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Bare Copper Conductor
Bare Conductors

Bare Copper Conductor

Bare Copper Conductor Stranded

  • ASTM B8 · BS 7884 · IEC 60228

Product Description

Bare Copper Conductor Stranded

Hard, Medium-Hard, or Soft-Drawn

Used for grounding purposes in accordance with the National Electrical Code (NEC). Soft-drawn solid or stranded conductors are used for grounding connections in circuits, machinery, equipment, and counterpoise grounding systems. Hard-drawn conductors are suitable for overhead transmission and distribution lines and specified grounding applications. Also available tinned.

Physical Data

Bare Copper Conductors Stranded
Size Area Class A Class B Net Weight dc Resistance*
AWG kcmil cmil Number of OD Number of OD lb/kft
Strands in Strands in 20 °C
14 — 4110 — — 7 0.0726 13 2.58
12 — 6530 — — 7 0.0915 20 1.63
10 — 10380 — — 7 0.116 32 1.02
8 — 16510 — — 7 0.146 51 0.64
6 — 26240 — — 7 0.184 81 0.403
4 — 41740 7 0.232 7 0.232 129 0.253
3 — 52620 7 0.26 7 0.26 163 0.201
2 — 66360 7 0.292 7 0.292 205 0.159
1 — 83690 7 0.328 19 0.332 258 0.127
1/0 — 105600 7 0.368 19 0.373 326 0.1
2/0 — 133100 7 0.414 19 0.419 411 0.795
3/0 — 167800 7 0.464 19 0.47 518 0.063
4/0 — 211600 7 0.522 19 0.528 653 0.05
— 250 250000 19 0.574 37 0.575 772 0.0423
— 300 300000 19 0.629 37 0.63 926 0.0353
— 350 350000 19 0.679 37 0.681 1081 0.0302
— 400 400000 19 0.726 37 0.728 1235 0.0264
— 450 450000 37 0.772 37 0.772 1389 0.0235
— 500 500000 37 0.813 37 0.813 1544 0.0192
— 600 600000 37 0.891 61 0.893 1883 0.0177
— 750 750000 61 0.998 61 0.998 2316 0.0141
— 1000 100000 61 1.152 61 1.152 3088 0.0106
— 1250 125000 61 1.288 91 1.289 3859 0.0085
— 1500 150000 61 1.411 91 1.412 4631 0.0071
— 1750 175000 91 1.526 127 1.526 5403 0.006
— 2000 200000 91 1.63 127 1.632 6175 0.0053
The above data are approximate and subject to normal manufacturing tolerances. Where required, the compatibility with glands, connectors and accessories should be verified using actual dimensions of the product. Other sizes available upon request. *Direct current resistances apply to Class B, C, and D stranding.
Bare Copper Conductors Stranded (cont.)
Breaking Strength
Size Strands Hard Drawn
Rated
Strength
dc
Resistance
@ 20 °C
Medium-Hard Drawn
Rated
Strength
dc
Resistance
@ 20 °C
Soft Drawn
(Annealed)
Rated
Strength
dc
Resistance
@ 20 °C
Allowable
Ampacity †
AWG kcmil lb Ω/kft lb Ω/kft lb Ω/kft
14 — 7 197 2.679 158 2.665 — — —
12 — 7 311 1.685 248 1.676 — — —
10 — 7 492 1.06 389 1.054 — — —
8 — 7 777 0.6663 610 0.6629 499 0.6408 98
6 — 7 1228 0.4191 959 0.4169 794 0.403 124
4 — 7 1938 0.2636 1505 0.2622 1320 0.2534 155
3 — 7 2433 0.209 1885 0.2079 1670 0.201 —
2 — 7 3050 0.166 2360 0.165 2110 0.1578 209
1 — 7 3801 0.1316 2955 0.1309 2552 0.1252 —
1/0 — 7 4752 0.1042 3705 0.1037 3221 0.1002 282
2/0 — 7 5926 0.08267 4640 0.08224 4062 0.07949 329
3/0 — 7 7366 0.06556 5812 0.06522 5118 0.06304 382
4/0 — 7 9154 0.05199 7278 0.05172 6459 0.04999 444
4/0 — 19 9617 0.05199 7479 0.05172 6453 0.04999 444
— 250 19 11360 0.044 8836 0.04378 7627 0.04231 494
— 250 37 11600 0.044 8952 0.04378 7940 0.04231 494
— 300 19 13510 0.03667 10530 0.03648 9160 0.03526 556
— 350 19 15590 0.03143 12200 0.03127 10680 0.03022 —
— 500 37 22510 0.022 17550 0.02189 15240 0.02116 773
— 600 37 27020 0.01834 21060 0.01825 18300 0.01763 —
— 750 61 34090 0.01467 26510 0.01459 22890 0.0141 1000
— 1000 61 45030 0.011 35100 0.01094 30500 0.01058 1193
† Ampacity per NEC table 310.15 (B) (21) based on 80°C Conductor Temperature, 40°C Ambient Temperature, 2ft/s Wind in Sun.

Applicable Standards

ASTM B8BS 7884IEC 60228

Certificate Display

ISO 9001 Quality Management System
ISO 9001 Certificate (2025–2028)
ISO 9001 Certificate (NOA)
CE — Verification of Conformity
RoHS Compliance Attestation (EU)
Low Voltage Directive Attestation (EU)

Type and routine tests are issued from our own testing centre under the ISO 9001 quality system — test reports and certificates accompany every shipment.

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