Warning - Arc Flash / Shock - Isolate before Opening Cover - Safety Signs by Caledonia Signs

Alert personnel that electrical equipment or panels pose serious risks of arc flash and electric shock. Opening covers of energized equipment without proper isolation can result in severe injury, burns, or death. The sign communicates that all energy sources must be de-energized and verified before any access or maintenance is attempted.

This sign should be placed on electrical switchgear, control panels, transformer cabinets, motor control centres, and other high-voltage or energized equipment. It is most effective when positioned directly on or near the equipment, especially on doors, removable panels, or access points where personnel might attempt to open covers. This ensures that anyone approaching the equipment is immediately reminded to follow proper isolation procedures before entry.

The wording “Isolate Before Opening Cover” provides a clear and actionable safety instruction, while “Arc Flash and Shock Hazard” highlights the severity of the risk. This combination ensures that workers, contractors, and maintenance personnel understand both the type of hazard and the required preventive measure, encouraging strict adherence to electrical safety protocols.

Overall, using this sign is critical for preventing serious injuries, maintaining compliance with occupational health and safety standards, and fostering a culture of electrical safety. It clearly communicates the need for proper isolation and PPE, minimizing the risk of accidents when accessing high-voltage or energized electrical equipment.

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.