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Special Cables • Temperature Measurement • Cable Harnessing

Calculate cross-section and conversion factors for cables and wires

Current-carrying capacity: tables

(Extract from VDE 0298 T4 06/13 tables: 11, 17, 18, 21, 26 and 27)


Current-carrying capacity, cables with a nominal voltage up to 1000 V and heat resistant cables VDE 0298 T4 08/03 table 11, column 2 and 5

column 2column 5
way of layingin air on or at surfaces
mono conductors


- rubber insulated
- PVC insulated
- heat resistant
Multi conductor cables
(except for house or handheld units)
- rubber insulated
- PVC insulated
- heat resistant
Number of charged conductors12 or 3
Nominal sectionCapacity (Ampere)
0,75 mm215A12A
1,00 mm219A15A
1,50 mm224A18A
2,50 mm232A26A
4,00 mm242A34A
6,00 mm254A44A
10,00 mm273A61A
16,00 mm298A82A
25,00 mm2129A108A
35,00 mm2158A135A
50,00 mm2198A168A
70,00 mm2245A207A
95,00 mm2292A250A
120,00 mm2344A292A
150,00 mm2391A335A
185,00 mm2448A382A
240,00 mm2528A453A
300,00 mm2608A523A

 

 

Current-carrying capacity of cables for deveating ambient temperatures 
VDE 0298 T4 06/13, table 17, column 41)
Ambient temperatureFactor
10 °C1,22
15 °C 1,17
20 °C 1,12
25 °C 1,06
30 °C 1,00
35 °C 0,94
40 °C 0,87
45 °C 0,79
50 °C 0,71
55 °C 0,61
60 °C 0,50
65 °C 0,35

1) for cables with a service temperature of max. 70°C at the conductor  

 

 

Current-carrying capacity of cables for multi-core cables with a nominal section up to 10 mm2
VDE 0298 T4 06/13 table 26. With installation in the open air.
No. of the loaded coresFactor
5 0,75
7 0,65
10 0,55
14 0,50
19 0,45
24 0,40
40 0,35
61 0,30

 

 

Current-carrying capacity of cables for diviating ambient temperatures for heat resistant cables VDE 0298 T4 06/13 table 18, column 3-6
column 3 column 4 column 5 column 6
zulässige Betriebstemperatur
90°C 110°C 135°C 180°C
ambient temperatureconversion factors, to apply to the capacity of heat resistant cables in table 11, column 2 and 5
up to 50 °C1,001,001,001,00
55 °C0,941,001,001,00
60 °C0,871,001,001,00
65 °C0,791,001,001,00
70 °C0,711,001,001,00
75 °C0,611,001,001,00
80 °C0,501,001,001,00
85 °C0,350,911,001,00
90 °C-----0,821,001,00
95 °C-----0,711,001,00
100 °C-----0,580,941,00
105 °C-----0,410,871,00
110 °C----------0,791,00
115 °C----------0,711,00
120 °C----------0,611,00
125 °C----------0,501,00
130 °C----------0,351,00
135 °C---------------1,00
140 °C---------------1,00
145 °C---------------1,00
150 °C---------------1,00
155 °C---------------0,91
160 °C---------------0,82
165 °C---------------0,71
170 °C---------------0,58
175 °C---------------0,41

 

 

Current-carrying capacity of cables for the accumulation on walls, in tubes and conduits, on the floor and at the ceiling VDE 0298 T4 06/13 table 21

No. of multi-core cables

(2 or 3 current-carrying cores)

Factor

1

 1,00

20,80
30,70
40,65
50,60
60,57
70,54
80,52
90,50
100,48
120,45
140,43
160,41
180,39
200,38

 

The maximum current-carrying capacity acc. to DIN VDE 0891 part 1 point 7 has to be considered for the application of insulated cables in telecommunication systems and data processing units.

 

Current-carrying capacity of cables for wound up cables VDE 0298 T4 06/13 table 27
123456
no. of layers on one drum12345
conversion factors0,800,610,490,420,38

 

Note: for spiral winding the conversion factor is of 0,80 is valid

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