Current rating for copper conductors in insulated cables and
appropriate fuses for overload protection to VDE 250/4.64

Group 1: Group 2: Group 3:
One or several single stranded conductors layed in tubes. Multi-stranded conductors, e. g. sheated cable, fish wire, lead-sheated cable, flexible cable. Single-stranded aerial cable layed at a minimum distance equal to conductor diameter, single stranded wire for switchgear and distributing installations.
 
Wire-
size
Fuses Current-
rating
Fuses Current-
rating
Fuses Current-
rating
mm² A A A A A A
0.75 13 10 16 16
1 12 10 16 16 20 20
1.5 16 16 20 20 25 25
2.5 21 20 27 25 34 35
4 27 25 36 35 45 50
6 35 35 47 50 57 63
10 48 50 65 63 78 80
16 65 63 87 80 104 100
25 88 80 115 100 137 125
35 110 100 143 125 168 160
50 140 125 178 160 210 200
70 175 160 220 224 260 250
95 210 200 265 250 310 300
120 250 250 310 300 365 355
150 355 355 415 425
185 405 355 475 425
240 480 425 560 500
300 555 500 645 600
400 770 710
500 880 850