Commercial electrical wiring generally uses three-phase power instead of single-phase power. In simple terms, this means cables have four or five wires instead of only two. This consists of three live cables, a neutral cable and an earth cable.
Civil engineering is a professional engineering discipline that deals with the design, construction, and maintenance of the physical and naturally built environment, including public works such as roads, bridges, canals, dams, airports, sewage systems, pipelines, structural components of buildings, and railways.
This course provides an introduction to the theory of transmission lines. Characteristic impedance is defined and used to derive equations for signal reflection and transmission at an impedance discontinuity. Discussion also covers matching networks, input impedance and S-parameters. This course was developed by Kathryn Leigh Smith, Asst. Prof. in the Department of Electrical and Computer Engineering at the University of North Carolina-Charlotte in partnership with Ansys.
A substation is a part of an electrical generation, transmission, and distribution system. Substations transform voltage from high to low, or the reverse, or perform any of several other important functions. Between the generating station and consumer, electric power may flow through several substations at different voltage levels. A substation may include transformers to change voltage levels between high transmission voltages and lower distribution voltages, or at the interconnection of two different transmission voltages.