By Olivier Danielle. Electrical Wiring. Publised at Sunday, January 07th 2018, 22:32:17 PM. Some old homes were designed to run off less power than the modern home. Most states have a 100 amp minimum requirement. Homes running under that service could consider an upgrade to bring them to between 100 and 200 amps, which could run upwards of $2,000. Homeowners should evaluate their power demands first. “A homeowner can have an electrician test the system with an amp meter while all the big loads are on,” says Holt. “If the draw is over 75-80 percent of the service size, you might consider an upgrade. Otherwise you should be fine.”
By Marthe Mathilde. Engine Wiring. Published at Friday, February 02nd 2018, 23:28:21 PM. Most camshafts extend through the top part of the engine block, directly above the crankshaft. On inline engines, a single camshaft controls both the intake and outtake valves. On V-shaped engines, two separate camshafts are used. One controls the valves on one side of the V and the other controls the valves on the opposite side. Some V-shaped engines (like the one in our illustration) will even have two camshafts per cylinder bank. One camshaft controls one side of valves, and the other camshaft controls the other side.
By Claudette Alice. Engine Wiring. Published at Friday, February 02nd 2018, 09:45:36 AM. 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 Claudette Alice. Engine Wiring. Published at Friday, February 02nd 2018, 05:43:02 AM. A joint team from Chrysler and the Center for Automotive Research at The Ohio State University recently developed a practical approach to maximizing drivetrain efficiency and reducing fuel consumption and carbon dioxide emissions. Together, engineers in industry and research, along with students, determined how to capture and effectively distribute the useful heat energy to the transmission and engine oils from a controls standpoint, requiring additional hardware such as a transmission heat exchanger and associated plumbing, and new software. Higher temperature oil is less viscous, so less torque is required for operation and the transmission and engine can operate at higher mechanical efficiencies.
By Thibault Margaux. Electrical Wiring. Published at Wednesday, January 31st 2018, 17:03:32 PM. 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 Wednesday, January 31st 2018, 13:46:55 PM. "We first needed to understand how much heat was available from the powertrain during various drive cycles and cold start conditions," he says. By simulating thermal components that control the powertrain heat, such as the electronic thermostat, cooling fans, grill shutters, and water valve, they determined the best way to distribute the available energy.
By Morgane Seraphine. Electrical Wiring. Published at Wednesday, January 31st 2018, 12:59:53 PM. Carefully tuck the wires into the box. Install the box cover, securing it with two screws. The cover must be a solid "blank" without holes. Restore power to the circuit by switching on the circuit breaker.
By Morgane Seraphine. Electrical Wiring. Published at Wednesday, January 31st 2018, 12:02:53 PM. Both GFCIs and AFCIs come with test switches and should be tested every thirty days. Testing a GFCI is straightforward: Press the “reset” button on the receptacle. Plug a lamp into the outlet and turn it on. The light should be on. Press the “test” button. The “reset” button should pop out and the lamp should turn off. Push the “reset” button once more; the lamp should turn back on. If the test does not work like this, the receptacle is faulty and should be inspected by a professional.
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