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© Chr. Renz
MR
7/18
4.3
Connection or supply line
The connection cable and the corresponding fuse protection must be determined according to the desi-
red charging current, the cable type, the cable lengths and the local and standardised regulations.
Charging
current
IN
Fuse protection
[A] Typ B
Minimum cross section
[mm²]
10
16
5 x 2,5
16
16
5 x 2,5
Each charging point must be equipped with a separate fuse.
Table 1
4.4
Residual current circuit breaker
The circuit must be protected by a type A residual current device (RCD) with a tripping current of 30
mA. e.g. ABB F204 A-40/0,03
This residual current circuit breaker must be installed in the house distribution before the supply line to
the POWER2CAR STEEL Wallbox charging station. Each charging point must be equipped with a se-
parate residual current circuit breaker.
The charging electronics in the vehicle can generate a DC residual current which is not detected by the
type A residual current circuit breaker. To protect against these DC residual currents, the POWER2CAR
STEEL wallbox has an integrated DC monitor. This component detects the residual currents and, in the
event of a fault, triggers the residual current circuit breaker in the house distribution. This means that no
universal current-sensitive residual current circuit breaker (type B) is required.
Info:
Some vehicles (e.g. Renault Zoe) generate such a high fault current during the charging process
that the RCD installed in the distribution system trips sporadically.
The following residual current circuit breakers are immune to these spikes and have proven themselves
in practice:
Manufacturer
Typ
ABB
F204xx
FS453E
FS453M
Döple
DFS 4B SK xx/0,03A
DFS 4 xxx/0,03-EV
Table 2
