Residual Current Devices (RCDs) / Residual Current Circuit Breakers with Overcurrent Protection (RCBOs)
Residual Current Devices (RCDs) and Residual Current Circuit Breakers with Overcurrent Protection (RCBOs) are electrical devices for protection against electrocution or fire risk caused by an earth fault. This section provides basic guidance on selection and installation of RCDs / RCBOs with Powerwall systems when mandated by local code.
RCDs / RCBOs on Circuits Supplying Powerwall
Where required by local regulations, the installer may select an RCD or RCBO with an appropriate residual current rating for the circuit supply of Powerwall 3. However, to minimize the risk of nuisance trips, a 300 mA Type AC or A RCD / RCBO is recommended.
Powerwall 3 does not require a Type B RCD / RCBO, as it is not capable of feeding DC fault current into the electrical installation as per IEC 60364-7-712:2002.
