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Current Ratings - General - for Flexible Cables

The indicated values stated in the following table considered as guiding values in an abbreviate form, extracted from DIN VDE 0298 part 4 and DIN VDE 0100 part 430. In critical situation the DIN VDE recommendations should be considered. For industrial machines the DIN VDE 0113, part 1 (EN 60204 part 1/IEC 204-1) is valid; for telephone and information systems DIN VDE 0891 part 1; for telephone aerial cables DIN VDE 0891 part 8 and for flat cables DIN VDE 0891 part 10. General terms and recommended values are contained in DIN VDE 0298 part 2 and part 4.

Power rating values for 1.5-120 mm² (group 3 up to 35 mm²) according to DIN VDE 0100 part 430 at an Ambient temperature up to 30°C
Nominal Cross-section mm² Group 1 Group 2 Group 3
Power
rating
A		 Protective
fuse
A		 Power
rating
A		 Protective
fuse
A		 Power
rating
A		 Protective
fuse
A
0.05 1 - 1 - 2 -
0.14 2 - 2 - 3.5 -
0.25 4 - 4.5 - 6 -
0.34 6 - 6 - 9 -
0.5 9 - 9 - 12 -
0.75 12 - 12 10 15 10
1 15 10 15 10 19 16
1.5 18 16 18 16 24 20
2.5 26 25 26 25 32 25
4 34 25 34 25 42 35
6 44 35 44 35 54 50
10 61 50 61 50 73 63
16 82 80 82 63 98 80
25 108 100 108 80 129 100
35 135 125 135 100 158 125
50 168 160 168 125 198 160
70 207 200 207 160 245 200
95 250 250 250 200 292 250
120 292 250 292 250 344 315
150 335 315 335 315 391 355
185 382 355 382 355 448 400
240 - - 453 425 528 500
300 - - 523 500 608 600
400 - - - - 726 630
Group 1 - One or more single conductor cables and insulated wires laid in duct i. e. PVC-sheathed single conductors H 03V /H 05V /H 07V .. according to VDE 0281.
Group 2 - Multi conductor cables, i. e. light PVC-sheathed cables, flexible
cables, metal-clad wiring cables in open or ventilated conduits.
Group 3 - Single conductor cables, laid open in air with a spacing at least equal to cable diameter, such as single conductor wiring for switch- and distribution cabinets and rail line distributors.

Conversion factors*) for deviating ambient temperatures:
Ambient temperature over 30°C
Ambient temperature Conversion factors, applied to the above current ratings table
Rubber Insulation
Permissible operating temp. at conductor conversion factors up to 60°C 		PVC Insulation
Permissible operating temp. at conductor conversion factors up to 70°C
30-35°C 0.91 0.94
35-40°C 0.82 0.87
40-45°C 0.71 0.79
45-50°C 0.58 0.71
50-55°C 0.41 0.61
55-60°C - 0.50
60-65°C - 0.35

Ambient temperature over 50°C (heat-resistant)
Conversion factors, applied to the above current ratings table
Permissible operating temp. at conductor conversion factors up to 90°C Permissible operating temp. at conductor conversion factors up to 110 °C
50-55°C 0.94 50-55°C 1.00
55-60°C 0.87 55-60°C 1.00
60-65°C 0.79 60-65°C 1.00
65-70°C 0.71 65-70°C 1.00
70-75°C 0.61 70-75°C 1.00
75-80°C 0.50 75-80°C 1.00
80-85°C 0.35 80-85°C 0.91
85-90°C - 85-90°C 0.82
  90-95°C 0.71
95-100°C 0.58
100-105°C 0.41
105-110°C -
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