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IET Guidance Note 5: Protection Against Electric Shock (BS 7671:2018+A4:2026)

IET
SKU: IETGN59TH
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Key Features
  • Shock protection guidance aligned with BS 7671:2018+A4:2026
  • Updated for PoE, EFLI limits and site-applied insulation checks
  • Practical reference for design, install and inspection teams

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Description

IET Guidance Note 5: Protection Against Electric Shock (BS 7671:2018+A4:2026)

IET Guidance Note 5: Protection Against Electric Shock (BS 7671:2018+A4:2026) focuses on one of the most fundamental objectives of electrical design and installation: preventing electric shock. It provides practical guidance for specifiers, designers, contractors and inspectors, helping them apply BS 7671 requirements consistently to improve safety, compliance and reliability across electrical installations.

Aligned fully with BS 7671:2018+A4:2026, this guidance note explains how to interpret and apply shock protection measures in real world scenarios, supporting better decisions during design, installation and verification. It’s also a valuable reference during inspection and testing, where correct interpretation of results and protective measures is essential.

Updates include guidance covering Power over Ethernet (PoE), maximum permissible measured earth fault loop impedance (EFLI), and clear direction on the verification of site-applied insulation, supporting safe installation practices and accurate compliance checks across modern systems.

Key Features

  • Protection against electric shock guidance aligned with BS 7671:2018+A4:2026
  • For specifiers, designers, contractors and electrical inspectors
  • Clear guidance on applying BS 7671 shock protection requirements
  • Includes updated guidance on Power over Ethernet PoE
  • Guidance on maximum permissible measured earth fault loop impedance EFLI
  • Guidance on verification of site-applied insulation
Specification
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  3. IET Guidance Note 3: Inspection and Testing (BS 7671:2018+A4:2026)
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