Hospital Specification Grade Straight Blade Tamper Resistant Receptacles - Back Wire & Side Wire. Arrow Hart’s feature rich line of Hospital Grade receptacles have been designed to meet and exceed the demanding requirements of UL 498 and Federal Specification WC-596 to provide a consistent means of connectivity where downtime can be critical. Provides compliance with 2011 NEC Article 406.12 that states that all receptacles installed dwelling units must be tamper resistant. “TR” designation provides visual identification.DESIGN FEATURES:- Tapered back wiring lead-in slots assist in gathering stranded wires for faster, more secure connections- Long, broad mounting strap helps reach large panel cutouts for code compliance- Automatic grounding system eliminates need for bonding jumper in grounded metal enclosure, provides redundant measure of ground continuity where jumper used- All terminal and mounting screws triple combination (Slot/ Phillips/Robertson) head for maximum installer flexibility- Screw-Catch feature on duplex devices speeds mounting of wallplates