A Power system earth
B Exposed conductive parts
Network type TN-C (Terra Neutral-Combined) :
In the TN-C power distribution system, the neutral and the protective earth functions are combined in a single
conductor.
A Power system earth
B Exposed conductive parts
Network type TN-C-S (Terra Neutral-Combined-Separate) :
In the TN-C-S power distribution system, the neutral and the protective earth functions are combined to some
degree in a single conductor, a direct earth to the exposed conductive parts of the installation exists in part.
The connection is achieved through the PEN conductor.
Instruction book
2920 1728 05 93
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