Grounding; Residual Current Protective Device - Steca Grid 20000 Installationsanleitung

4.10 Grounding

Risk of electric shock!
The inverter must be connected to the ground stud. Otherwise, a volt-
age gradient may develop, which may result in electric shock!
CAUTION
The inverter features a threaded bolt below the power supply port on the connection side for addi-
tional grounding. Grounding is intended to ensure optimum overvoltage protection. That is why the
ground wire cross-section must be chosen in excess of the cross-section of the power supply line
by a factor of one (at least 10 mm²). In addition, ensure that the ground wire is placed as far away
from and not directly in parallel to the power supply line.
Figure No. 11

4.11 Residual Current Protective Device

Since February 2009, RCDs (residual current protective devices) have been prescribed for recep-
tacle circuits of up to 20 A in interior rooms and of up to 32 A in outside areas which are used by
electrotechnical non-professionals.
Note:
748.508 | Z01 | 2013-06-10
Grounding bolt
The photovoltaic power supply inverters without transformers meet the
fault protection requirements according to DIN VDE 0100-712, IEC 60364-
7-712:2002 and CEI 64-8/7 and can be operated with a type A residual-
current circuit breaker without any functional impairment of the protection
or the inverter.
The rated leakage current should be at least 100 mA per inverter.
PE
Grounding bolt (M8)
EN
23