I have a walkout basement, and the end near the door and windows is always (understandably) colder in winter than the inner end. I got to thinking I'd like to set up a small fan that I could just leave running to push air from the warm end to the cold end. I rooted around in my stacks of valuable stuff and found a couple of old 4" pancake fans. They look like they may have been salvaged from the soundproof enclosures that used to be used over/around printers way back in the day when computers were programmed with punch cards.
The problem is, they have four wires coming off in a pigtail that ends in a rectangular white plastic connector, and no indications of which wire does what. The fan motors are marked 115/230 volt, 50/50 cycle. Wires are red, black, blue and yellow. If I want to wire one up to run off husehold current, can anyone suggest which two wires to connect?
Since it is for alternating current, I think I'm safe in not worrying about getting the wires reversed. The fan will only rotate one way regardless of connection. Am I okay so far?
Based on nothing more than telephone wiring usage, I'm guessing that red and black are one pair, and blue and yellow the other pair. Red & black for 115-volt, maybe?
If I can figure out which pair is for 115-volt, what would happen if I connect the 230-volt pair to 115 volts? Will the fan burn itself out in short order because it's starving for electricity, or will it run happily at half speed (which I would like, because I'd have lower velocity and less noise)?
Any help will be appreciated.
