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Ohm |
The derived unit for electrical resistance or
impedance; one ohm equals one volt per ampere. The unit of
electrical resistance. Represented by R.
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Ohmmeter |
An instrument for measuring resistance in ohms.
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Oscillator |
An electronic device for converting dc energy
into ac energy.
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Outlet |
A point on the wiring system at which current is
taken to supply utilization equipment.
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Outline Lighting |
An arrangement of incandescent lamps or
electric-discharge lighting to outline or call attention to
certain features such as the shape of a building or the
decoration of a window.
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Overcurrent |
Any current in excess of the rated current of
equipment or the ampacity of a conductor. It may result from
overload, short circuit, or ground fault.
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Overload |
Operation of equipment in excess of normal,
full-load rating, or of a conductor in excess of rated ampacity
that, when it persists for a sufficient length of time, would
cause damage or dangerous overheating. A fault, such as a short
circuit or ground fault, is not an overload.
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