Common Electrical Devices John Jones

Single Pole Switch Used to control a light from one location

3 way Switch Used to control a light from 2 locations – has 3 terminals Example: Light switch at each end of hall Use 2 3-way switches together Dark color terminal is “common” The 2 brass screws are called “travelers”

4 Way Switch Has 4 terminals Used with 2 3-way switches in order to operate the same lights from 3 separate locations

Receptacle Correct terminology for “plug in”

Service Entrance Panel The origin of the electrical service for a location. Sometimes referred to as the “breaker box”

Main Disconnect A switch that allows for the entire service to be turned off at one time. For example, if a house caught fire, you could turn off one switch and the whole house would go off Emergency shop disconnects like ours

Electrical Motors Device that turn electrical power into rotating mechanical energy