UL Products Copper and aluminum cables With over 125 years of testing and certifying, UL is the largest, oldest and most recognized laboratory listed and a mark for cables in the USA. Contact Us View Inventory AC-THH (BX) Copper Conductors UL 1424, UL 2256, UL 66, UL 83, RoHS. Product Details HCF – Copper Conductor UL 1424, UL 2256, UL 66, UL 83, RoHS. Product Details Fire Alarm UL 1424, UL 2256, UL 66, UL 83, RoHS. Product Details MC THHN/THWN Conductor UL 1569, UL 83, UL 2256,RoHS. Available in copper and aluminum. Product Details MC-XHHW-2 Aluminum Conductor CSA 239-17. Approved for use in smart buildings. Product Details