SACA Electric Motor Control Systems 1 (C-202) Practice Test

Question: 1 / 400

What is the maximum voltage supplied by a typical residential wye-configured system?

120 VAC

240 VAC

In a typical residential wye-configured electrical system, the maximum voltage supplied to standard outlets is 240 VAC. This configuration utilizes three phases and a neutral, and in residential settings, it often runs on a split-phase system derived from a transformer. In this setup, the voltage between any one of the two phase lines and the neutral is 120 VAC, while the voltage between the two phase lines is 240 VAC.

This split-phase arrangement is common in North America, allowing the use of both 120 VAC for general household appliances and lighting, while providing 240 VAC for larger appliances like dryers and ovens. Other voltage levels such as 480 VAC or 600 VAC are generally found in commercial or industrial applications, not in typical residential settings. Therefore, the most appropriate maximum voltage for a typical residential wye-configured system is indeed 240 VAC.

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480 VAC

600 VAC

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