Northeastern Apprenticeship and Training (NEAT) 3-1 Practice Test 2025 - Free Apprenticeship Practice Questions and Study Guide

The voltage measured across a single winding or phase is known as phase voltage. This term specifically refers to the voltage value that exists across one phase of a multi-phase system, such as a three-phase electrical system. Each phase in such a setup operates independently, and the phase voltage is what is present across each individual coil or winding.

Understanding this concept is crucial in electrical engineering and power distribution, as it helps in determining how devices will operate safely within the system. In a three-phase system configured in a wye (or star) formation, the phase voltage is typically lower than the line voltage, which is the voltage measured between any two of the three phases.

The other terms refer to different aspects of electrical systems. Line voltage applies to the voltage between two phases or lines, while delta voltage is a term used in delta-configured systems that also deals with the voltage encountered but is not specific to a single phase. Wye voltage is not a standard term and can lead to confusion, as it generally refers to configurations rather than specific voltages.