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Amperajes de barras Cu
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Ampacities and Mechanical Properties of Rectangular Copper Busbars
Mechanical Properties - This table lists properties useful in calculating such characteristics as stiffness and deflection that are often required by designers of bus bar systems.
Dimensions, In.
Area
Weight Per Foot, Lb
Horizontal Axis
Yield Load, *Lb
Square In.
Circular Mils, Thous
Moment of Inertia In. 4
Section Modulus, In. 3
Radius of Gyration In.
1/16 x 1/2 1/16 x 3/4 1/16 x 1 1/16 x 1 1/2 1/16 x 2
0.0312 0.0469 0.0625 0.0938 0.125
39.7 59.7 79.6 119 159
0.121 0.181 0.241 0.362 0.483
0.000651 0.00220 0.00521 0.0176 0.0417
0.000260 0.00586 0.0104 0.0234 0.0417
0.144 0.217 0.289 0.433 0.577
780 1,170 1,560 2,340 3,120
1/8 x 1/2 1/8 x 3/4 1/8 x 1 1/8 x 1 1/2 1/8 x 2 1/8 x 2 1/2 1/8 x 3 1/8 x 3 1/2 1/8 x 4
0.0625 0.0938 0.125 0.188 0.250 0.312 0.375 0.438 0.500
79.6 119 159 239 318 397 477 558 636
0.241 0.362 0.483 0.726 0.966 1.21 1.45 1.69 1.93
0.00130 0.00440 0.0104 0.0352 0.0833 0.163 0.281 0.447 0.667
0.00521 0.0117 0.0208 0.0469 0.0833 0.130 0.188 0.255 0.333
0.144 0.217 0.289 0.433 0.577 0.722 0.866 1.01 1.16
1,560 2,340 3,120 4,690 6,250 7,810 9,380 10,940 12,500
3/16 x 1/2 3/16 x 3/4 3/16 x 1 3/16 x 1 1/2 3/16 x 2 3/16 x 2 1/2 3/16 x 3 3/16 x 3 1/2 3/16 x 4
0.0938 0.141 0.188 0.281 0.375 0.469 0.562 0.656 0.750
119 179 239 358 477 597 715 835 955
0.362 0.545 0.726 1.09 1.45 1.81 2.17 2.53 2.90
0.00195 0.00659 0.0156 0.0527 0.125 0.244 0.422 0.670 1.00
0.00781 0.0176 0.0312 0.0703 0.125 0.195 0.281 0.383 0.500
0.144 0.217 0.289 0.433 0.577 0.722 0.866 1.01 1.16
2,340 3,520 4,690 7,031 9,380 11,700 14,100 16,400 18,800
1/4 x 1/2 1/4 x 3/4 1/4 x 1 1/4 x 1 1/2 1/4 x 2 1/4 x 2 1/2 1/4 x 3 1/4 x 3 1/2 1/4 x 4 1/4 x 5 1/4 x 6
0.125 0.188 0.250 0.375 0.500 0.625 0.750 0.875 1.00 1.25 1.50
159 239 318 477 637 796 955 1,110 1,270 1,590 1,910
0.483 0.726 0.966 1.45 1.93 2.41 2.90 3.38 3.86 4.83 5.80
0.00260 0.00879 0.0208 0.0703 0.167 0.326 0.562 0.893 1.33 2.60 4.50
0.0104 0.0234 0.0417 0.0938 0.167 0.260 0.375 0.510 1.667 1.04 1.50
0.144 0.217 0.289 0.433 0.577 0.722 0.866 1.01 1.16 1.44 1.73
3,120 4,690 6,250 9,380 12,500 15,600 18,800 21,900 25,000 31,200 37,500
Dimensions, In.
Area
Weight Per Foot, Lb
Horizontal Axis
Yield Load, *Lb
Square In.
Circular Mils, Thous
Moment of Inertia In. 4
Section Modulus, In. 3
Radius of Gyration In.
