1-61 Table 1-11.—Current-Carrying Capacity of Equipment Hook-up Wire—Continued Maximum Current in Amperes Wire Size Copper Wire Aluminum Wire AWG Circular Mils Copper Conductor (100 ° C) Nominal Resistance (Ohms/1000 ft) Wiring in Free Air Wiring Confined Wiring in Free Air Wiring Confined     32            63.2 188.0              0.53            0.32     30          100.5     116.0              0.86            0.52     28          159.8       72.0              1.4            0.83     26          254.1       45.2              2.2            1.3     24          404.0       28.4              3.5            2.1     22          642.4       22.0              7.0            5.0     20    1022       13.7            11.0            7.5     18    1624 6.50   16   10     16    2583 5.15   22   13     14    4107 3.20   32   17     12    6530 2.02   41   23     10 10 380 1.31   55   33       8 16 510      0.734   73   46   60   38       6 26 250      0.459 101   60   83   50       4 41 740      0.290 135   80 108   66       2 66 370      0.185 181 100 152   82       1 93 690      0.151 211 125 174 105       0 105 000      0.117 245 150 202 123     00 133 100      0.092 283 175 235 145   000 167 800      0.074 328 200 266 162 0000 211 600      0.059 380 225 303 190 Table 1-12 lists the preferred general purpose rf cable selected by the armed services as the most satisfactory types to be used in electronics equipment.