Panels must be equipped with a cover (dead front) and be well secured to prevent people from touching live electrical components. Missing or damaged covers should be installed or replaced as soon as possible because unprotected panel openings increase the risk of electrical shock.
At first glance, the screws securing the cover in place appear to be just like any other screw; however, they are designed with blunt ends, so they do not damage or pierce the wire inside. When a screw is too long or pointed on the end, it can easily damage wiring causing a safety concern. Damaged wiring may cause serious injury including electrocution and even death.
Image 1: Panel cover
Image 2: Blunt screw vs pointed screw
Image 3: Damaged wire due to screw penetration