Light switch at one end lights in the middle light switch at the other end and its simple. If the words on and off arent embossed on the switch and its one of two switches that control a single light or receptacle you have a three way switch.

How To Wire A 3 Way Switch Wiring Diagram Dengarden
Wiring a 3 way light switch for the staircase. That is to operate the load from separate positions such as above or below the staircase from inside or outside of a room or as a two way bed switch etc. A three way switch is a handy convenience to control a light from two locations such as at the top and bottom of a staircase. The most basic three way switch setup has two switches that connect and control one light fixture like switches on either end of a hallway staircase or large living area. Also the same wiring circuit diagram can be used for 2 way lighting or controlling electrical appliances from two different places by using two way switches. The most common way to wire a 3 way switch while want to light up of your staircase or hallway. And when a switch have 3 terminals thats called two way switch.
Dear staircase circuit can not be done using two terminals switches in electrical wiring when a switch have only 2 terminals we called this single way or one way switch. Wiring a 3 way light switch is certainly more complicated than that of the more common single pole switch but you can figure it out if you follow our 3 way switch wiring diagram. With a pair of 3 way switches either can make or break the connection that completes the circuit to the light. Trace the wires carefully in the diagram so you can connect them to the proper locations. In today basic electrical wiring installation tutorial we will discuss step by step method of staircase wiring installation by using 2 way switches spdt single pole double through switch. Wiring a 3 way light switch.
One light two switches wiring. So for controlling a light form 2 places you must buy 2 way switches from market. Here one lamp is controlled by two switches from two different positions. Also choose 12 3 3 wire romex with ground for short circuit. Our easy to follow 3 way wiring diagram changing from a single pole to a 3 way light switch allows you to turn on a light from multiple locations such as at the top and bottom of a staircase or both ends of a hallway. Staircase wiring is a common multi way switching or two way light switching connection.
How to install a 3 way light switch overview.