3
Normally 4, Red, green, white and black - but i have found ones with differant colo(u)rs.
7 WIRES!
8 wires
There are four wire pairs in CAT 5 cable. (Orange&White Orange, Blue&White Blue, Green&White Green, Brown&White Brown) Not in order of use
A Cat5 cable contains 4 pairs of 2 wires twisted together, making a total of 8 individual wires, however only 2 wire pairs (4 wires) are actually used for communication.