4 Way Electrical Switches
Four-way electrical switches are essentially just expanded versions of three-way electrical switches. They add a third way to turn a light or electrical device on and off, and usually work in conjunction with two three-way switches.
Each three-way switch has three terminals to connect the wiring. The first three-way switch is connected to the power source by one terminal and the second three-way switch by the other two. That second three-way switch then has a free terminal that extends to the light or device. The configuration allows either of the two switches to complete the connection from light to power source, and thus turn the light off or on.
Four-way electrical switches are basically placed between the two three-way switches. They have four terminals--two leading to one three-way switch and two leading to the other. When installed in that fashion, they form a cross circuit, which the toggle can turn off and on (thus making and breaking the electrical connection). The result is a light switch with three separate toggles in three separate locations.
Supplies of Four-Way Electrical Switches Can Be Ordered in Bulk
Wiring a four-way electrical switch is common practice for electricians, but it takes the proper know-how
"...Wiring a four-way electrical switch is common practice for electricians, but it takes the proper know-how."
, which means most homeowners will leave it to the professionals. Because it’s a common service, many electricians need bulk supplies of four-way toggle switches and similar equipment. Electrical Industries ships out wholesale orders online, and these electrical supply experts are happy to answer questions if you call 313-790-3000 or email firstname.lastname@example.org.