By Thibault Margaux. Engine Wiring. Publised at Tuesday, January 23rd 2018, 16:16:00 PM. The internal combustion engine has seen a remarkable evolution over the past century. Before 1970 the evolution of engine design was driven by a quest for performance and an increase in octane in the fuel supply. Since then, however, the imperative was the need to meet new emissions and fuel economy regulations.
By Elvire Fernande. Engine Wiring. Publised at Tuesday, January 30th 2018, 18:25:31 PM. On the top of the piston, you’ll find three or four grooves cast into the metal. Inside the grooves piston rings are put in. The piston rings are the part that actually touch the walls of the cylinder. They are made from iron and come in two varieties: compression rings and oil rings. The compression rings are the top rings and they press outward on the walls of the cylinder to provide a strong seal for the combustion chamber. The oil ring is the bottom ring on a piston and it prevents oil from the crankcase from seeping into the combustion chamber. It also wipes excess oil down the cylinder walls and back into the crankcase.
By Thibault Margaux. Electrical Wiring. Published at Wednesday, January 31st 2018, 17:03:32 PM. The long thick cables of transmission lines are made of copper or aluminum because theyhave a low resistance.
By Faustine Arnaud. Engine Wiring. Published at Wednesday, January 31st 2018, 13:46:55 PM. I’ve never been a car guy. I just didn’t have any interest in tooling around under the hood to figure out how my car works. Except for replacing my air filters or changing the oil every now and then, if I ever had a problem with my car, I’d just take it into the mechanic and when he came out to explain what was wrong, I nodded politely and pretended like I knew what he was talking about.
By Morgane Seraphine. Electrical Wiring. Published at Wednesday, January 31st 2018, 12:59:53 PM. Whenever we flip a switch, plug in an appliance, or adjust a reading light, we interact with the electrical system in a house. A good electrician can make those interactions easier in a hundred little ways, so it's best to communicate your needs early—ideally after the house is framed and before the drywall or insulation goes up. That's when master electrician Allen Gallant, who has wired many This Old House TV projects, takes his customers on a job-site walk-through, showing where he plans to put switches, lights, and receptacles. "I'll even ask them if they're left-handed or right-handed," he says. "It makes a big difference when you're looking for the light switch." It's easy to make changes at this point in the process, but once the walls are closed in, any second thoughts become far more difficult and expensive to implement.
By Morgane Seraphine. Electrical Wiring. Published at Wednesday, January 31st 2018, 12:02:53 PM. Electricity distribution is the penultimate stage in the delivery (before retail) of electricityto end users. It is generally considered to include medium-voltage "less than 50 kV"power lines, electrical substations and pole mounted transformers, low voltage"less than 1000 V" distribution wiring and sometimes electricity meters.
By Manon Marianne. Electrical Wiring. Published at Wednesday, January 31st 2018, 06:36:11 AM. 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.
By Sebastien Abel. Electrical Wiring. Published at Wednesday, January 31st 2018, 06:29:09 AM. specialized construction work that is performed during the erection or reconstruction of buildings or structures intended for various purposes and that entails the installation of electric wiring and electrical equipment. The electric wiring may be overhead power lines, cable lines, current leads, or interior wiring. Examples of electrical equipment include electric machinery, distribution centers, and control consoles. In the USSR, electrical installation work is usually carried out in two stages.
By Olivier Danielle. Electrical Wiring. Published at Wednesday, January 31st 2018, 02:57:22 AM. A home’s electrical system is prone to wear and tear. Regular testing and evaluation of receptacles, switches, and breakers can prevent dangerous situations down the road. There are two electrical upgrades that should be installed to protect your home: ground fault circuit interrupters (GFCIs) and arc fault circuit interrupters (AFCIs). GFCIs protect against electrical shock caused by ground faults or leaking electrical current. These devices monitor the current in a circuit and interrupt or stop the flow of power to that circuit if a spike or loss of power is detected. In new construction, GFCI receptacles are required by code in bathrooms, kitchens, and garages, on outdoor outlets, and in crawl spaces or unfinished basements.
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