Maximum continuous thermal current Io in copper wire according to the Greek Electrical Installations Regulation. (paragraph 126)
These values stand for 30oC ambient temperatures and 60oC Wire temperatures , and they can be corrected using the values in table 2.
Section mm2 |
Cat I |
Cat II |
Cat III |
Imax |
Ifuse |
Imax |
Ifuse |
Imax |
Ifuse |
0,75 |
9 |
6 |
15 |
10 |
7 |
6 |
1 |
11 |
6 |
18 |
16 |
9 |
6 |
1,5 |
14 |
10 |
22 |
20 |
10 |
6 |
2,5 |
20 |
16 |
31 |
25 |
15 |
10 |
4 |
25 |
20 |
41 |
35 |
20 |
16 |
6 |
33 |
25 |
54 |
50 |
26 |
20 |
10 |
43 |
35 |
70 |
60 |
35 |
25 |
16 |
60 |
50 |
96 |
80 |
48 |
35 |
25 |
83 |
60 |
128 |
100 |
65 |
50 |
35 |
100 |
80 |
153 |
125 |
78 |
60 |
50 |
127 |
100 |
197 |
160 |
100 |
80 |
70 |
147 |
125 |
234 |
200 |
- |
- |
95 |
181 |
160 |
287 |
250 |
- |
- |
120 |
208 |
200 |
336 |
300 |
- |
- |
150 |
238 |
225 |
383 |
355 |
- |
- |
185 |
266 |
250 |
435 |
425 |
- |
- |
240 |
- |
- |
515 |
500 |
- |
- |
300 |
- |
- |
596 |
600 |
- |
- |
400 |
- |
- |
710 |
710 |
- |
- |
500 |
- |
- |
810 |
800 |
- |
- |
Table 2. (Temperature correction factors).
Amb. temp |
30 |
35 |
40 |
45 |
50 |
55 |
Factor |
1,00 |
0,91 |
0,82 |
0,71 |
0,58 |
0,41 |