Professional Development · Trades & Technical Skills · Protection Measures and Safety Systems

Protection Against Electric Shock – Classes and RCD Protection

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This topic examines the layered framework that BS 7671:2018+A2:2022 uses to protect persons and livestock against electric shock. It covers basic protection (insulation, barriers, enclosures), fault protection through automatic disconnection of supply and double/reinforced insulation, the three classes of electrical equipment (I, II, III), protective and separated extra-low voltage systems (PELV and SELV), and the role of 30 mA RCDs as additional protection in high-risk locations.

Inhaltsübersicht

  • The Framework of Protection Against Electric Shock
  • Basic Protection – Insulation, Barriers and Enclosures
  • Fault Protection – ADS, Double Insulation and Equipment Classes
  • SELV and PELV – Extra-Low Voltage Protection Systems
  • RCDs as Additional Protection – 30 mA Requirement
Protection Against Electric Shock – Classes and RCD Protection
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