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© 2011 Tyco Electronics Corporation, a TE Connectivity Ltd. Company All Rights Reserved *Trademark TE Connectivity, TE connectivity (logo), and TE (logo) are trademarks. Other logos, product and/or Company names may be trademarks of their respective owners. 1 of 16TOOLING ASSISTANCE CENTER 1-800-722-1111 PRODUCT INFORMATION 1-800-522-6752 This controlled document is subject to change. For latest revision and Regional Customer Service, visit our website at www.te.com LOC B 82561 Computing Circular Mil Area for Terminals and Splices 17 AUG 11 Rev B Computing Circular Mil Area for Terminals and Splices
Since the previous release of this document, the new company logo has been applied.
Computing Circular Mil Area For Terminals And Splice For best results, the proper terminal or splice must be selected not by the “fit" of wire or wires in the terminal barrel, but by the total circular mil area in cross section of the wires used. For this purpose convenient tables have been prepared to assist in the calculation of circular mil areas. When the totals are known, the proper terminal or splice can be determined quickly. Unusual combinations or special applications should be submitted to our engineering department for size recommendation. In any application, the careful selection of terminals by the circular mil area method will insure the highest possible performance, both electrically and mechanically, in your terminations. ALWAYS SELECT TERMINALS BY THE CIRCULAR MIL AREA METHOD. For example, a wire size 18 AWG 16-strand conductor (1600 CMA) and a wire size
16 AWG 19-strand conductor (2426 CMA) will have a
combined total of 4026 CMA. This total CMA is equivalent to a wire size 14 AWG conductor. We offer terminals and splices for nearly every need and application. For additional information, contact your Sales Engineer or call Product Information at 1- 800-522-6752.
How to Compute Circular Mil Area of Various Wire Shapes
Table 1 -- (Wire Size in AWG and mm² to CMA)
Table 1 -- Continued (Wire Size in AWG and mm² to CMA)
Table 1 -- Continued (Wire Size in AWG and mm² to CMA)
Table 1 -- Continued (Wire Size in AWG and mm² to CMA)
Table 1 -- Continued (Wire Size in AWG and mm² to CMA)
- Nominal CMA has been “rounded off” for ease of calculation when using multile wires in one termination.
Table 1 -- Addendum (Wire Size in AWG and mm² to CMA)
Table 2 -- (Solid Wire) U.S. Customary Dimensions Use to convert wire size to inches of diameter and CMA. T o read mils direct, move decimal point three places to the right. Metric Dimensions Use to convert wire size to millimeters of diameter and CMA.
Table 3 -- (CMA Range Tables) Use to select the proper size terminals or splices.
Table 4 -- (CMA and Diameter for Magnet Wire Size 42 through 8 AWG)
Table 4 -- CMA and Diameter for Magnet Wire Size 42 through 8 AWG)
Table 5 -- Decimal Inch to Millimeter; Use for Measuring Crimp Heights
Table 5 -- Decimal Inch to Millimeter; Use for Measuring Crimp Heights