1/4 x 8 1/4 x 10 1/4 x 12
2.00 2.50 3.00
2,550 3,180 3,820
7.73 9.66 11.6
10.7 20.8 36.0
2.67 4.17 6.00
2.31 2.89 3.46
50,000 62,500 75,000
3/8 x 3/4 3/8 x 1 3/8 x 1 1/2 3/8 x 2 3/8 x 2 1/2 3/8 x 3 3/8 x 3 1/2 3/8 x 4 3/8 x 5 3/8 x 6 3/8 x 8 3/8 x 10 3/8 x 12
0.281 0.375 0.562 0.750 0.938 1.12 1.31 1.50 1.88 2.25 3.00 3.75 4.50
358 477 715 955 1,190 1,430 1,670 1,910 2,390 2,860 3,820 4,770 5,730
1.09 1.45 2.17 2.90 3.62 4.35 5.06 5.80 7.26 8.69 11.6 14.5 17.4
0.0132 0.0312 0.105 0.250 0.488 0.844 1.34 2.00 3.91 6.75 16.0 31.2 54.0
0.0352 0.0625 0.141 0.250 0.391 0.562 0.766 1.00 1.56 2.25 4.00 6.25 9.00
0.217 0.289 0.433 0.577 0.722 0.866 1.01 1.16 1.44 1.73 2.31 2.89 3.46
7,030 9,380 14,100 18,800 23,400 28,100 32,800 37,500 46,900 56,200 75,000 93,800 112,000
1/2 x 1 1/2 x 1 1/2 1/2 x 2 1/2 x 2 1/2 1/2 x 3 1/2 x 3 1/2 1/2 x 4 1/2 x 5 1/2 x 6 1/2 x 8 1/2 x 10 1/2 x 12
0.500 0.750 1.00 1.25 1.50 1.75 2.00 2.50 3.00 4.00 5.00 6.00
637 955 1,270 1,590 1,910 2,230 2,550 3,180 3,820 5,090 6,360 7,640
1.93 2.90 3.86 4.83 5.80 6.76 7.73 9.66 11.6 15.5 19.3 23.2
0.0417 0.0141 0.0333 0.0651 1.12 1.79 2.67 5.21 9.00 21.3 41.7 72.0
0.0833 0.188 0.333 0.521 0.750 1.02 1.33 2.08 3.00 5.33 8.33 12.0
0.289 0.433 0.577 0.722 0.866 1.01 1.16 1.44 1.73 2.31 2.89 3.46
9,000 13,500 18,000 22,500 27,000 31,500 36,000 45,000 54,000 72,000 90,000 108,000
3/4 x 4 3/4 x 5 3/4 x 6 3/4 x 8 3/4 x 10 3/4 x 12
3.00 3.75 4.50 6.00 7.50 9.00
3,820 4,770 5,730 7,640 9,550 11,500
11.6 14.5 17.4 23.2 29.0 34.8
4.00 7.81 13.5 32.0 62.5 108.
2.00 3.12 4.50 8.00 12.5 18.0
1.16 1.44 1.73 2.31 2.89 3.46
54,000 67,500 81,000 108,000 135,000 162,000
* In this instance, yeild load equals yield strength times cross-sectional area of the busbar. A yield strength of 25,000 psi has been assumed for busbar less than 1/2 in. thick and 18,000 psi for busbar 1/2 in. thick or more.
Dimensions, In.
Area
Weight Per Foot, Lb
Vertical Axis
Yield Load,* Lb
Square In.
Circular Mils, Thous
Moment of Inertia In. 4
Section Modulus, In. 3
Radius of Gyration In.
1/16 x 1/2 1/16 x 3/4 1/16 x 1 1/16 x 1 1/2 1/16 x 2
0.0312 0.0469 0.0625 0.0938 0.125
39.7 59.7 79.6 119 159
0.121 0.181 0.241 0.362 0.483
0.0000102 0.0000153 0.0000203 0.0000305 0.0000407
0.000326 0.000488 0.000651 0.000977 0.00130
0.0180 0.0180 0.0180 0.0180 0.0180
780 1,170 1,560 2,340 3,120
1/8 x 1/2 1/8 x 3/4 1/8 x 1 1/8 x 1 1/2 1/8 x 2 1/8 x 2 1/2 1/8 x 3 1/8 x 3 1/2 1/8 x 4
0.0625 0.0938 0.125 0.188 0.250 0.312 0.375 0.438 0.500
79.6 119 159 239 318 397 477 558 636
0.241 0.362 0.483 0.726 0.966 1.21 1.45 1.69 1.93
0.0000814 0.000122 0.000163 0.000244 0.000326 0.000407 0.000488 0.000570 0.000651
0.00130 0.00195 0.00260 0.00391 0.00521 0.00651 0.00781 0.00912 0.0104
0.0361 0.0361 0.0361 0.0361 0.0361 0.0361 0.0361 0.0361 0.0361
1,560 2,340 3,120 4,690 6,250 7,810 9,380 10,940 12,500
3/16 x 1/2 3/16 x 3/4 3/16 x 1 3/16 x 1 1/2 3/16 x 2 3/16 x 2 1/2 3/16 x 3 3/16 x 3 1/2 3/16 x 4
0.0938 0.141 0.188 0.281 0.375 0.469 0.562 0.656 0.750
119 179 239 358 477 597 715 835 955
