Alternating Current The current that flows in cycles, traveling first One Direction (no pun intended), then reversing to the other direction, and so on. Our AC is 60 cycles per second, also called 60 Hertz (Hz). Current that changes direction 120 times per second.
Alternating Current Examples To the window… from the wall…
Direct Current The current in which electrons flow only in One Direction (again, no pun intended!). Electrons flow from the negative terminal to the positive terminal in an electrical circuit. Fixed polarity- direction of flow.
Circuit A controlled path for electricity to flow beginning at the source (usually a breaker), traveling to the consumer (ex. light) and back to the source. The colored wire goes to the consumer and the white wire “comes back” to complete the circuit Unless a complete circuit is made – the devices will not work Breakers and switches are usually used to control the flow
National Electrical Code The benchmark for safe electrical design, installation, and inspection to protect people and property from electrical hazards. The NEC addresses the installation of electrical conductors, equipment, and raceways. Updated and published every three years.
Series Circuit Has only one pathway for electricity to follow. If there is more than one device in the circuit, the electricity must flow through one device and continue on to the next device. Not normally used in houses. Christmas lights are sometimes wired in series. That is why if one bulb goes out the whole line goes out