New York State Master Electrician Practice Exam

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How many switches are required to control a light fixture from five different locations?

One
Two
Three
Four

The correct answer is: Three

To control a light fixture from five different locations, a specific wiring configuration is required, typically involving a combination of three-way and four-way switches. In a standard setup, one needs a three-way switch at the beginning and the end of the circuit, and four-way switches in between each set of three-way switches. For five locations, you start with one three-way switch, followed by three four-way switches for the intermediate locations, and then end with another three-way switch. This adds up to a total of five switches: 1. One three-way switch at the first location 2. Three four-way switches, allowing the light to be controlled from multiple points 3. One three-way switch at the last location This configuration allows for complete control of the light from all five positions. Therefore, the total required number of switches needed to achieve this control is three.