Commercial Specification Grade Straight Blade Receptacles - 15A-125V, NEMA 5-15R. Engineered for safe, reliable performance, these UL 498 and Federal Specification WC-596 listed devices provide maximum durability in a wide variety of applications while providing installation efficiency to help finish the job on time. Tamper resistant receptacles provide compliance with 2014 NEC® Article 406.12 which states that all 15A and 20A, 125V/AC receptacles installed in dwelling units must be tamper resistant.