Copper Bus Bar Vertical Properties
Dimension(Inches) Area Weight
per Ft,Lb		 Vertical Axis Yield
Load,* Lb
Square
Inches		 Circular
Mils
(thousands)		 Moment
of Inertia
In.4		 Section
Modulus
In.2		 Radius of
Gyration
In.
1/16 x 1/2 Copper Bus Bar 0.0312 39.7 0.121 0.0000102 0.000326 0.018 780
1/16 x 3/4 Copper Bus Bar 0.0469 59.7 0.181 0.0000153 0.000488 0.018 1,170
1/16 x 1 Copper Bus Bar 0.0625 79.6 0.241 0.0000203 0.000651 0.018 1,560
1/16 x 1 1/2 Copper Bus Bar 0.0938 119 0.362 0.0000305 0.000977 0.018 2,340
1/16 x 2 Copper Bus Bar 0.125 159 0.483 0.0000407 0.0013 0.018 3,120
1/8 x 1/2 Copper Bus Bar 0.0625 79.6 0.241 0.0000814 0.0013 0.0361 1,560
1/8 x 3/4 Copper Bus Bar 0.0938 119 0.362 0.000122 0.00196 0.0361 2,340
1/8 x 1 Copper Bus Bar 0.125 159 0.483 0.000163 0.0026 0.0361 3,120
1/8 x 1 1/2 Copper Bus Bar 0.188 239 0.726 0.000244 0.00391 0.0361 4,690
1/8 x 2 Copper Bus Bar 0.25 318 0.966 0.000326 0.00521 0.0361 6,250
1/8 x 2 1/2 Copper Bus Bar 0.312 397 1.21 0.000407 0.00651 0.0361 7,810
1/8 x 3 Copper Bus Bar 0.375 477 1.45 0.000488 0.00781 0.0361 9,380
1/8 x 3 1/2 Copper Bus Bar 0.438 558 1.69 0.00057 0.00912 0.0361 10,940
1/8 x 4 Copper Bus Bar 0.5 636 1.93 0.000651 0.0104 0.0361 12,500
3/16 x 1/2 Copper Bus Bar 0.0938 119 0.362 0.000275 0.00293 0.0541 2,340
3/16 x 3/4 Copper Bus Bar 0.141 179 0.545 0.000412 0.0044 0.0541 3,520
3/16 x 1 Copper Bus Bar 0.188 239 0.726 0.000549 0.00586 0.0541 4,690
3/16 x 1 1/2 Copper Bus Bar 0.281 358 1.09 0.000824 0.00879 0.0541 7,031
3/16 x 2 Copper Bus Bar 0.375 477 1.45 0.0011 0.0117 0.0541 9,380
3/16 x 2 1/2 Copper Bus Bar 0.469 597 1.81 0.00137 0.0146 0.0541 11,700
3/16 x 3 Copper Bus Bar 0.562 715 2.17 0.00165 0.0176 0.0541 14,100
3/16 x 3 1/2 Copper Bus Bar 0.656 835 2.53 0.00192 0.0205 0.0541 16,400
3/16 x 4 Copper Bus Bar 0.75 955 2.9 0.0022 0.0234 0.0541 18,800
1/4 x 1/2 Copper Bus Bar 0.125 159 0.483 0.000651 0.00521 0.0722 3,120
1/4 x 3/4 Copper Bus Bar 0.188 239 0.726 0.000977 0.00781 0.0722 4,690
1/4 x 1 Copper Bus Bar 0.25 318 0.966 0.0013 0.0104 0.0722 6,250
1/4 x 1 1/2 Copper Bus Bar 0.375 477 1.45 0.00195 0.0156 0.0722 9,380
1/4 x 2 Copper Bus Bar 0.5 637 1.93 0.0026 0.0208 0.0722 12,500
1/4 x 2 1/2 Copper Bus Bar 0.625 796 2.41 0.00326 0.026 0.0722 15,600
1/4 x 3 Copper Bus Bar 0.75 955 2.9 0.00391 0.0312 0.0722 18,800
1/4 x 3 1/2 Copper Bus Bar 0.875 1,110 3.38 0.00456 0.0365 0.0722 21,900
1/4 x 4 Copper Bus Bar 1 1,270 3.86 0.00521 0.0417 0.0722 25,000
1/4 x 5 Copper Bus Bar 1.25 1,590 4.83 0.00651 0.0521 0.0722 31,200
1/4 x 6 Copper Bus Bar 1.5 1,910 5.8 0.00781 0.0625 0.0722 37,500
1/4 x 8 Copper Bus Bar 2 2,550 7.73 0.00104 0.0833 0.0722 50,000
