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Three-phase transformer with four-wire output for 208Y/120 volt service: one wire for neutral, others for A, B and C phases. Three-phase electric power (abbreviated 3ϕ [1]) is a common type of alternating current (AC) used in electricity generation, transmission, and distribution. [2]
So if A–B, B–C and C–A are all 240 volts, then A–N and C–N will both be 120 volts, but B–N will be 208 volts. Other types of three-phase supplies are wye connections, ungrounded delta connections, or corner-grounded delta [2] (ghost leg configuration) connections. These connections do not supply split single-phase power, and do not ...
An example delta-wye transformer schematic. A delta-wye transformer is a type of three-phase electric power transformer design that employs delta-connected windings on its primary and wye/star connected windings on its secondary. A neutral wire can be provided on wye output side. It can be a single three-phase transformer, or built from three ...
Lighting and general purpose receptacles are at 120 volts AC, with larger devices fed by three wire single-phase circuits at 240 volts. In commercial construction, three-phase circuits are often used. Common 3 phase configurations within a building are 208v/120 wye, 120/240 center tapped delta and 480v/277v wye. Lighting is usually fed by 277 V ...
Advanced Placement (AP) Art History (also known as APAH) is an Advanced Placement art history course and exam offered by the College Board in the United States.. AP Art History is designed to allow students to examine major forms of artistic expression relevant to a variety of cultures evident in a wide variety of periods from the present to the past.
Also in 2016, Quizlet launched "Quizlet Live", a real-time online matching game where teams compete to answer all 12 questions correctly without an incorrect answer along the way. [15] In 2017, Quizlet created a premium offering called "Quizlet Go" (later renamed "Quizlet Plus"), with additional features available for paid subscribers.
AP 3-D Art and Design is a three-dimensional (3-D) art course that holds many similarities to the 2-D course. The course deals with 3-D artistic applications such as metalworking, sculpture, computer models, and ceramics. Like AP Studio Art 2D, the focus is on the design of the artwork itself as opposed to its composition.
Wye level, an early optical level; Wye (rail), a term used in North American railroading equivalent to an English railway triangle; Wye fitting, used in piping and plumbing; Wye connection, used in three-phase electrical circuits; Wye interchange, or directional T interchange between two or more roads or highways