I'm replacing a ceiling fan and it has three wires as is common: black, white, and bare ground. I have a two-toggle wall switch. One switch makes the black wire hot (for the motor), and the other switch makes the white wire hot (for the integrated light). So it looks as if the white wire in the ceiling is used as a hot for the light rather than a neutral wire as is common.
From the main power, there are three wires:
Black wire has nut that is spliced to both the Dual Switch (that controls the ceiling fan) and the other switch which operates the upsidedown wall outlet.
White Wire is spliced to just the upsidedown wall outlet. (no connection to Ceiling Fan)
All three bare ground wires are connected together.
So the Dual switch that controls the ceiling fan has The Black Wire from the main power to the top of the switch, The other top wire at the ceiling fan Dual switch is the BLack wire that runs to the Ceiling Fan (assuming to run the fan light, and the Bottom wire is the White wire which appears to operate with the bottom switch (of the dual switch) when it is turned assumed for the fan motor.
Crazy thing is this is how the home builder (Beezer Homes) wired the home when new in 95). I remember the builder was originally suppose to install 3-toggle switches in two bedrooms. They only installed 2-toggle switches. They corrected the problem by install the dual switch in place of one of the single toggle switches.
The fan was wired with the House bare ground wire being utilized as the Fan's neutral White Wire (and that being connected to the mount ground wire. The houses Neutral is the hot wire for the fan motor. Black wires are connected as normal and for power to the fan's light.