SIEMENS
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Siemens NC 62 · 2016
MOTION-CONNECT connection systems
Introduction
General information
7
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More information
Current carrying capacity for power and signal cables
The current carrying capacity of PVC/PUR-insulated copper
cables is specified for installation types B1, B2, C and E under
continuous operating conditions in the table with reference to an
ambient air temperature of 40 °C (104 °F). For other ambient
temperatures, the values must be corrected by the derating
factors from the table.
Derating factors for power and signal cables
Cross-
section
Current carrying capacity
rms AC 50/60 Hz or DC in amps for installation type
B1
B2
C
E
mm
2
Single-core
cables in
protection
tubes or
installation
ducts
Multi-core
cables in
protection
tubes or
installation
ducts
Multi-core
cables, verti-
cally or hori-
zontally on
walls / open,
without protec-
tion tubes and
installation
ducts / with
contact
Multi-core
cables, hori-
zontally or
vertically on
perforated
cable racks /
open, without
protection
tubes and
installation
ducts / with
contact
Electronics
1)
0.20
–
4.3
4.4
4.4
0.50
–
7.5
7.5
7.8
0.75
–
9
9.5
10
Power
2)
0.75
8.6
8.5
9.8
10.4
1.00
10.3
10.1
11.7
12.4
1.50
13.5
13.1
15.2
16.1
2.50
18.3
17.4
21
22
4
24
23
28
30
6
31
30
36
37
10
44
40
50
52
16
59
54
66
70
25
77
70
84
88
35
96
86
104
110
50
117
103
125
133
70
149
130
160
171
95
180
165
194
207
120
208
179
225
240
Ambient air temperature
°C (°F)
Derating factor
according to EN 60204-1,
Table D.1
30 (86)
1.15
35 (95)
1.08
40 (104)
1.00
45 (113)
0.91
50 (122)
0.82
55 (131)
0.71
60 (140)
0.58
1)
One control circuit pair.
2)
One symmetrically loaded three-phase AC cable.
© Siemens AG 2016