ETP Bus Bar

Farmer’s Copper Ltd. maintains an extensive inventory of C11000 (ETP) Electrolytic Tough Pitch copper full round edge and square edge copper bus bar. Copper C110 has become the industry standard for electrical conductivity. Copper 110’s high thermal conductivity enables the copper to dissipate heat generated in the transmission of electricity.

Typical Applications for bus bar

  • Transformers, Switchgears
  • Connectors, Terminals
  • Electrical Breaker boxes

Farmer’s Copper can provide the copper bus bar tin-plated or silver flashed. To complement our bus bar we cut GP03 (Glastic) and GP010 to your specifications on our CNC routers. Our custom finished parts division, we are able to provide your bus bar, with holes drilled, slotted, bent and plated to your requirements. Contact our knowledgeable sales staff today to help you with your bus bar needs.

List of standard sizes

Square edge

1/16” x ½” thru 1/16” x 1-1/2”
1/8” x ¼” thru 1/8” x 2”
3/16” x ½” thru 3/16” x 3”
¼” x ½” thru ¼” x 6”
3/8” x ½” thru 3/8” x 4”
½” x 1” thru ½” x 8”
5/8” x 1” thru 5/8” x 2”
¾” x 1” thru ¾” x 8”
1” x 1-1/2” thru 1” x 8”

Full Round Edge

1/8” x ½” thru 1/8” x 3”
3/16” x 1” thru 3/16” x 3”
¼” x ¾” thru ¼” x 8”
3/8” x 1” thru 3/8” x 8”
½” x 1” thru ½” x 8”
¾” x 4”

Ampacities of Copper C110 Busbars - Ampacities in the table below are for bus bars having an emissivity of 0.4. This was observed on samples exposed for 60 days in an industrial environment, and it is probably identical to that of bus bars in service.

Dimensions, In. Area Weight Per Foot, Lb DC Resistance at 20° C, Microhms Per Ft
Square In. Circular Mils, Thousands
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
264.0
175.0
132.0
87.7
65.8
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
132.0
87.7
65.8
43.8
32.9
26.4
21.9
18.8
16.5
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
87.7
58.4
43.8
29.3
21.9
17.5
14.6
12.5
11.0
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
65.8
43.8
32.9
21.9
16.5
13.2
11.0
9.40
8.23
6.58
5.49
4.11
3.29
2.74
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
29.3
21.9
14.6
11.0
8.77
7.35
6.28
5.49
4.38
3.66
2.74
2.19
1.83
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
16.5
11.0
8.23
6.58
5.49
4.70
4.11
3.29
2.74
2.06
1.65
1.37
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
2.74
2.19
1.83
1.37
1.10
0.914

ASTM Standard Designations for C11000 copper bus: ASTM B187

Dimensions, In. 30 °C Rise 50 °C Rise 65 °C Rise
Skin Effect Ratio at 70° C 60-Hz Ampacity,* Amp Skin Effect Ratio at 90° C 60-Hz Ampacity, *Amp Skin Effect Ratio at 105° C 60-Hz Ampacity, *Amp
1/16 x 1/2
1/16 x 3/4
1/16 x 1
1/16 x 1 1/2
1/16 x 2
1.00
1.00
1.00
1.00
1.01
103
145
187
270
345
1.00
1.00
1.00
1.00
1.01
136
193
250
355
460
1.00
1.00
1.00
1.00
1.01
157
225
285
410
530
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
1.00
1.00
1.01
1.01
1.02
1.02
1.03
1.04
1.04
153
215
270
385
495
600
710
810
910
1.00
1.00
1.01
1.01
1.02
1.02
1.03
1.03
1.04
205
285
360
510
660
800
940
1,100
1,200
1.00
1.00
1.01
1.01
1.02
1.02
1.03
1.03
1.04
235
325
415
590
760
920
1,100
1,250
1,400
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
1.00
1.01
1.01
1.02
1.03
1.04
1.05
1.07
1.09
195
270
340
480
610
740
870
990
1,100
1.00
1.01
1.01
1.02
1.03
1.04
1.05
1.06
1.08
260
360
455
630
810
980
1,150
1,300
1,450
1.00
1.01
1.01
1.02
1.03
1.03
1.04
1.06
1.07
300
415
520
730
940
1,150
1,350
1,500
1,700
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
1.01
1.01
1.02
1.03
1.04
1.06
1.08
1.10
1.12
1.16
1.18
1.23
1.27
1.31
240
320
400
560
710
850
990
1,150
1,250
1,500
1,750
2,250
2,700
3,150
1.01
1.01
1.02
1.03
1.04
1.06
1.08
1.09
1.11
1.15
1.17
1.22
1.26
1.30
315
425
530
740
940
1,150
1,300
1,500
1,700
2,000
2,350
3,000
3,600
4,200
1.01
1.01
1.02
1.03
1.04
1.06
1.07
1.09
1.10
1.14
1.17
1.21
1.25
1.28
360
490
620
860
1,100
1,300
1,550
1,750
1,950
2,350
2,700
3,450
4,200
4,900
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
1.02
1.03
1.05
1.08
1.12
1.15
1.18
1.20
1.24
1.27
1.33
1.38
1.42
415
510
710
880
1,050
1,200
1,350
1,500
1,800
2,100
2,650
3,200
3,700
1.02
1.03
1.04
1.08
1.10
1.14
1.16
1.19
1.23
1.26
1.31
1.36
1.40
550
680
940
1,150
1,400
1,600
1,800
2,000
2,400
2,800
3,550
4,300
5,000
1.02
1.03
1.04
1.07
1.09
1.13
1.15
1.18
1.22
1.24
1.30
1.35
1.38
630
790
1,100
1,350
1,600
1,850
2,100
2,350
2,800
3,250
4,100
4,900
5,800
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
1.04
1.08
1.12
1.16
1.20
1.24
1.26
1.32
1.36
1.42
1.47
1.52
620
830
1,000
1,200
1,400
1,550
1,700
2,050
2,400
3,000
3,600
4,200
1.04
1.08
1.11
1.15
1.19
1.22
1.25
1.30
1.34
1.40
1.45
1.51
820
1,100
1,350
1,600
1,850
2,100
2,300
2,750
3,150
4,000
4,800
5,600
1.04
1.07
1.10
1.14
1.18
1.21
1.24
1.29
1.33
1.39
1.44
1.50
940
1,250
1,550
1,850
2,150
2,400
2,650
3,150
3,650
4,600
5,500
6,400
3/4 x 4
3/4 x 5
3/4 x 6
3/4 x 8
3/4 x 10
3/4 x 12
1.42
1.48
1.52
1.60
1.67
1.72
2,050
2,400
2,800
3,500
4,200
4,900
1.40
1.46
1.50
1.58
1.64
1.69
2,750
3,250
3,750
4,700
5,600
6,500
1.38
1.44
1.48
1.56
1.62
1.67
3,150
3,750
4,300
5,400
6,500
7,500
* Applicable to typical in-service conditions (indoors, 40°C ambient temperature), horizontal run on edge, and free from external magnetic influences.
Chemical Composition
(%max., unless shown as range or min.)

 

Cu(1)

O

Min./Max.

99.90 min

-

Nominal

-

.04

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