70®, National Electrical Code® (NEC®). This free download includes Tables 310.15(B)(1), 310.15(C)(1), and 310.16 extracted from the NEC, in addition to a flow chart to help guide users through the ampacity tables to select the appropriate conductor for their installation.

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