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Storm Copper saves OEMs time and money by incorporating all fabrication processes under one roof.
OEM Copper Parts

OEM HOTLINE
1-800-394-4804

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Products and Services

Fabricated Copper Parts

OEM Copper Parts
OEM Copper Parts
Copper Bus Bar Fabrication
Copper Bus Bar
Bus Bars and Bus Bar Kits
Copper Ground Bars and Kits
Flexible Braided Connectors
Braided Flex Connectors
Laminated Bus Bar
Laminated Bus Bar
Epoxy and Fluidized Bed Powder Coated Bus Bar
Powder Coated Bus Bar
Battery Connectors, Straps and Posts
Battery Connectors & Straps

Copper Metal Distribution

Storm Copper offers full custom copper fabrication
plus the convenience of online shopping for
copper and other components, including standoff
insulators, ground rods and more.

Copper Sheet
Copper Sheet
Copper Bar Stock
Copper Bar
Copper Flashing
Copper Rod - Round and Square
Copper Rod
Copper Electrical Tube
Copper Tubing - Electrical
Copper Plate
Copper Plate
Copper Clad Ground Rods and Clamps
Ground Rods and Clamps
MaxiFlex Flexible Insulated Bus Bar Flexible Insulated Bus Bar
Electrical Standoff Insulators Electrical Insulators
  Standoff Insulators - Poly
  Standoff Insulators - Ceramic
  Standoff Insulators - Metric
  Insulating Tape and Sheet
   

OEM Contact:

Sheila Stone
Customer Service Manager
240 Industrial Park Lane
Decatur, TN 37322
1-800-394-4804
FAX 423-334-3389

email: busbar@stormcopper.com

Online Store: 1-866-716-9773

For current pricing on Storm's - IN-STOCK - Copper Bar, Copper Sheet, Ground Bars, Punched Copper Connectors, Cable Jumpers and Standoff Insulators Visit our Online Store

For wholesale and volume copper metal product purchases Call Michelle Hurt at 1-866-716-9773.

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Electrical Bus Bar Ampacity Chart

TABLE 1. AMPACITIES OF COPPER BUSBARS - Alloy 11000

Dimension, In.

Area Weight Per Ft in Lb.
DC Resistance at 20 C, Microhms/Ft.
30 C Rise
50 C Rise
65 C Rise
  Sq. In Circ Mils Thousands  
Skin Effect Ratio at 90 C
60 Hz Ampacity Amp*
Skin Effect Ratio at 90 C
60 Hz Ampacity Amp*
Skin Effect Ratio at 90 C
60 Hz Ampacity Amp*
1/16 x 1/2 .0312 39.7 .121
264.0
1.00
103
1.00
136
1.00
157
1/16 x 3/4 .0469 59.7 .181
175.0
1.00
145
1.00
193
1.00
225
1/16 x 1 .0625 79.6 .241
132
1.00
187
1.00
250
1.00
285
1/16 x 1 1/2 .0938 119 .362
87.7
1.00
270
1.00
355
1.00
410
1/16 x 2 .125 159 .483
65.8
1.01
345
1.01
460
1.01
530
 
1/8 x 1/2 .0625 79.6 .241
132
1.00
153
1.00
205
1.00
235
1/8 x 3/4 .0938 119 .362
87.7
1.00
215
1.00
285
1.00
325
1/8 x 1 .125 159 .483
65.8
1.01
270
1.01
360
1.01
415
1/8 x 1 1/2 .188 239 .726
43.8
1.01
385
1.01
510
1.01
590
1/8 x 2 .250 318 .966
32.9
1.02
495
1.02
660
1.02
760
1/8 x 2 1/2 .312 397 1.21
26.4
1.02
600
1.02
800
1.02
920
1/8 x 3 .375 477 1.45
21.9
1.03
710
1.03
940
1.03
1100
1/8 x 3 1/2 .438 558 1.69
18.8
1.04
810
1.03
1100
1.03
1250
1/8 x 4 .500 636 1.93
16.5
1.04
900
1.04
1200
1.04
1400
 
