By Thibault Margaux. Electrical Wiring. Publised at Wednesday, March 21st 2018, 21:31:48 PM. The first stage, which coincides in time with general construction work, includes the installation of fasteners or inserts in structural elements for the subsequent attachment of electrical equipment and structures for the installation of electric wiring. It also includes the installation of conduits for electric wiring in the foundations and floors of buildings or structures and the installation of wall sockets for outlets and switches. In the first stage, the preassembly of electrical equipment and wiring structures, the fabrication of conduit sections, and the board lacing of wires and cables for lighting and other circuits are carried out away from the construction site in specially equipped electrical-installation prefabrication shops.
By Claudette Alice. Electrical Wiring. Publised at Tuesday, March 20th 2018, 22:14:21 PM. Electrical codes began in the 1880’s at the same time the first extensive wiring was being done. In 1897, the National Fire Protection Association established the National Electric Code (NEC). The National Fire Protection Association was a group of Insurance companies that were concerned about the potential danger inherent in faulty electrical wiring. They had cause for concern. Early wire was bare or covered with cloth. There was little understanding of the need for insulation.
By Elvire Fernande. Electrical Wiring. Publised at Tuesday, March 20th 2018, 21:47:16 PM. High voltage transmission lines carry electricity long distances to asubstation. From this substation, electricity in different power levels is used to runfactories, streetcars and mass transit, light street lights and stop light, and is sent toneighborhood. When electricity enters "example house", it must pass through a meter andgoes through a fuse box. The fuse box protects the house in case of problems. When afuse "circuit breaker" ³blows´ or ³trips´ something wrong with an appliance or somethingwas short circuited.
By Marthe Mathilde. Engine Wiring. Published at Tuesday, January 23rd 2018, 13:57:19 PM. Automakers are improving fuel economy by exploiting a new controls approach that uses the waste heat from vehicle engines. Currently, up to 65% of the heat energy produced in internal combustion engines, whether gasoline or diesel, is wasted. Typically, the powertrain or engine dissipates the heat by convection, where it is carried to the cooling circuit or lost out of the tailpipe in exhaust gases.
By Manon Marianne. Engine Wiring. Published at Tuesday, January 23rd 2018, 05:58:08 AM. Stability and control have been major roadblocks to the implementation of many advanced combustion modes. Many low-temperature combustion modes such as GCI and RCCI operate on the edge of stability—in other words, at conditions under which very small variations in engine boundary conditions (such as intake temperature) may result in unintended excursions that result in undesirable emissions, reduced efficiency, and the potential to destroy the engine or emissions control system. One can imagine the challenge of these types of combustion modes under ever-changing conditions of a real-world drive cycle where a single unintended excursion could be catastrophic. Meeting that challenge requires a control system which is predictive for avoidance rather than reactive after the occurrence of a potentially damaging event.
By Thibault Margaux. Electrical Wiring. Published at Tuesday, January 23rd 2018, 04:47:11 AM. Materials used in wire have varied over the years. Copper has always been the first choice because it is such a good conductor and is very flexible. In the 1960 to 1970’s, aluminum wire became popular due to the rising cost of copper. Insulation was usually rubber although rubber tended to corrode due to exposure to moisture and air. PVC compounds are now used most commonly as wire insulation. Insulation is made in different colors to identify wiring circuits in a system.
By Faustine Arnaud. Engine Wiring. Published at Tuesday, January 23rd 2018, 03:50:08 AM. It wouldn’t be until 1860 that a reliable, working internal combustion engine would be invented. A Belgian fellow by the name of Jean Joseph Etienne Lenoir patented an engine that injected natural gas into a cylinder, which was subsequently ignited by a permanent flame near the cylinder. It worked similarly to the gunpowder atmospheric engine, but not too efficiently.
By Marthe Mathilde. Engine Wiring. Published at Tuesday, January 23rd 2018, 01:43:28 AM. Over the past several years, road transportation has seen some significant advances in what are considered alternative technologies. Energy storage, electric drive systems, and fuel cell technology all seem to be poised to find a significant place in the automotive marketplace. But it would be a mistake to believe that such technologies will completely sweep aside what has come before. Instead, the internal combustion engine will continue to be integral to the transportation of people and goods for the foreseeable future.
By Thibault Margaux. Engine Wiring. Published at Sunday, January 21st 2018, 07:13:22 AM. The crankshaft is what converts the up and down motion of the pistons into a rotational motion that allows the car to move. The crankshaft typically fits lengthwise in the engine block near the bottom. It extends from one end of the engine block to the other. At the front of the end of the engine, the crankshaft connects to rubber belts which connect to the camshaft and delivers power to other parts of the car; at the back end of the engine, the camshaft connects to the drive train, which transfers power to the wheels. At each end of the crankshaft, you’ll find oil seals, or “O-rings,” which prevent oil from leaking out of the engine.
By Olivier Danielle. Electrical Wiring. Published at Saturday, January 20th 2018, 23:55:01 PM. Electrical installation work is mechanized through the use of general-purpose construction machinery—for example, lift trucks, hoists, and truck cranes—and of specialized electrical-installation machinery, devices, and tools. The time required for electrical installation work is reduced and the productivity of labor in such work is raised primarily through the use of industrial methods of installing electrical equipment and through the delivery to construction sites of structures for the installation of wiring and elements of electric wiring in consolidated subassemblies and units, which are fabricated and assembled in electrical-installation prefabrication shops. The level of industrialization of electrical installation work is due in large part to the output by industry of complete sets of electrical equipment and of electric wiring that can be easily installed and adjusted.
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