Was asked me to connect a blower fan (not un-like a rather medium sized blower wheel from a 5 Ton A/C air-handler. I suspect that is exactly what it is!!? It is being utilized to exhaust air to the outside for a bed-room, installed about 8 feet high in a small open loft of sorts. The previous owner has removed the control switch for some reason. The motor has a black, a red, and a white wire ( 12 awg). I did confirm the operation of the motor. White to black =13 amps. White to Red= 9 amps. Can I safely hook up this motor via a new switch? I don't have access to visibly see the nomenclature plate for the motor. There is no duct system, the fan just expells the air directly to the outside.(out-side wall cut-out) If this is indeed just a A/C blower motor/wheel that the previous owner installed, might there be the possibility of a run-away motor speed effect of any sort. (being without any duct system, hence no static pressure. thanx in advance.