A wire feeder, comprising: - a base assembly; - a mounting plate mounted to the base assembly, wherein the mounting plate includes a plurality of motor mounting hole patterns and a motor shaft hole; - a motor having a one of the plurality of motor mounting hole patterns, wherein the one motor mounting hole pattern aligns with at least one of the plurality of motor mounting hole patterns, wherein the motor is mounted to the mounting plate and a motor shaft extending through the motor shaft hole; and - an intermediate mounting plate, wherein the intermediate mounting plate is mounted to the base assembly and the mounting plate is mounted to the base assembly by being mounted on the intermediate plate, wherein the base assembly includes a drive gear connected to rotate with a gear hub, wherein the gear hub is connected to rotate with the motor shaft, wherein the gear hub includes a hollowed interior that receives the motor shaft, and wherein the hollowed interior and the motor shaft have matching keys, characterized in that the wire feeder further comprising an insulating cap having a non-cylindrical hollow interior, wherein the gear hub is attached to rotate with the drive gear, and wherein the gear hub has a non-cylindrical outer surface, and wherein the gear hub is disposed at least partially within the hollow interior such that the gear hub rotates with insulating cap, wherein the insulating cap, the intermediate mounting plate and the mounting plate are comprised of an electrical insulating material, wherein the base assembly can be at a first potential and the motor can be at a second potential without current flowing therebetween, wherein the drive gear has a first plurality of holes in a first pattern of holes and the insulating cap has second plurality of holes in the first end and in the first pattern, further comprising a plurality of screws each one of which extends through one of the first plurality of holes and one of the second plurality of holes, whereby the drive gear is affixed to the insulating cap. - a base assembly; - a mounting plate mounted to the base assembly, wherein the mounting plate includes a plurality of motor mounting hole patterns and a motor shaft hole; - a motor having a one of the plurality of motor mounting hole patterns, wherein the one motor mounting hole pattern aligns with at least one of the plurality of motor mounting hole patterns, wherein the motor is mounted to the mounting plate and a motor shaft extending through the motor shaft hole; and - an intermediate mounting plate, wherein the intermediate mounting plate is mounted to the base assembly and the mounting plate is mounted to the base assembly by being mounted on the intermediate plate, wherein the base assembly includes a drive gear connected to rotate with a gear hub, wherein the gear hub is connected to rotate with the motor shaft, wherein the gear hub includes a hollowed interior that receives the motor shaft, and wherein the hollowed interior and the motor shaft have matching keys, characterized in that the wire feeder further comprising an insulating cap having a non-cylindrical hollow interior, wherein the gear hub is attached to rotate with the drive gear, and wherein the gear hub has a non-cylindrical outer surface, and wherein the gear hub is disposed at least partially within the hollow interior such that the gear hub rotates with insulating cap, wherein the insulating cap, the intermediate mounting plate and the mounting plate are comprised of an electrical insulating material, wherein the base assembly can be at a first potential and the motor can be at a second potential without current flowing therebetween, wherein the drive gear has a first plurality of holes in a first pattern of holes and the insulating cap has second plurality of holes in the first end and in the first pattern, further comprising a plurality of screws each one of which extends through one of the first plurality of holes and one of the second plurality of holes, whereby the drive gear is affixed to the insulating cap.