Some of the worst conductors of electricity include rubber, polymer and plastic. A bad electrical conductor is an object or material that does not allow electricity to flow freely through it. An insulator does not allow electric current to pass through it. Most metals, such as copper, are good conductors, whereas most other non-metal materials are bad conductors, or insulators.Continue Reading
Because a portion of the insulator can become electrically conductive if enough voltage is applied, there is no such thing as a perfect insulator. Where it requires much less electricity to get a much higher charge on conductors, it takes a lot of electricity to get a small charge on insulators. This property, known as the breakdown voltage of insulators, essentially makes them poor conductors. Insulators are commonly seen on plugs and cables. The outermost layer of most wires is made of an insulator, such as rubber or plastic. This insulator surrounds the conductor, which is usually some form of copper wire. Not only does this prevent the wire from easily breaking, it also prevents electrical shock.
Many power lines utilize ceramic insulators. Silicone rubber and reinforced plastic are some modern composite insulators. These types of insulators are cheap, light and excellent in polluted areas. However, they do not have the lifespan of glass and porcelain insulators.Learn more about Electrical
The Michigan Electrical Code includes licensing requirements for electrical inspectors, electricians and contractors and mandates prior permitting for adding, altering or changing a building's electrical conductors or equipment. Michigan's electrical code includes requirements that bonding jumpers must be wires, buses, screws or other suitable conductors made of copper or another corrosion-resistant material. Specifications dealing with protection against corrosion and deterioration require protective coating of all ferrous metal equipment and allow the use of enamel-protected equipment only in dry, indoor locations.Full Answer >
Three-phase electric power utilizes three conductors that each carry an alternating current, meaning the current first flows in one direction in a circuit and then reverses to flow in the other direction, of the identical voltage amplitude and frequency relative to a common reference. The common reference that power companies usually use is the earth, which serves as one of the wires in the power system. Three-phase motors are popular because they provide consistent voltage.Full Answer >
A wire-to-wire connector is a device, usually made of plastic, that is used to join electrical circuits together by creating a joint between two sections of wire. This serves to extend the flow of electricity wherever needed.Full Answer >
As of 2015, the average house in the United Kingdom uses between 2,000 and 4,900 kilowatt-hours of electricity per year. Factors such as the size of the home and weather conditions account for the range of usage.Full Answer >