1/4 x 10 Copper Bus Bar 2.5 3,180 9.66 0.013 0.104 0.0722 62,500
1/4 x 12 Copper Bus Bar 3 3,820 11.6 0.0156 0.125 0.0722 75,000
3/8 x 3/4 Copper Bus Bar 0.281 358 1.09 0.0033 0.0176 0.108 7,030
3/8 x 1 Copper Bus Bar 0.375 477 1.45 0.00439 0.0234 0.108 9,380
3/8 x 1 1/2 Copper Bus Bar 0.562 715 2.17 0.00659 0.0352 0.108 14,100
3/8 x 2 Copper Bus Bar 0.75 955 2.9 0.00879 0.0469 0.108 18,800
3/8 x 2 1/2 Copper Bus Bar 0.938 1,190 3.62 0.011 0.0586 0.108 23,400
3/8 x 3 Copper Bus Bar 1.12 1,430 4.35 0.0132 0.0703 0.108 28,100
3/8 x 3 1/2 Copper Bus Bar 1.31 1,670 5.06 0.0154 0.082 0.108 32,800
3/8 x 4 Copper Bus Bar 1.5 1,910 5.8 0.0176 0.0938 0.108 37,500
3/8 x 5 Copper Bus Bar 1.88 2,390 7.26 0.022 0.117 0.108 46,900
3/8 x 6 Copper Bus Bar 2.25 2,860 8.69 0.0264 0.141 0.108 56,200
3/8 x 8 Copper Bus Bar 3 3,820 11.6 0.0352 0.188 0.108 75,000
3/8 x 10 Copper Bus Bar 3.75 4,770 14.5 0.0439 0.234 0.108 93,800
3/8 x 12 Copper Bus Bar 4.5 5,730 17.4 0.0527 0.281 0.108 112,000
1/2 x 1 Copper Bus Bar 0.5 637 1.93 0.0104 0.0417 0.144 9,000
1/2 x 1 1/2 Copper Bus Bar 0.75 955 2.9 0.0156 0.0625 0.144 13,500
1/2 x 2 Copper Bus Bar 1 1,270 3.86 0.0208 0.0833 0.144 18,000
1/2 x 2 1/2 Copper Bus Bar 1.25 1,590 4.83 0.026 0.104 0.144 22,500
1/2 x 3 Copper Bus Bar 1.5 1,910 5.8 0.0312 0.125 0.144 27,000
1/2 x 3 1/2 Copper Bus Bar 1.75 2,230 6.76 0.0365 0.146 0.144 31,500
1/2 x 4 Copper Bus Bar 2 2,550 7.73 0.0417 0.167 0.144 36,000
1/2 x 5 Copper Bus Bar 2.5 3,180 9.66 0.0521 0.208 0.144 45,000
1/2 x 6 Copper Bus Bar 3 3,820 11.6 0.0625 0.25 0.144 54,000
1/2 x 8 Copper Bus Bar 4 5,090 15.5 0.0833 0.333 0.144 72,000
1/2 x 10 Copper Bus Bar 5 6,360 19.3 0.104 0.417 0.144 90,000
1/2 x 12 Copper Bus Bar 6 7,640 23.2 0.125 0.5 0.144 108,000
3/4 x 4 Copper Bus Bar 3 3,820 11.6 0.141 0.375 0.216 54,000
3/4 x 5 Copper Bus Bar 3.75 4,770 14.5 0.176 0.469 0.216 67,500
3/4 x 6 Copper Bus Bar 4.5 5,730 17.4 0.211 0.562 0.216 81,000
3/4 x 8 Copper Bus Bar 6 7,640 23.2 0.281 0.75 0.216 108,000
3/4 x 10 Copper Bus Bar 7.5 9,550 29 0.352 0.938 0.216 135,000
3/4 x 12 Copper Bus Bar 9 11,500 34.8 0.422 1.12 0.216 162,000
* In this instance, yeild load equals yeild strength times cross-sectional area of the busbar. A yeild 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.

Other Bus Bar Links

Aluminum Bus Bar General Information
Aluminum Bus Bar Chart
Copper Bus Bar Quick Selector
Copper Bus Bar General Information
Copper Bus Bar Ampacity Chart
Copper Bus Bar DC Ampacity
Copper Bus Bar Horizontal Properties
Copper Emissivity Chart
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