Question: what is the difference between 14/2 and 14/3 wire?
Answer: 14–2 (said fourteen two) wire actually contains three wires. ... 14–3 contains 4 wires: one ground, one neutral and two hot wires (one black and one red). Fred is correct that a 14–3 wire should be used for what is called a three way switch, but it can be used in several other places as well.