Heavy Duty Copper C Tap Grounding Connector for 6 to 4 AWG Run - 4-4 AWG Tap APPLICATIONS: Copper "C" Taps are range-taking compression connectors made from high conductivity copper alloy. Ideal for making tap or parallel copper connections from 8 SOL to 4/0 STR conductors. Provides consistent reliability with heavy wall construction that prevents relaxation of the joint after installation. Installation time is reduced because of its "C" shape. UL CU486A, 467 suitable for direct burial.