23XCHARGEIN DC 22 INSTALLATION MANUAL MN192004EN September 2021 www.eaton.com00TitleWhen dimensioning the line circuit breaker, the increased ambient temperatures in the control cabinetmust also be considered. Under certain circumstances, this can make a reduction of the charging currentspecification necessary in order to increase the system availability.The nominal current must be determined in accordance with the type plate data in coordination with thedesired charging power and the supply line.Figure 18. xChargeIn DC 22 charging station wiringIn accordance with IEC 60364-7-722 a RCD is not required, unless in TT and TN systems in areas wherea fire hazard is present. There, a RCD with rated residual current of <= 300 mA shall be used for fireprotection, in accordance with IEC 60364-4-42 and local standards.The circuit breakers and the power cable minimal cross-sections are overvalued to ensure the functionalityof the charging station with higher temperatures.During installation, other important issues such as “cascading” of RCDs and selection of a suitable linecircuit breaker must be considered.It is permitted to supply the 32 A terminal, under the following conditions:• If the temperature where the circuit breaker is located does not exceed its reference value.• If the circuit breaker can withstand the maximum current without tripping under the worst temperatureconditions.• Please refer to local standards for further details.L1 L2 L3 N PEHTL1L2L3NPE123PENumber Description1 xChargeIn DC 222 RCD (considering fire protection)3 Circuit breaker