0.362 0.545 0.726 1.09 1.45 1.81 2.17 2.53 2.90
0.000275 0.000412 0.000549 0.000824 0.00110 0.00137 0.00165 0.00192 0.00220
0.00293 0.00440 0.00586 0.00879 0.0117 0.0146 0.0176 0.0205 0.0234
0.0541 0.0541 0.0541 0.0541 0.0541 0.0541 0.0541 0.0541 0.0541
2,340 3,520 4,690 7,031 9,380 11,700 14,100 16,400 18,800
1/4 x 1/2 1/4 x 3/4 1/4 x 1 1/4 x 1 1/2 1/4 x 2 1/4 x 2 1/2 1/4 x 3 1/4 x 3 1/2 1/4 x 4 1/4 x 5 1/4 x 6 1/4 x 8 1/4 x 10 1/4 x 12
0.125 0.188 0.250 0.375 0.500 0.625 0.750 0.875 1.00 1.25 1.50 2.00 2.50 3.00
159 239 318 477 637 796 955 1,110 1,270 1,590 1,910 2,550 3,180 3,820
0.483 0.726 0.966 1.45 1.93 2.41 2.90 3.38 3.86 4.83 5.80 7.73 9.66 11.6
0.000651 0.000977 0.00130 0.00195 0.00260 0.00326 0.00391 0.00456 0.00521 0.00651 0.00781 0.00104 0.0130 0.0156
0.00521 0.00781 0.0104 0.0156 0.0208 0.0260 0.0312 0.0365 0.0417 0.0521 0.0625 0.0833 0.104 0.125
0.0722 0.0722 0.0722 0.0722 0.0722 0.0722 0.0722 0.0722 0.0722 0.0722 0.0722 0.0722 0.0722 0.0722
3,120 4,690 6,250 9,380 12,500 15,600 18,800 21,900 25,000 31,200 37,500 50,000 62,500 75,000
Dimensions, In.
Area
Weight Per Foot, Lb
Vertical Axis
Yield Load,* Lb
Square In.
Circular Mils, Thous
Moment of Inertia In. 4
Section Modulus, In. 3
Radius of Gyration In.
3/8 x 3/4 3/8 x 1 3/8 x 1 1/2 3/8 x 2 3/8 x 2 1/2 3/8 x 3 3/8 x 3 1/2 3/8 x 4 3/8 x 5 3/8 x 6 3/8 x 8 3/8 x 10 3/8 x 12
0.281 0.375 0.562 0.750 0.938 1.12 1.31 1.50 1.88 2.25 3.00 3.75 4.50
358 477 715 955 1,190 1,430 1,670 1,910 2,390 2,860 3,820 4,770 5,730
1.09 1.45 2.17 2.90 3.62 4.35 5.06 5.80 7.26 8.69 11.6 14.5 17.4
0.00330 0.00439 0.00659 0.00879 0.0110 0.0132 0.0154 0.0176 0.0220 0.0264 0.0352 0.0439 0.0527
0.0176 0.0234 0.0352 0.0469 0.0586 0.0703 0.0820 0.0938 0.117 0.141 0.188 0.234 0.281
0.108 0.108 0.108 0.108 0.108 0.108 0.108 0.108 0.108 0.108 0.108 0.108 0.108
7,030 9,380 14,100 18,800 23,400 28,100 32,800 37,500 46,900 56,200 75,000 93,800 112,000
1/2 x 1 1/2 x 1 1/2 1/2 x 2 1/2 x 2 1/2 1/2 x 3 1/2 x 3 1/2 1/2 x 4 1/2 x 5 1/2 x 6 1/2 x 8 1/2 x 10 1/2 x 12
0.500 0.750 1.00 1.25 1.50 1.75 2.00 2.50 3.00 4.00 5.00 6.00
637 955 1,270 1,590 1,910 2,230 2,550 3,180 3,820 5,090 6,360 7,640
1.93 2.90 3.86 4.83 5.80 6.76 7.73 9.66 11.6 15.5 19.3 23.2
0.0104 0.0156 0.0208 0.0260 0.0312 0.0365 0.0417 0.0521 0.0625 0.0833 0.104 0.125
0.0417 0.0625 0.0833 0.104 0.125 0.146 0.167 0.208 0.250 0.333 0.417 0.500
0.144 0.144 0.144 0.144 0.144 0.144 0.144 0.144 0.144 0.144 0.144 0.144
9,000 13,500 18,000 22,500 27,000 31,500 36,000 45,000 54,000 72,000 90,000 108,000
3/4 x 4 3/4 x 5 3/4 x 6 3/4 x 8 3/4 x 10 3/4 x 12
3.00 3.75 4.50 6.00 7.50 9.00
3,820 4,770 5,730 7,640 9,550 11,500
11.6 14.5 17.4 23.2 29.0 34.8
0.141 0.176 0.211 0.281 0.352 0.422
0.375 0.469 0.562 0.750 0.938 1.12
0.216 0.216 0.216 0.216 0.216 0.216
54,000 67,500 81,000 108,000 135,000 162,000
* In this instance, yield load equals yeild strength times cross-sectional area of the busbar. A yield strength of 25,000 psi has been assumed for busbar less than 1/2 in. thick and 18,000 psi for busbar 1/2 in. thick or more.