TECHNICAL SPECIFICATIONS OF WELDING CABLES 
(conforming to IS: 9857-1990 and Amendments)

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Special Features of HOFR Welding Cables

 Light in Weight Longer life than General Purpose (VIR / TRS)
 Heat Resistant
 Oil Resistant
 Flame Resistant    Works at High Temperature Constantly
 High Current Carrying Capacity    Performs Equally well at Lower Voltage

Conductor of annealed High Conductivity Aluminum wires or plain copper wires, taped, elastomer TRS or HOFR insulated & sheathed

Current Rating of General Service Normal Duty Elastomeric Compound Covered Welding Cable

Current Rating of HOFR Normal Duty Elastomeric Compound Covered welding Cable

 


Conductor of annealed High Conductivity Aluminum wires or plain copper wires, taped, elastomer TRS or HOFR insulated & sheathed

Nominal area
of Conductor
(Sq. mm.)

Copper Conductor

Aluminum Conductor

Radial thickness of covering (mm)

Approximate overall diameter (mm)

Maximum Resistance at
20°C

Radial thickness of covering
(mm)

Approximate overall diameter (mm)

Maximum Resistance at
20°C
16 2.0 9.2 1.210      
25 2.0 11.7 0.780 2.0 11.7 1.230
35 2.0 12.5 0.554 2.0 12.2 0.901
50 2.2 14.7 0.386 2.2 14.6 0.634
70 2.4 17.2 0.272 2.4 16.5 0.445
95 2.6 20.0 0.206 2.6 20.4 0.334
120       2.8 22.6 0.256

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Current Rating of General Service Normal Duty Elastomeric Compound Covered Welding Cable
(Ambient Air Temperature 30°C  Maximum Conductor Temperature 60°C)

Nominal area
of Conductor
(Sq. mm.)

Copper Conductor
Current Rating At Maximum Duty Cycle of

Aluminum Conductor
Current Rating At Maximum Duty Cycle of

100%
(Amps)

85%
(Amps)

60%
(Amps)

30%
(Amps)

20%
(Amps)

100%
(Amps)

85%
(Amps)

60%
(Amps)

30%
(Amps)

20%
(Amps)
16 94 102 121 172 210          
25 125 136 161 228 279 100 108 129 183 224
35 156 169 201 285 349 123 133 159 225 275
50 197 214 254 360 440 155 168 200 283 347
70 248 269 320 453 555 196 213 253 358 438
95 299 342 386 546 669 237 257 306 433 530
120           283 307 365 517 633

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Current Rating of HOFR Normal Duty Elastomeric Compound Covered welding Cable
(Ambient Air Temperature 30°C  Maximum Conductor Temperature 90°C)

Nominal area
of Conductor
(Sq. mm.)

Copper Conductor
Current Rating At Maximum Duty Cycle of

Aluminum Conductor
Current Rating At Maximum Duty Cycle of

100%
(Amps)

85%
(Amps)

60%
(Amps)

30%
(Amps)

100%
(Amps)

85%
(Amps)

60%
(Amps)

30%
(Amps)
16 135 146 174 246
25 177 192 228 343 144 156 186 263
35 221 240 285 403 176 191 227 321
50 279 303 360 509 222 241 287 405
70 352 382 454 643 280 304 361 511
95 424 460 547 774 339 368 438 619
120 404 438 522 738

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