Electrical Exam Term
Single-Phase Power
An AC power supply system using one phase of alternating current, providing 120V and 240V in typical residential applications.
Detailed Explanation
Single-phase power is delivered to most residential buildings via two hot conductors (each 120V to neutral) and a neutral conductor. The two hot legs are 180 degrees out of phase, providing 240V between them for large appliances like dryers, ranges, and water heaters. Single-phase is adequate for most residential and small commercial loads.
Premium Study Material
Don't just memorize terms.
Master the exam.
Get access to 650+ exam-like questions, detailed explanations, and specific state law-supplements for your state.
Pass Guarantee
State-Specific Content
Unlimited Practice Tests
Instant Feedback
Practice QuestionEasy
Which of the following best describes the concept of Single-Phase Power?
Start Practicing →