Linergy NEMA sectional terminal blocks are for terminating wires in a control panel and are designed to NEMA standards. This terminal block has a box lug connector for use with solid or stranded copper wires from #22 through #10 AWG. Each box lug terminal is approved for use with various wire combinations. Each lug accepts 1 # 10 AWG, 1 #12 AWG, 1 #14 AWG, 1 or 2 #16 AWG, 1 or 2 #18 AWG, 1 to 5 #20 AWG or 1 to 8 #22 AWG wires. The nylon block is molded in red. This block is UL component recognized and CSA certified for up to 30 ampere up to 600 VAC or VDC.