Products & Solutions

Welding Cable

NBR Insulated Extra Flexible Copper Welding Cable

This extra flexible welding cable comes with premium NBR insulation and high-conductivity copper strands for efficient current delivery during welding operations. Engineered for flexibility and toughness, it withstands repetitive flexing and harsh environments while ensuring long service life. Suitable for secondary connections to electrodes and use in automatic or handheld welders across various industrial setups.

Structure & Technical Data

Conductor: High-conductivity, bare annealed copper flexible conductor, EC copper Class 5 and Class 6, generally conforms to IEC 60228 and DIN VDE 0281.
Insulation: Flexible nitrile rubber (NBR) insulation.
Colour code: Orange and black jacket. Any other colour can be supplied on specific request.
Standards: Generally conforms to CENELEC HD 22-6 31, VDE 0282, IEC 245-6, BS 6899 and IS 6830/84.
Fixed installation: -30°C to max. +90°C.
Nominal voltage: 600 V.
Test voltage: 2500 V.
Mechanical properties: Tensile strength = 10 N/mm² min. elongation = 300 min.
Minimum bending radius: 6 × cable diameter.
Flame propagation: Flame-retardant test as per IEC 60332-1.

Welding Cable Features

Ultra high performance flexible welding lead.
Better flame-retardant properties.
Excellent flexibility to last longer in flex applications. Based on CENELEC HD 22-6 31, VDE 0282, IEC 245-6, IS 473 and BS 638-4.
Outstanding toughness and durability.
High resistance to cuts, tears and abrasion.
Resistance to oil, solvents and chemicals.
Excellent ozone and weather resistance.

Welding Cable Application

✓ NBR

Designed for the secondary (high current) connection to automatic or hand-held metal arc welding electrodes. It is suitable for flexible use under rugged conditions, on assembly lines and conveyor systems, in machine tool and automatically operated line and spot welding machines.

✓ Standard length cable packing:

Coils 100, 200, 300 and 500 m in wooden reels.

Technical Data Table

Current Rating:

The maximum current ratings of flexible welding cables for different duty cycles are based on an ambient air temperature of 25°C and a maximum conductor temperature of 90°C. The percentage duty cycles for various processes and applications are as follows:

Automobile Welding: up to 100%
Semi-automatic Welding: 30% to 85%
Manual Welding: 0% to 60%
Very intermittent or Occasional Welding: up to 20%

Voltage Drop

When total cable lengths in excess of 15 mtrs. are involved, it may be necessary to use cables of larger cross section to ensure that the voltage drop is not excessive and welding currents are maintained at adequate levels.

Technical Information

Cross Sectional Area (Sq. mm)	Copper Construction (Nos. × Dia. mm)	Inner Dia. (mm)	Outer Dia. Approx. (mm)	Max. Conductor Resistance at 20°C (Ω/km)	Current Rating: 100%	85%	60%	30%	20%	Non-welding Application (amp)
10	322 / 0.20	2.00	8.10	1.910	105	115	135	190	235	110
16	511 / 0.20	2.00	9.10	1.210	135	145	175	245	302	138
25	798 / 0.20	2.00	10.60	0.780	180	195	230	330	402	187
35	1121 / 0.20	2.00	11.80	0.554	225	245	290	410	503	233
50	1596 / 0.20	2.20	13.70	0.386	285	310	370	520	637	295
70	2220 / 0.20	2.40	16.60	0.272	355	385	460	650	794	372
95	1349 / 0.30	2.60	18.20	0.206	430	470	560	790	961	449
120	608 / 0.50	3.00	21.60	0.161	500	540	650	910	1118	523
150	760 / 0.50	3.00	24.00	0.129	580	620	740	1040	1297	608
185	943 / 0.50	3.40	26.30	0.106	660	715	850	1200	1476	690
240	1225 / 0.50	3.50	29.20	0.0801	710	770	916	1296	1587	744
300	1498 / 0.50	3.60	31.70	0.0641	800	850	1035	1450	1790	840
400	2035 / 0.50	3.80	36.00	0.0486	925	1000	1195	1690	2070	970

The number of wires is approximate and wire diameter is nominal; they shall satisfy conductor resistance requirements of IEC 60228 / DIN VDE 0295 / IS 8130 / BS 6360. Specifications are subject to change without notice. All are flexible conductors; insulation material is NBR and sheath material is NBR.