AC - Alternating Current. Electric current that rises from zero to a maximum in one direction, falls to zero and then rises to a maximum in the opposite direction, and then repeats another cycle.
Current - The rate of flow of electrical energy through a conductor or wire, comparable to the amount of water flowing in a pipe. Electric current is measured in amperes or "amps".
Fuse - A safety device consisting of a strip of wire that melts and breaks an electric circuit if the current exceeds a safe level.
Three-way Switch - A pair of switches wired to control the same fixture or group of fixtures.
Voltage - The force or "push" driving electrical energy through a conductor or wire that can be compared to the pressure of water in a pipe.
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