IEC 60364-4-41-2005
411.5 TT system
411.5.1 All exposed-conductive-parts collectively protected by the same protective device
shall be connected by the protective conductors to an earth electrode common to all those
parts. Where several protective devices are utilized in series, this requirement applies
separately to all the exposed-conductive-parts protected by each device.
What would happen if exposed-conductive-parts collectively protected by the same protective device be connected to different earth electrode?
