NEC TERMS 1
A single panel or group of panel units designed for assembly in the form of a single panel, including buses and automatic overcurrent devices, and equipped with or without switches for the contro} of light, heat, or power circuits; designed to be placed in a cabinet or cutout box placed in or against a wall, partition, or other support, and accessible only from the front.
Panelboard
Energized conductive components.
Live Parts
A complete lighting unit consisting of a light a source such as a lamp or lamps, together with the parts designed to position the light source and connect it to the power supply. It may also include parts to protect the light source or the ballast or to distribute the light.
Luminaire
The written consent of the authority having jurisdiction.
Special Permission
An enclosed channel of metal or nonmetallic materials designed expressly for holding wires, cables, or busbars, with additional functions as permitted in this Code. Raceways include, but are not limited to, rigid metal conduit, rigid nonmetallic conduit, intermediate metal conduit, liquidtight flexible conduit, flexible metallic tubing, fiexible metal conduit, electrical nonmetallic tubing, electrical metallic tubing, underfloor raceways, cellular concrete floor raceways, cellular metal floor raceways, surface raceways, wireways, and busways.
Raceway
A flammable liquid having a fash point below 38°C (100°F), or a flammable liquid whose temperature is above its flash point, or a Class I combustible liquid that has a vapor pressure not exceeding 276 kPa (40 psia) at 38°C (100°F) and whose temperature is above its flash point.
Volatile Flammable Liquid
The conductors and equipment for delivering electric energy from the serving utility to the wiring system of the premises served.
Service
Constructed so that moisture will not enter the enclosure under specified test conditions.
Watertight
Locations protected from weather and not subject to saturation with water or other liquids but subject to moderate degrees of moisture, Examples of such locations include partially protected locations under canopies, marquees, roofed open porches, and like locations, and interior locations subject to moderate degrees of moisture, such as some basements, some barns, and some cold-storage warehouses.
Location, Damp
Equipment, materials, or services included in a list published by an organization that is acceptable to the authority having jurisdiction and concemed with evaluation of products or services, that maintains periodic inspection of production of listed equipment or materials or periodic evaluation of services, and whose listing states that either the equipment, material, or service meets appropriate designated standards or has been tested and found suitable for a specified purpose.
Listed
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.
Overcurrent
That which is built or constructed.
Structure
One who has skills and knowledge related to the construction and operation of the electrical equipment and installations and has received safety training to recognize and avoid the hazards involved.
Qualified Person
Not connected to ground or to a conductive body that extends the ground connection.
Ungrounded
The conductor connected to the neutral point of a system that is intended to carry current under normal conditions.
Neutral Conductor
A building or portion of a building in which one or more self-propelled vehicles can be kept for use, sale, storage, rental, repair, exhibition, or demonstration purposes.
Garage
Constructed or protected so that exposure to a beating rain will not result in the entrance of water under specified test conditions.
Raintight
Constructed or protected so that exposure 1p the weather will not interfere with successful operation.
Weatherproof
Constructed, protected, or treated so as to prevent rain from interfering with the successful operation of the apparatus under specified test conditions.
Rainproof
Provided with a means to permit circulation of air sufficient to remove an excess of heat, fumes, or vapors.
Ventilated
A location not normally subject to dampness or wetness. A location classified as dry may be temporarily subject to dampness or wetness, as in the case of a building under construction.
Location, Dry
Equipment or materials to which has been attached a label, symbol, or other identifying mark of an organization that is acceptable to the authority having juris- diction and concerned with product evaluation, that maintains periodic inspection of production of labeled equipment or materials, and by whose labeling the manufacturer indicates compliance with appropriate standards or performance in a specified manner.
Labeled
The necessary equipment, usually consisting of a circuit breaker(s) or switch(es) and fuse(s) and their accessories, connected to the load end of service conductors to a building or other structure, or an otherwise designated area, and intended to constitute the main control and cutoff of the supply.
Service Equipment
The point of connection between the facilities of the serving utility and the premises wiring.
Service Point
Installations underground or in concrete ‘Slabs or masonry in direct contact with the earth; in locations subject to saturation with water or other liquids, such as vehicle washing areas; and in unprotected locations exposed to weather.
Location, Wet