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    guidance note 5 amendment 4
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    Guidance Note 5 | Amendment 4 | Protection Against Electric Shock | 10th Edition | BS 7671:2018+A4:2026

    SKU: 9781837240548
    Pre-order now. Official release date: 18 May 2026. *
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    Guidance Note 5 Amendment 4 10th Edition is updated to BS 7671:2018+A4:2026. A core safety reference covering protection against electric shock, including EFLI limits, Power over Ethernet and verification of site-applied insulation.

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    Description

    The guidance note 5 amendment 4 is the fully updated 10th Edition of the IET’s essential publication covering protection against electric shock in line with BS 7671:2018+A4:2026.

    It provides clear, practical guidance for specifiers, designers, contractors and inspectors on applying the safety requirements of BS 7671 in modern electrical installations.

    Key Amendment 4 Updates Include:

    • Power over Ethernet (PoE)
    • Maximum permissible measured Earth Fault Loop Impedance (EFLI)
    • Guidance on verification of site-applied insulation

    This publication is essential for ensuring installations are designed, installed and inspected safely and in full compliance with the latest Wiring Regulations.

    Product Details

    • Subject: Electrical Regulations
    • Publication Year: 2026
    • Pages: 170
    • ISBN-13: 978-1-83724-054-8
    • Format: Paperback (PBK)
    • SKU (recommended): 9781837240548
    • EAN: 9781837240548





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    Delivery info
    Pre-order this item today. It is expected by 18 May, and orders will be dispatched as soon as stock becomes available. You’ll receive confirmation once your order has been shipped.