3/16 x 1/2 .0938 119 .362
87.7
1.00
195
1.00
260
1.00
300
3/16 x 3/4 .141 179 .545
58.4
1.01
270
1.01
360
1.01
415
3/16 x 1 .188 239 .726
43.8
1.01
340
1.01
455
1.01
520
3/16 x 1 1/2 .281 358 1.09
29.3
1.02
480
1.02
630
1.02
730
3/16 x 2 .375 477 1.45
21.9
1.03
610
1.03
810
1.03
940
3/16 x 2 1/2 .469 597 1.81
17.5
1.04
740
1.04
980
1.03
1150
3/16 x 3 .562 715 2.17
14.6
1.05
870
1.05
1150
1.04
1350
3/16 x 3 1/2 .656 835 2.53
12.5
1.07
990
1.06
1300
1.06
1500
3/16 x 4 .750 955 2.90
11.0
1.09
1100
1.08
1450
1.07
1700
 
1/4 x 1/2 .125 159 .483
65.8
1.01
240
1.01
315
1.01
360
1/4 x 3/4 .188 239 .726
43.8
1.01
320
1.01
425
1.01
490
1/4 x 1 .250 318 .966
32.9
1.02
400
1.02
530
1.02
620
1/4 x 1 1/2 .375 477 1.45
21.9
1.03
560
1.03
740
1.03
860
1/4 x 2 .500 637 1.93
16.5
1.04
710
1.04
940
1.04
1100
1/4 x 2 1/2 .625 796 2.41
13.2
1.06
850
1.06
1150
1.06
1300
1/4 x 3 .750 955 2.90
11.0
1.08
990
1.08
1300
1.07
1550
1/4 x 3 1/2 .875 1110 3.38
9.40
1.10
1150
1.09
1500
1.09
1750
1/4 x 4 1.00 1270 3.86
8.23
1.12
1250
1.11
1700
1.10
1950
1/4 x 5 1.25 1590 4.83
6.58
1.16
1500
1.15
2000
1.14
2350
1/4 x 6 1.50 1910 5.80
5.49
1.18
1750
1.17
2350
1.17
2700
 
3/8 x 3/4 .281 358 1.09
29.3
1.02
415
1.02
550
1.02
630
3/8 x 1 .375 477 1.45
21.9
1.03
510
1.03
680
1.03
790
3/8 x 1 1/2 .562 715 2.17
14.6
1.05
710
1.04
940
1.04
1100
3/8 x 2 .750 955 2.90
11.0
1.08
880
1.08
1150
1.07
1350
3/8 x 2 1/2 .938 1190 3.62
8.77
1.12
1050
1.10
1400
1.09
1600
3/8 x 3 1.12 1430 4.35
7.35
1.15
1200
1.14
1600
1.13
1850
3/8 x 3 1/2 1.31 1670 5.06
6.38
1.18
1350
1.16
1800
1.15
2100
3/8 x 4 1.50 1910 5.80
5.49
1.20
1500
1.19
2000
1.18
2350
3/8 x 5 1.88 2390 7.26
4.38
1.24
1800
1.23
2400
1.22
2800
3/8 x 6 2.25 2860 8.69
3.66
1.27
2100
1.26
2800
1.24
3250
 
1/2 x 1 .500 637 1.93
16.5
1.04
620
1.04
820
1.04
940
1/2 x 1 1/2 .750 955 2.90
11.0
1.08
830
1.08
1100
1.07
1250
1/2 x 2 1.00 1270 3.86
8.23
1.12
1000
1.11
1350
1.10
1550
1/2 x 2 1/2 1.25 1590 4.83
6.58
1.16
1200
1.15
1600
1.14
1850
1/2 x 3 1.50 1910 5.80
5.49
1.20
1400
1.19
1850
1.18
2150
1/2 x 3 1/2 1.75 2230 6.76
4.70
1.24
1550
1.22
2100
1.21
2400
1/2 x 4 2.00 2550 7.73
4.11
1.26
1700
1.25
2300
1.24
2650
1/2 x 5 2.50 3180 9.66
3.29
1.32
2050
1.30
2750
1.29
3150
1/2 x 6 3.00 3820 11.6
2.74
1.36
2400
1.34
3150
1.33
3650
1/2 x 8 4.00 5090 15.5
2.06
1.42
3000
1.40
4000
1.39
4600

 

 

 

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