18
Model: TX-203,TX-204,TX-228; Article No. 5021,5023,5040; 10/2022
Load capacity of copper lines
Load capacity of copper cables and lines for fixed installation in buildings 1.5mm
2
nominal cross-section; at ambient temperature 25°C, with 2 loaded cores*.
Installation method
On thermally
insulated
walls
In electrical
installation
pipes
On walls In the air
Current carrying capacity Iz of
the conductors of the final
circuit in amperes
16,5
17,5
21
23
Maximum rated current Ig of the
power generation system with
16A circuit breaker
0,5
1,5
5
7
Maximum rated current Ig of the
power generation system with
13A circuit breaker
3,5
4,5
8
10
Photovoltaic system
one solar
module
two solar
modules
up to 3 ×
115W
from 4 ×
115W
max. current load in amperes
1.3
2.6
1.3
2.6
* The example from the table is based on two loaded copper lines with a nominal cross-section of 1.5mm
2
,
which reflects the line in a typical German household. In the case of a larger cross-section or a different cable
type, the permissible current-carrying capacity is different, so that this must be considered separately, in
accordance with DIN VDE 0298-4.
Example before fuse replacement
Example after fuse replacement
(1)
Circuit breaker
(2)
electrical consumer
