Warning - Arc Flash and Shock Hazard Do Not Open Without Appropriate PPE - Safety Signs by Caledonia Signs

Alert personnel that electrical equipment poses serious risks of arc flash and electric shock. Opening panels, switchgear, or other energized units without proper personal protective equipment (PPE) can result in severe burns, electrical shock, or fatal injuries. The sign emphasizes that only trained personnel wearing flame-resistant clothing, face shields, insulated gloves, and other required PPE should access the equipment.

This sign should be placed on electrical cabinets, high-voltage panels, switchgear rooms, transformer enclosures, motor control centres, and other areas containing energized electrical systems. Positioning it directly on doors, removable covers, or at entry points ensures that anyone approaching the equipment is immediately reminded of the critical safety requirements. It is particularly important in industrial facilities, commercial buildings, utility installations, and any site with automated or high-voltage electrical systems.

The wording “Do Not Open Without Appropriate PPE” provides a direct, actionable instruction, while “Arc Flash and Shock Hazard” highlights the type and severity of the risk. This combination ensures that workers, contractors, and maintenance personnel understand both the hazard and the necessary precautions, reinforcing compliance with lockout/tagout procedures and other electrical safety protocols.

Overall, using this sign is essential for preventing serious injuries or fatalities, ensuring regulatory compliance, and fostering a culture of electrical safety. It clearly communicates the need for proper protective equipment before interacting with energized equipment, minimizing the risk of accidents in hazardous electrical environments.

Materials Explained

Below is a more detailed description of the materials this particular safety sign is available in. Helping you decide which sign option is most suitable for your application.

Rigid Plastic: This lightweight, gloss white PVC is resistant to weather, moisture, chemicals, and general wear and tear, making it suitable for harsh environments. Its smooth, solid surface allows for crisp printing of text and graphics, enhancing readability and visual impact. Businesses who choose Rigid Plastic signs benefit from fewer replacements and minimal maintenance, making it a practical investment for reliable and effective safety signs.

Self-Adhesive Vinyl: Self-adhesive vinyl is easy to apply and it is budget-friendly. Its adhesive backing allows for easy application to a variety of surfaces such as glass, metal, plastic, and painted walls, which simplifies installation and reduces setup time. Self-adhesive vinyl provides a clean, professional finish that suits many indoor environments including offices, retail, industrial sites, and vehicles. It is more affordable than many other material types and allows for custom shapes, colours, and graphics.