Here's part of 310.15(b)
"(B) Tables. Ampacities for conductors rated 0 to 2000 volts
shall be as specified in the Allowable Ampacity Table
310.15(B)(16) through Table 310.15(B)(19), and Ampacity
Table 310.15(B)(20) and Table 310.15(B)(21) as modified by
310.15(B)(1) through (B)(7).
The temperature correction and adjustment factors shall
be permitted to be applied to the ampacity for the temperature
rating of the conductor, if the corrected and adjusted
ampacity does not exceed the ampacity for the temperature
rating of the termination in accordance with the provisions
of 110.14(C).
Informational Note: Table 310.15(B)(16) through Table
310.15(B)(19) are application tables for use in determining
conductor sizes on loads calculated in accordance with Article
220. Allowable ampacities result from consideration of
one or more of the following:
(1) Temperature compatibility with connected equipment,
especially the connection points.
(2) Coordination with circuit and system overcurrent protection.
(3) Compliance with the requirements of product listings
or certifications. See 110.3(B).
(4) Preservation of the safety benefits of established industry
practices and standardized procedures.
(1) General. For explanation of type letters used in tables"
Anyone who can enlarge this font, please do so (with my blessings)
Last edited by HotLine1; 11/16/10 08:47 PM. Reason: Added note
