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Wiring & earthing guides

IEC 60364 and BS 7671 terms explained in plain language, with diagrams.

TN-C-S Earthing System: Detailed Explanation, Diagrams TN-C-S earthing system (or TN-C-S system): a distribution system in which one live part of a power source is earthed, exposed-conductive-parts of… 10 min read What Is an Electrical Enclosure? Definition, Using, Requirements Electrical Enclosure Definition Electrical enclosure: an enclosure providing protection against the foreseen dangers created by electricity [this term is defined in the… 4 min read Continuous Current-Carrying Capacity What Is Continuous Current-Carrying? Continuous current-carrying capacity (Iz) (or current-carrying ampacity in USA) is the maximum value of electric current which can… 13 min read What Is a TN-C Earthing System? A Detailed Explanation, Disadvantages, Diagrams TN-C earthing system (or TN-C system): a distribution system in which one live part of a power source is earthed, exposed-conductive-parts of… 9 min read Hazardous-Live-Part: Defininition, Meaning, Examples – Asutpp Hazardous-live-part: a live part that, under certain conditions, can give a harmful electric shock [this term is defined in the IEC 60050-195-2021].… 2 min read What Is the Difference Between Basic and Fault Protection? – Asutpp Two types of contact will result in a person receiving an electric shock. Direct contact with live parts involves touching a terminal… 1 min read

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Each calculator states the formula it applies and shows a worked example, so you never have to trust a number blindly. The guides quote the IEC 60364 and BS 7671 clauses they rely on.

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