Originally Posted by MinerDoug
were you able to get the base good and secure on one stud?
Yes. I located the fan at a ceiling seam between the kitchen roof vent and the living room AC unit. The roof vent has two motors, one raises the cover, the other is the fan motor. I took the switched power lead for the original vent fan and ran that through a fan rotary switch I mounted in the new ceiling fan shroud.
On the fan motor base it has three mounting tabs. I put two of the tabs on the rafter and the third one into a piece of 1x4x6 I slid into place so the third screw would have just a bit more than 1/4 inch Luann to hold it. I drilled a 7/16 hole in the luann kind of between two of the mounting tabs and pulled some 16/3 SO cord. One wire becomes hot whenever the original fan switch at the kitchen cabinet is turned on. This wire goes to the rotary switch I mounted. From the rotary switch the power can be "OFF" "C/L1" "C/L2" "C/L1+L2".
Of the two remaining wires in the SO cord on is the (-) for the ceiling fan the the last wire goes back to the kitchen vent fan motor (L2 on the rotary).
I can run one or both fans this way. Kitchen vent fan is a shaded pole motor so current draw is negligible. New ceiling fan draws <1 amp at max draw.
I had to cut the trim where the Luann ceiling panels meet, I'm a better sparky than trim carpenter.