Hazard – Danger trailing cables sign. Electrical hazard signage used to clearly mark dangerous areas in and around your building.Electrical hazard signage used to clearly mark dangerous areas in and around your building. Available in aluminium, rigid plastic and self adhesive vinyl (polycarbonate on request) to suit your needs. Available in a variety of sizes. All of our hazard safety signs are fully compliant with ISO 7010. Not exactly what you are looking for?