FAN 3 WIRE COLORS
Color Codes for a 3-Wire Computer Fan | Techwalla
3-Pin Fan Connector. Running a low-voltage fan requires only two wires: one for the positive or "hot" lead and one for the negative or ground. A PC fan's wire colors are pretty consistent, with red almost invariably marking the positive and black marking the negative or ground.Author: Fred Decker
3-Wire Cooling Fan Monitor Circuit - ElectroSchematics
However two fans with 3-wire connectors may not have the same wire colors. Thus, instead of using the colors to distinguish the function, better try to study the internal wiring connection. Usually, yellow (or green) color wire is used in a 3-wire fan for the pulse output (tacho) connection.
Red, Black, White, Blue: What Each Ceiling Fan Wire Means
Red Wire. A ceiling fan usually consists of two main parts: the fan and a lighting assembly. The red or striped wire is the hot wire for the lighting fixture of the ceiling fan, so if your ceiling fan does not have a lighting fixture, it will only have the three other wires mentioned in the following sections.
Electrical Wiring Color Coding System
Opening up an outlet or light switch box, you might be confronted with a bewildering array of wires of different colorsk, white, bare copper, and other colors closely intermingle, yet each one has a specific purpose. Knowing the purpose of each wire will keep you safe and your house's electrical system in top working order.
Wire A Ceiling Fan
So instead of a 3-wire cable going to the fan, it must be replaced with a 4-wire cable. When taking down your old fixture you will be able to see if you have the correct cabling. If you are installing a fan where there is no previous fixture, then you'll be running a new circuit to