Replacing a 3-wire, 2-speed switch
Asked Dec 29, 2007, 11:52 AM
The fan in the fume hood above my stove is broken. I believe it's the switch so I need to replace it. The whole kitchen is over 35 years old, though and the fan is a dynavent. I believe the switch is soldered and don't know how to undo it to see the wiring of the switch. The switch is a push-button switch that reads, "1A 125V T" on one line, "3A 125V" on the next line. The fan had 2 speeds--slow and fast. The switch has 3 wires to it. My question is, do you think the switch would connect 2 wires (for example green and black) for the lower speed and then connect a different 2 (for example red and black) for the higher speed? In which case, if I cannot find a switch that reads exactly the same (I have yet to find one) then could I use a "4A 250V" 2-wire switch and wire it in series to have just a one-speed fan? Or are things more complicated than this? This is just my thoughts I've had one year of high school physics and about 3 weeks of electricity of that year of physics... lastly, looking at the switch, does it seem right that the electricity enters through the black and I would wire the red and green in series? I have attached 3 pictures in 1 jpeg document. Thanks for your help!