In the ceiling is one black, one white and a ground. How do I connect a new ceiling fan to these two wires? The ceiling fan has black wire, white wire, a blue wire and a green wire. We don't have green in the ceiling nor do we have a ground...knob and tube perhaps? So, can we connect this fan or not?Thanks!
White to white, black and blue to black, green to box.
balck to black and white to white...the green wire is the ground wire and the blue wire is for the lights if your fan has lights...hook the blue wire to the black to get power for lights
Personally, I would not connect anything to old knob-n-tube wiring. I would replace all of it with modern wiring. And as for a ceiling fan, not only does it require a box designed for ceiling fan support (which I doubt you have right now), it also requires 3 wires, served by a 14/3 Romex with ground. It will have a black, white, red, and bare ground. The red wire is for the light, black for the fan, white neutral, and bare copper to green ground. On the wall, you will need a double-gang box containing 2 devices. One is a standard light switch controlling the light. The other is a fan controller unit ($12.49 at Home Depot) for the fan speed. It has 4 click-stops, High, Medium, Low, and Off. It uses a standard double-switch wallplate. On the fan itself, cut the chains off. Be sure the fan is set to HIGH, and the light ON when you cut them.
