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Wiring a old attic fan.

2K views 7 replies 4 participants last post by  Sfeyelectric 
#1 ·
I was given a old attic fan that I'd like to use to remove drywall dust from work space, I have built a box and have it all set up to use, but I can't seem to get it to turn on. I know it works, seen it before removed. It has 5 wires coming from the motor, 2 white, 1 red, 1 black, 1 green. It also has a old time transformer. The home owner removed the unit, so I don't know how it was wired up before, but know it was wired thru a wall switch. Any one have any ideas?

Thanks in advance for your help

Neil
 
#5 ·
most likely this is a two speed motor you can confirm this by checking the nameplate and see if it has two numbers listed for RPM.

To my best educated guess without seeing it:
Green IS ground
whites are likely to be neturals and can be connected together.
Red and black are the two speeds. Usually they are hooked to the traveler screws of a backward wired 3way switch to give control. ONLY ONE of these should be hooked up to power at any one time to avoid burning up the motor.

I hope this helps.
 
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