0 All boxes shall conform to the latest edition of the National Electrical Code (NEC) NFPA70 and the applicable NEMA Standards. The boxes shall also be UL listed for the application, per UL 514A. A surface mount enclosure is a box that protects electrical parts like wiring or devices. Unlike flush-mount or recessed enclosures, which are. Conduit - PVC Type 40 (Schedule 40) rigid, conforming to ANSI, NEMA specifications and each length UL labeled. Exterior use when encased in 3 inch concrete. An electrical enclosure is a purpose-built cabinet designed to house electrical and electronic devices, providing the required protection to keep operators/personnel safe from electrical shock hazards and devices protected from hazardous environments as well as accidental damage. they inspect to the same standards, and you must fix stuff, but no fines.