(commercial power) The electric power that an electric power utility company supplies its customers.

(aluminum conductor, steel reinforced) A conductor that has a steel core surrounded by stranded aluminum wires.

A power electronic device that eliminates harmonics.

Describes power lines or telephone lines or cables installed above ground on poles or overhead structures.

An electric current that reverses (or alternates) its direction at regular intervals. Its magnitude begins at zero, increases in value and reaches a maximum value before returning to zero and continuing downward to a negative peak value before increasing in value again. Since the current flows in the positive direction for the same amount of time that it flows in the negative direction, the average value of the current flow equals zero. This cycle repeats itself continuously. The number of such cycles per second equals the frequency in hertz, i.e., 60 cycles per second in the United States and 50 cycles per second in Europe and Asia.

An electrical test instrument that measures current in a circuit.

The amount of current expressed in amperes that a device or conductor can carry.

The unit of measurement for the rate of flow of electrons (coulombs per second), or current, through a wire, similar to the flow of water through a pipe. One ampere equals...