 0361TQ Welding Cable
Specially flexible tinned annealed copper or aluminium conductor (0361TQ / AL), Ethylene Propylene (EP) Rubber Insulated / Chlorosulphonated Polyethylene (CSP) sheathed - BS638.
HOFR : heat and oil resistant, flame retardant
Colour : orange, yellow or black
Operating temperature : maximum 85oC, Minimum flexing -20oC
Minimum bending radius : 6 x overall diameter
For current ratings see below.
Duty cycle : the duty cycle is defined as the time for which the current flows expressed as a percentage of the complete cycle, which is taken as 5 minutes. Since the length of time for which current flows during welding operation varies from occasionally to continuous, the duty cycle can vary from as little as 20% to a maximum of 100% on automatic operation. As conductor temperature varies according to time in use as well as current, the following ratings are given as a guide:
- Automatic welding : up to 100%
- Semi-automatic welding : 30 - 85%
- Manual welding : 30 - 60%
- Very intermittent or occasional welding : Up to 20%
Ambient temperatures : cable operating temperature also varies according to the prevailing ambient temperature. EPR / CSP cables are designed to give optimum performance up to an operating temperature of 85oC at an ambient temperature of 25oC. The reduction factors for increased ambient temperatures are:
| Ambient Temperature |
30oC |
35oC |
40oC |
45oC |
| Reduction Factor |
0.96 |
0.91 |
0.87 |
0.82 |
Operations under severe conditions : High operating temperatures or prolonged maximum loading of the cable reduce the service life or makes the cable too hot to handle. Thus under conditions where a long service life cannot be expected or where a high surface temperature is tolerable, the current rating for 25oC may be applied up to an ambient temperature of 40oC.
| Size Sq. MM |
Stranding MM |
Diameter over Conductor MM |
RT of insulation MM |
Diameter over core MM |
RT of Sheath MM |
Nominal overall diameter MM |
0361TQ weight copper conductor KG / KM |
0361TQ / AL weight aluminium conductor KG / KM |
| 16 |
Class 6 - |
5.7 |
0.9 |
7.5 |
1.7 |
10.9 |
212 |
- |
| 25 |
Class 6 154 / 0.45 |
7.1 |
0.9 |
8.9 |
1.8 |
12.5 |
300 |
146 |
| 35 |
Class 6 217 / 0.45 |
8.5 |
0.9 |
10.3 |
1.8 |
14.0 |
403 |
189 |
| 50 |
Class 6 312 / 0.45 |
10.3 |
0.9 |
12.1 |
1.9 |
16.0 |
560 |
250 |
| 70 |
Class 6 437 / 0.45 |
12.4 |
1.0 |
14.5 |
2.0 |
18.6 |
776 |
349 |
| 95 |
Class 6 589 / 0.45 |
14.5 |
1.0 |
16.6 |
2.2 |
21.2 |
1035 |
455 |
| 120 |
Class 6 756 / 0.45 |
16.0 |
1.0 |
18.1 |
2.4 |
23.1 |
1300 |
564 |
| 150 |
Class 6 925 / 0.45 |
18.0 |
1.1 |
20.3 |
2.5 |
25.5 |
- |
683 |
| 185 |
Class 6 - |
20.0 |
1.2 |
22.5 |
2.6 |
27.9 |
1944 |
- |
| 240 |
- 1525 / 0.45 |
23.0 |
1.3 |
25.7 |
2.8 |
31.5 |
- |
1064 |
Current Ratings
Typical guidance values for different welding processes are as follows:
- Fully automatic welding 100%
- Semi-automatic welding 65 - 85%
- Manual Welding 30 - 60%
- Very infrequent or occasional welding 20%
Cross Sectional Area |
Loading Current in Amps for the Following Duty Cycles |
| mm² |
100% |
85% |
60% |
30% |
| 16 |
135 |
145 |
175 |
245 |
| 25 |
180 |
195 |
230 |
330 |
| 35 |
225 |
245 |
290 |
410 |
| 50 |
285 |
310 |
370 |
520 |
| 70 |
355 |
385 |
460 |
650 |
| 95 |
430 |
470 |
560 |
790 |
| 120 |
500 |
540 |
650 |
910 |
| 185 |
660 |
715 |
850 |
1200 |
Correction Factors
Cable operating temperature also varies according to the prevailing ambient temperature. These cables are designed to give optimum performance up to an operating temperature of 85°C at an ambient temperature of 25°C. The reduction factors for increased ambient temperature are:
| Ambient Temperature |
30°C |
35°C |
40°C |
45°C |
50°C |
55°C |
| Correction Factor |
0.96 |
0.91 |
0.87 |
0.82 |
0.76 |
0.79 |
Conductor Resistance (ohms per kilometre) and Voltage Drop
| Nominal Cross Sectional Area |
Max. Resistance at 20°C Tinned |
Voltage Drop (For Guidance Only) |
Volts Per 100 Amp Per 10 Metres
DC Current * |
| 20°C |
60°C |
85°C |
| mm² |
ohms/Km |
V |
V |
V |
| 16 |
1.240 |
1.240 |
1.430 |
1.560 |
| 25 |
0.795 |
0.795 |
0.920 |
0.998 |
| 35 |
0.565 |
0.565 |
0.654 |
0.709 |
| 50 |
0.393 |
0.393 |
0.455 |
0.493 |
| 70 |
0.277 |
0.277 |
0.321 |
0.348 |
| 95 |
0.210 |
0.210 |
0.246 |
0.264 |
| 120 |
0.164 |
0.164 |
0.190 |
0.206 |
| 185 |
0.108 |
0.108 |
0.125 |
0.136 |
*Note:
The values for AC Current may be much higher, depending on the configuration of the cables. |
