This video will explain the different electrical distribution schemes that exist, what they are like. TT SCHEME, TN SCHEME, TN-C, TN-S, and I T SCHEME.
Electrical distribution systems.
TT system
TN-C system
TN-S system
TN-C-S system
IT system
IEC 60364
How electrical distribution systems protect against indirect contact. Grounding
TT Distribution System
I T NEUTRAL REGIME ELECTRICAL DISTRUBUTION SYSTEMS

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