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International cable and fuse sizes—208 Vac to 240 Vac Ratings
208 V
input
current
Frame
(VT/IL)
size
4.4
FR1
6.1
7.2
10.2
11.6
16.3
FR2
23.2
29
44.2
FR3
56
64.6
FR4
78
94.3
129
FR5
157
189
242.8
FR6
290.3
Notes:
-
Line and motor cable size is selected according to IEC 60364-5-52:2009 Table B.52.4 for copper
conductor with PVC insulation with a wiring condition of ambient temperature 30 °C in air and an
installation method of "B2" (cables in conduit and cable trunking systems). For other wiring conditions,
please refer to the standard of IEC 60364-5-52:2009 for suitable cable sizes.
-
Earthing conductor size is determined by the cross-sectional area of phase conductors according to
IEC/EN 61800-5-1:2007 Table 5. So, if phase conductor size is changed, earthing conductor size should
also be changed accordingly.
-
If power cubes or bypass are used, a Class gG/gL fuse is recommended.
Mains and
motor
Current
Fuse
cable
(VT/IL)
rating
at 40 °C
(gG/gL)
Cu (mm2)
4.8
6
3*1.5+1.5
6.6
10
3*1.5+1.5
7.8
16
3*1.5+1.5
11
16
3*1.5+1.5
12.5
16
3*1.5+1.5
17.5
20
3*4+4
25
32
3*4+4
31
32
3*6+6
48
50
3*16+16
61
63
3*16+16
75
80
3*25+16
88
100
3*35+16
114
125
3*50+25
143
160
3*70+35
170
200
3*95+50
211
250
3*150+95
261
400
2*(3*70+35)
312
400
2*(3*95+50)
Terminal cable size
Earth
Main terminal
terminal
Cu (mm2)
Cu (mm2)
0.2–6 solid or
0.75–6
0.2–4 stranded
0.2–6 solid or
0.75–6
0.2–4 stranded
0.2–6 solid or
0.75–6
0.2–4 stranded
0.2–6 solid or
0.75–6
0.2–4 stranded
0.2–6 solid or
0.75–6
0.2–4 stranded
0.5–16
4–16
0.5–16
4–16
0.5–16
4–16
16–35
2.5–25
16–35
2.5–25
16–50
6–50
16–50
6–50
16–50
6–50
50–185
10–120
50–185
10–120
50–185
10–120
2*(50–150)
35–150
2*(50–150)
35–150
23
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