Splicer Block, 3 Pole, #8 to 2/0 AWG, 175 Amps Use these blocks to splice wires of up to #2/0 gauge. They are UL Recognized and CSA certified for up to 600 volts. The terminal blocks are made of zinc-plated aluminum, for use with aluminum or copper conductors. 3-pole blocks. One connection on each side.