Cutler-Hammer GBK21P Ground Bar Kit, 8.14 in L, 5 in W, 21-Terminal, Aluminum/Copper

Bar wire holes are suitable for (1) #14-4 or up to (3) #14-10 aluminum or copper wire. Multiple wires in a single hole must be of the same size and material. Distance between mounting holes is 1-3/4. NOTE: Consult local code for correct application of gr ound bar kit for service entrance equipment. Kit contains one ground bar and two #10-32 x 5/8 self-threading screws. UL Listed.Bar wire holes are suitable for one #14-4 or up to three #14-10 aluminum or copper wire. Multiple wires in a single hole must be of the same size and material. Distance between mounting holes is 1-3/4 in. Consult local code for correct application of grou