The Square D by Schneider Electric Ground Bar Kit is an important accessory in your home or business electrical load center. The aluminum 12 Terminal Ground Bar Kit is used in Square D load centers, CSED devices and NQOD and NF panel boards, the kit has 12 terminals, each accepting (1) #14 - #4 copper wire or (1) #12 - #4 aluminum wire, or (2) #14 - #12 copper wire or (2) #12 - #10 aluminum wire.