Book Description

Circular 31 has been revised at the request of the Committee on Wires for Electrical Conductors of the American Society for Testing Materials. To reduce internal inconsistencies, the wire diameters have been rounded to 0.1 mil and the tables are calculated from these values for diameter. Values are listed with an accuracy corresponding to that of the wire diameters. The so-called working tables have been omitted, also the aluminum-wire tables and much of the historical introduction. However, the tables have been extended to 50 gage and to a temperature of 200° C. Otherwise, as far as possible, the original discussion has been retained.