The necessary equipment, usually consisting of a circuit breaker or switch and fuses, and their accessories, located near the point of entrance of supply conductors to a building.

A combination of elevation rod and brace, or footing placed on upper portions of structures, together with tip or point of used.

An integral, separate or self-contained unit which may contain one or more bulbs or fluorescent tubes.

An accessory such as a locknut, bushing, or other part of a wiring system that is intended to perform a mechanical rather than an electrical function.

A contact device installed at the outlet for the connection of a single attachment plug.

An enclosed channel designed expressly for holding wires, cables, or bus bars, with additional functions as permitted in the PEC.

That one equipment shall be “_______” of another equipment, one of the equipment specified shall be visible and not more than 15 m distant from the other.

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.

Operation of equipment in excess of normal, full load rating, or of a conductor in excess of rated ampacity which, when it persists for a sufficient length of time, would cause damage or dangerous overheating.

The maximum load consumed or produce by a unit or group of units in a stated period of time.

The ratio of the maximum demand of a system, or part of a system, to the total connected load of a system or the part of the system under consideration.

Operation for alternate intervals of (1) load and no load; or (2) load and rest; or (3) load, no load and rest.

The current in amperes a conductor can carry continuously under the conditions of use without exceeding its temperature rating.

A _______ is a disruptive discharge through insulation.

An approved, completely assembled metal troughing and fitting therefore, containing bare conductors intended for use as feeders, the conductors being suitably supported on insulators.

Rendered inaccessible by the structure or finish of the building. Wires in concealed, even though they may become accessible by withdrawing them.

A device or group of devices that serves to govern, in some predetermined manner, the electric power to the apparatus to which it is connected.

So constructed or protected that successful operation is not interfered with when falling drops of liquid or solid particles strike the enclosure at any angle from 0 to 15 degrees from the downward vertical unless otherwise specified.

A circuit in which one conductor or point (usually the neutral conductor or neutral point of transformer or generator windings) is intentionally grounded, either solidly or through a grounding device.

A tension member usually galvanized wire, having one end secured to a fixed object on the ground and the end attached to a pole, cross arm or other structural part which it supports.

A building or portion of a building in which one or more self-propelled vehicles carrying volatile flammable liquid for fuel or power are kept for use, sale, storage, rental, repair, exhibition, or demonstrating purpose.

A wire or cable extending sideways or at an angle to the general direction of the line that service wires either overhead or underground that short branches extended on poles at approximate right angles to the lines are also known as laterals.

A general term including material, fittings, devices appliances, fixtures, apparatus, and the like used a part of, or in connection with, an electrical installation.

The underground service conductors between the street main and the first point of connection to the service-entrance conductors in a terminal box or meter or other enclosure with adequate space, inside or outside the building wall.