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    Electrical fire prevention and safety tips for buildings

    In England, the percentage of primary fires in not-residential buildings (commercial buildings, offices, retail premises, hospitals, education premises) due to electrical causes are slightly over 25%.

    Read the guide
  • Electrical fire protection begins with prevention

    Primary fires are defined as fires occurred in a not-derelict building, or involving fatalities/casualties/rescues or fire attended by five or more pumping appliances (1).

    • In 2017/2018, 20 people died and 994 were injured in not residential buildings because of primary fires. Electrically ignited fires were responsible for 2 deaths and 139 injuries (1).
    • A recent statistic published by the Association of British Insurers (ABI) indicate that the insured cost of commercial fires in the United Kingdom in 2008 was £ 1.3 billion, a 16% increase on the previous year. Commercial fire damage reached £ 865 million in 2008, up 15% on 2007 figures (2).

    (1): Source UK Government.
    (2): Source Bureau Veritas, “Business Sprinkler Alliance - Assessing the role for fire sprinklers".

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The risk areas for electrical fires in commercial buildings

  • Low-voltage switchboards

    Fire-risk characteristics that can be found in low-voltage (LV) main and secondary switchboards include: high intensity in normal operation, high short-circuit current, high density, bare busbar in compartments which create a T° rise concern, power connection issues and the possibility of internal arc faults.

    The control panel of a machine with a high number of connections, switches, auxiliary supplies, transformers and — in particular — variable speed drives, also needs to be carefully designed and manufactured to mitigate the risk of electrical fires.

    Schneider Electric’s solutions include:

  • Power and distribution circuits

    An insulation failure between a line conductor and earth in – for example, dusty and humid environments – can lead to a low-intensity arc fault that the line conductor withstands, but remains high enough to start a fire. Some tests have shown that a fault current as low as 300 mA can induce a real risk of fire.

    A polluted and damp insulation surface can enable small electrical discharges, causing carbon deposits that increase conductivity. If the current leak exceeds 300 mA, the carbon deposits and insulation can quickly ignite and cause a fire hazard.

    To ensure your power and distribution circuits are protected against fire: Residual current devices (RCDs) can be effective in protecting against these hazards as they sense leakage currents below 300 mA.

    Schneider Electric offers a number of solutions including:

  • Final distribution board and circuits

    Final distribution and final circuits present the same risks as described in power and distribution circuits, but in addition, due to the quantity of connections, the low cross-section area and the type of cable installation method (less mechanical protection), the risk of damaged cables is higher than in power and distribution circuits.

    According to the international IEC60364 standards series and local related standards, the use of RCDs with sensitivity below 300 mA to protect against earth leakage current is recognized as effective protection against the risk of fire caused by insulation failure.  

    Schneider Electric produces three categories of RCDs – earth leakage add-on RCDs, RCCBs and RCBOs – that can be used in secondary and final switchboard installations:

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Help prevent an electrical fire in your installation

Learn how to go above and beyond electrical installation standards. Our complimentary electrical fire prevention guide considers the risk of fire caused by electrical currents that fall below overcurrent protection thresholds. It focuses on the latest fire safety solutions to help mitigate such hazards in both new and existing installations in commercial buildings. Download now

Explore fire prevention solutions and help enhance safety

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No matter your role, our software can help you gain visibility to mitigate electrical fires for your most important assets or facilities. Find out more

Partnerships for every building phase

Whether you design, build, or install electrical distribution products in commercial buildings, Schneider Electric can help you do your job faster and better. Our partnership programs offer exclusive trainings, webinars, tools, resources and more.
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    IoT-connected solutions ready to improve every aspect of your power distribution system. Take total control with real-time data and smart analytics for predictive maintenance.

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    The Schneider Electric Partner Program provides exclusive software, tools and educational resources you can use to stay on top of the latest trends and ahead of the competition.

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