THOMAS AND BETTS 54740 - Smith Electrical Supply description. 2 awg min. run conductor size; 1/0 awg max. run conductor size; 12 awg min. tap conductor size; 2 awg max. tap conductor size; c shape; copper conductor material; 600 v voltage rating; wr description. 2 awg min. run conductor size; 1/0 awg max. run conductor size; 12 awg min. tap conductor size; 2 awg max. tap conductor size; c shape; copper conductor material; 600 v voltage rating; wrought high conductivity copper body material; 1 tap(s); color code orange