Gardner Bender 10-003HT WireGard High-Temp Screw Wire Connector, 100 Pack, Black TEMPERATUR RATING: 150C (302F) INDUSTRY STANDARD: Black color designates Hi-Temp rating COMFORTABLE GRIP for easy twist-on use and application EXTREME PERFORMANCE: in environments of extreme temperatures without failing to protect wire connection STANDARD RATING: 600V max in building wire and at 1000V max in lighting, fixtures/luminaries and signs UL LISTED: Canadian and U.S. requirements (connections rated at 300V Max and rated at 600V Max) WIRE RANGE: 3 #20 (Min) to 4 #16 with 1 #20 (Max) Available in two standard models Copper-to-copper connections only Connectors manufactured with high-temperature