What are some advantages of three-wire control circuits?
What will be an ideal response?
Three-wire control is used to a much greater extent throughout the industry than two-wire control because of its flexibility. Pilot control devices such as push buttons, float switches, and limit switches can be mounted in remote locations, whereas the motor starter can be located close to the motor it controls or in a control cabinet with other control components. Another advantage of three-wire control circuits is that, in the event of a power failure, they will not restart automatically when power is restored. This can be a major safety issue in many instances.
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