Core Terms
This term describes the maximum current, in amperes, that a conductor can carry continuously under its conditions of use without exceeding its temperature rating.
What is ampacity?
The conductors between the final overcurrent device protecting a circuit and the outlet(s).
What is a branch circuit?
A conductor intentionally connected to ground; in many AC systems this is the neutral conductor.
What is a grounded conductor?
A location not normally subject to dampness or wetness.
What is a dry location?
Equipment, materials, or services included on a list published by an organization acceptable to the authority having jurisdiction and evaluated for a specific purpose.
What is listed?
A point on the wiring system where current is taken to supply utilization equipment.
What is an outlet?
All circuit conductors between service equipment (or another source) and the final branch-circuit overcurrent device.
What is a feeder?
A conductive path that provides a ground-fault current path and connects normally non-current-carrying metal parts of equipment together and to the system grounded conductor or grounding electrode conductor.
What is an equipment grounding conductor (EGC)?
A location protected from weather and not subject to saturation, but exposed to moderate moisture—such as some roofed open porches or certain basements.
What is a damp location?
Recognizable as suitable for a specific purpose, function, use, environment, application, and so on, where the Code requires it.
What is identified (as applied to equipment)?
A general term that includes materials, fittings, devices, appliances, luminaires, apparatus, machinery, and similar items used as part of an electrical installation.
What is equipment?
A device designed to open and close a circuit manually and to open automatically on a predetermined overcurrent without damaging itself when properly applied.
What is a circuit breaker?
The conductor used to connect the system grounded conductor or equipment to a grounding electrode or to a point on the grounding electrode system.
What is a grounding electrode conductor (GEC)?
A location subject to saturation with water or other liquids, or exposed to weather in an unprotected location.
What is a wet location?
Conductive parts intended to be energized in normal operation.
What are live parts?
A load where the maximum current is expected to continue for 3 hours or more.
What is a continuous load?
Current above the rated current of equipment or the ampacity of a conductor; it may result from overload, short circuit, or ground fault
What is overcurrent?
Your crew installs a metal raceway system. The metal path must be intentionally connected so electrical continuity and conductivity are established. Name the Article 100 concept.
What is bonding (bonded)?
Capable of being reached quickly for operation, renewal, or inspection without needing to climb over/under obstacles, use portable ladders, or remove similar barriers.
What is readily accessible?
The necessary equipment—usually consisting of circuit breakers or switches and fuses, plus accessories—located near the point where service conductors enter a building and intended as the main control and cutoff of the supply.
What is service equipment?
A value assigned to a circuit or system to conveniently identify its voltage class—such as 120/240 V—even though actual measured voltage can vary.
What is nominal voltage?
Electrical equipment that uses electric energy for electronic, electromechanical, chemical, heating, lighting, or similar useful purposes.
What is utilization equipment?
A conducting object through which a direct connection to earth is established, such as certain rods, concrete-encased electrodes, or metal underground water pipe when it qualifies.
What is a grounding electrode?
A person who has the skills and knowledge related to electrical equipment and installations and has received safety training to recognize and avoid the hazards involved.
Who is a qualified person?
An electrical panel has a cover that prevents someone from accidentally touching energized parts inside. What Article 100 term describes the protection provided by the cover?
What is guarded?