The current carrying capacity in connection with the line cross-section of copper con-
ductors isolated with PVC or cables according to DIN EN 60204-1 for different types of
wiring are indicated in the following table. All values are related to an ambient temper-
ature of +40 °C and an operating temperature at the conductor of 70 °C.
Admissible current I [A]Conductor cross-
section A [mm²]
B2 wiring
(1)
Wiring type C
(2)
Wiring type E
(3)
0,75 8,5 9,8 10,4
1,00 10,1 11,7 12,4
1,50 13,1 15,2 16,1
2,50 17,4 21 22
4 23 28 30
6 30 36 37
10 40 50 52
16 54 66 70
25 70 84 88
35 86 104 110
50 103 125 133
70 130 160 171
95 156 194 207
120 179 225 240
Tab. 8: Current carrying capacity according to DIN EN 60204-1
(1)
cable laying in installation tubes or closed installation channels on or under the wall surface or in chan-
nels for underfloor (multicore or sheathed cables)
(2)
direct cable laying on or under the wall/ceiling or in cable trays (multicore or sheathed cables)
(3)
free cable laying with suspension ropes or on cable racks with a min. distance of 0.3 × cable diameter to
the wall (multicore or sheathed cables)
Tab. 8: Current carrying capacity according to DIN EN 60204-1
The following correction factors are provided for deviating ambient temperatures:
Ambient temperature T [°C] Correction factor
30 1,15
35 1,08
40 1,00
45 0,91
50 0,82
55 0,71
60 0,58
Cross-sections of round conductors
The standard values of the cross-section of round copper conductors as well as the ap-
proximate ratio of metric ISO and AWG/MCM values are shown in the following table.
Standardized cross-sections of round conductors:
AWG/MCMISO cross-section [mm²]
Value Equivalent cross-section [mm²]
0,2 24 0,205
– 22 0,324
0,5 20 0,519
0,75 18 0,82
1,0 – –
1,5 16 1,3
2,5 14 2,1
4,0 12 3,3
6,0 10 5,3
10 8 8,4
16 6 13,3
31Drive Amplifier SD4B - Hardware Description
Connectors
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