brian dulisse
12-12-2009, 2:39 PM
i've inherited an old (1946) delta drill press. the motor on it is a dunlop 1/3 hp model 6960 - a google search turns up nothing of interest; the plate indicates it was sold by sears, but i can't tell when.
in any event, the plug to the unit is a 2 prong (non-polarized) plug, so i want to replace it with a proper plug with a ground. when i open the housing up (not the motor housing; there's a separate housing that holds the switch and serves as a mounting point onto the dp itself), only 2 wires come from the motor to the switch, and then from the switch to the cord. the thing is, the fiber(?) insulators on the wires are colored white and green. i'm operating at the edge of my knowledge of wiring here - is it safe to assume that the green is hot, and the white is neutral? and given only 2 wires are coming out of the motor, how do i ground the unit (i.e., what do i attach the green wire in the cord to)?
in any event, the plug to the unit is a 2 prong (non-polarized) plug, so i want to replace it with a proper plug with a ground. when i open the housing up (not the motor housing; there's a separate housing that holds the switch and serves as a mounting point onto the dp itself), only 2 wires come from the motor to the switch, and then from the switch to the cord. the thing is, the fiber(?) insulators on the wires are colored white and green. i'm operating at the edge of my knowledge of wiring here - is it safe to assume that the green is hot, and the white is neutral? and given only 2 wires are coming out of the motor, how do i ground the unit (i.e., what do i attach the green wire in the cord to)?