Type of ground network

Description

TN-ะก

TN system in which protective and neutral conductors are grouped into one conductor along the whole length of system.

TN-S

TN system in which protective and neutral conductors are isolated from each other.

TN-C-S

TN system in which protective and neutral conductors are grouped into one conductor at the advance section, but further protective and neutral conductors are isolated from each other.