AC power's main advantage over DC is that its voltage can be changed using a device called a transformer. A standard wall outlet in the United States is 110 volts transmitting currents at 60 hertz per second. European power systems use 220 volts alternating current at 50 Hz.What are the types of power outlets?
Most important classification of outlets is by voltage and amperage they are suited for. By these features there are four main types of outlets: 120 V, 15 Amp, NEMA 1-15 120 V, 20 Amp, NEMA 1-20 220-240 V, 15 Amp, NEMA 2-15 220-240 V, 20 Amp, NEMA 2-20 In US the most widely used type of outlets is 120 V, 15 Amp,...What color are electrical outlets?
Most electrical outlets require two conductors, not including the ground wire, which isn't really part of the circuit. One of the conducting wires -- the neutral -- is white; that color is mandated by the National Electrical Code. By convention, the other is usually black, but it could be red.Are electrical outlets different?
To the unobservant eye, all types of electrical outlets are identical . Rectangular shape, screw in the center, two faces with uneven eyes and a downturned mouth. Sound familiar? But if you take a look around, you'll notice slight variations. There are several types of electrical outlets commonly seen in the United States.