Danger isolate main supply before opening electrical warning sign
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Isolate Main Supply Electrical Sign

Warns personnel to isolate the main electrical supply before opening equipment to prevent electric shock or injury

• Ensures electrical systems are safely isolated before access

• Ideal for plant rooms, electrical cabinets, maintenance areas, and industrial sites

• High-contrast yellow and black design for maximum visibility

• Available in durable materials suitable for long-term use

• Helps reduce risk of electrical accidents during servicing or inspection

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  • Description

    Product Overview

    This danger sign clearly instructs individuals to isolate the main electrical supply before opening equipment, helping to prevent serious injury or electric shock. Featuring a bold warning triangle with a lightning symbol and clear text, it is designed to communicate essential safety instructions in environments where electrical hazards are present.

    Where to Use

    • Electrical control panels
    • Plant and boiler rooms
    • Maintenance and service areas
    • Industrial and commercial facilities
    • Workshops and engineering environments

    Key Features

    • Clear "Danger" header with electrical hazard symbol
    • Direct instruction to isolate main supply before opening
    • High-visibility yellow and black colour scheme
    • Easy-to-read text for quick understanding
    • Supports safer maintenance and operational procedures

    Materials & Options

    • Rigid Plastic (1mm)
    • Rigid Plastic (2mm)
    • Self Adhesive Vinyl

    Compliance

    This sign supports compliance with UK health and safety regulations, including:

    • Health and Safety at Work etc. Act 1974
    • Safety Signs and Signals Regulations 1996

    Frequently Asked Questions

    Where should this sign be installed?
    This sign should be installed directly on or near electrical panels, enclosures, or equipment that require isolation before access.

    Is this sign suitable for outdoor use?
    Yes, when produced in appropriate materials such as rigid plastic, it is suitable for both indoor and outdoor environments.

    What does this sign indicate?
    It indicates a serious electrical hazard and instructs users to disconnect the main power supply before opening equipment.

    Data sheet
    WAE.21W-SA
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