Safety glasses and goggles must be nonconductive, with no exposed metal parts. All glasses should meet the minimum ANSI Z87.1 (U.S.) and CSA Z94.3 (Canadian) standards.
NFPA 70E 130.7(C)(4). Eye Protection
Employees shall wear protective equipment for the eyes whenever there is danger of injury from electric arcs, flashes, or from flying objects resulting from electrical explosion.