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In building wiring, multiway switching is the interconnection of two or more electrical switches to control an electrical load from more than one location.A common application is in lighting, where it allows the control of lamps from multiple locations, for example in a hallway, stairwell, or large room.
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]
High-leg delta service is supplied in one of two ways. One is by a three-phase transformer (or three single-phase transformers), having four wires coming out of the secondary, the three phases, plus a neutral connected as a center-tap on one of the windings. Another method (the open delta configuration) requires two transformers.
Many circuits can be analyzed as a combination of series and parallel circuits, along with other configurations. In a series circuit, the current that flows through each of the components is the same, and the voltage across the circuit is the sum of the individual voltage drops across each component. [1]
In many applications, this jacket adds significant mechanical protection, making the cable much more rugged. Sometimes each individual connection or channel also has its own jacket to aid mechanical or electromagnetic protection. [7] Some multicore cables terminate in a multipin connector, often circular. Others split the cores into separate ...
Image credits: UdonDugong #3. I got Invisalign because I wanted my teeth straightened, but it made me lose a lot of weight too. Every time I ate I had to remove the Invisalign, then clean my teeth ...
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The average workweek for full-time employees is 47 hours. [16] Increasingly, employers are offering compressed work schedules to employees. Some government and corporate employees now work a 9/80 work schedule (80 hours over 9 days during a two-week period)—commonly 9-hour days Monday to Thursday, 8 hours on one Friday, and off the following ...