Voltec Power & Lighting is a UL registered firm, with products listed for UL, cUL, and ULus. Our commitment to quality has earned us both ISO 13485 and ISO 9001 rating for quality control and excellence in manufacturing. This PVC triangle adapter with solid brass through contacts adapts RV 30 AMP to 15 AMP. Bulk. All Voltec products are backed by a limited lifetime warranty against defects in manufacture.