looks like cat5 but with more conductors. i paid for some wire when i ordered my hobbycnc steppers - it looks like cat5 also, but i think it has 6 conductors. the instructions say 22awg wire is sufficient, i hope so. the plan for me is 36 volt 3 amp per stepper. i've felt like hammered dog poo for the last week, maybe i can shake the sickness and get mine going this coming week. congrats on the start bfuller!