| Maximum allowable current load of cable lugs and connectors
in conjunction with insulated leadings and conductors |
|
| |
The current load of cable lugs and connectors depends on the regulations
of the VDE 0298 part 4 where the allowable current load of leadings
and cables are regulated. Following a summary of some most used
situations.
The information about current load apply by an ambient temperature
of +30° C in dependence of the laying system of the cables. |
| |
| Group 1: |
Leadings up to a nominal voltage 1 kV and heat resistant
leadings acc. to VDE 0298 part 4 table 11 column 2. Aircooled
single wire leadings, rubber-insulated, PVC-insulated,
heat resistant. |
Group 3: |
Leadings with a nominal voltage of 0,6/1 kV acc. to VDE
0298 part 4, column 7. Rubber insulated leadings 0,6/1 kV
and 1,8/3 kV in special design (air cooled laying). |
| Group 2: |
Leadings up to a nominal voltage of 1 kV and heat resistant
leadings acc. to VDE 0298 part 4 column 5. Multi-conductor
leadings (but not for household appliance and hand-hold
units) layed on or of free areas, rubber insulated, PVC-insulated,
heat resistant. |
Group 4: |
Leadings with a nominal voltage of 0,6/1 kV acc. to VDE
0298, part 4 column 4. Multi conductor leadings rubber tube
insulated and trailing cables up to 6/10 kV layed on or of
free areas. |
| |
current load for copper cables in ampere |
nominal cross-section
mm² |
Group 1 |
Group 2 |
Group 3 |
Group 4 |
| 0,75 |
15 |
12 |
- |
- |
| 1 |
19 |
15 |
- |
- |
| 1,5 |
24 |
18 |
30 |
- |
| 2,5 |
32 |
26 |
41 |
30 |
| 4 |
42 |
34 |
55 |
41 |
| 6 |
54 |
44 |
70 |
53 |
| 10 |
73 |
61 |
98 |
74 |
| 16 |
98 |
82 |
132 |
99 |
| 25 |
129 |
108 |
176 |
131 |
| 35 |
158 |
135 |
218 |
162 |
| 50 |
198 |
168 |
276 |
202 |
| 70 |
245 |
207 |
347 |
250 |
| 95 |
292 |
250 |
416 |
301 |
| 120 |
344 |
292 |
488 |
352 |
| 150 |
391 |
335 |
566 |
404 |
| 185 |
448 |
382 |
644 |
461 |
| 240 |
528 |
453 |
775 |
- |
| 300 |
608 |
526 |
898 |
- |
| 400 |
726 |
- |
- |
- |
| 500 |
830 |
- |
- |
- |
| Remark: Design of the leadings resp. all values deviates from VDE 0298 part 4 dated August 2003 and are only valid under the conditions of the VDE-regulations. |
Tightening torques for screws
acc. to DIN EN 61238/DIN VDE 0220 part 2 for screws 8.8
thread
M |
tightening torquet
Nm |
thread
M |
tightening torquet
Nm |
| 5 |
5 |
12 |
75 |
| 6 |
9 |
14 |
120 |
| 8 |
22 |
16 |
190 |
| 10 |
44 |
20 |
380 |
|
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