Electrical discrimination occurs when a protective device near a fault or short comes on and keeps the other circuits working properly. Discrimination can either partially block a fault from disrupting other systems or completely block it, depending on the type of protection device that is installed.
Fuses or circuit breakers are the main sort of protective devices used in homes. If a fuse blows or a breaker trips in one specific room or device, the rest of the home is protected from the issue that caused the reaction. Proper wiring of a house or building is imperative to ensure that the structure's protective devices will work properly to protect against faults.Learn More
Electrical load diversity factor is a ratio representing the sum of the individual maximum demands for each part or parts of the system to the maximum demand of the entire system or parts of the system. Another factor that designers consider is demand factor.Full Answer >
Resistance, or impedance, decreases electrical current per Ohm's law. Ohm's law gives current as a ratio of voltage to resistance: 1 volt flowing through 1 ohm of resistance produces 1 ampere of current. Resistance is the property of an object, and resistivity is the property of the substance of which the object is made.Full Answer >
Main electrical panel wiring refers to the wiring diagram of a main electrical panel, which houses the electrical power from the electric meter and circuit breakers. The main wiring usually consists of two thick black wires that comes from the utility company via the electric meter: the main circuit breaker and an earth-grounding wire. The grounding wire connects to a solid copper rod driven into the soil below the panel.Full Answer >
Electrical resistance in metals is caused by the temperature of the metal or impurities in the metal. Both increases in temperature and higher levels of impurities impede the flow of electricity through the metal material. The shape and size of the particular metal also influences its level of resistance to electrical flow.Full Answer >