LV Distribution

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Earthing schemes

Earthing connections

Definition of standardised earthing schemes

Characteristics of TT, TN and IT systems

Selection criteria for the TT, TN and IT systems

Choice of earthing method - implementation

Installation and measurements of earth electrodes

The installation system

Distribution switchboards

Cables and busways

External influences (IEC 60364-5-51)

Definition and reference standards

Classification

List of external influences

Protection provided for enclosed equipment: codes IP and IK

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