Electrical Code Definitions

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

Bonding (Bonded) The permanent joining of metallic parts to form an electrically conductive path that will ensure electrical continuity and the capacity to conduct safely any current likely to be imposed.

Branch circuit The circuit conductors between the final overcurrent device protecting the circuit and the outlet(s).

Bus. A conductor, a group of conductors, in switchgear assemblies which serves as a common connection for two or more circuits.

Circuit Breaker. A device designed to open and close a circuit by non-automatic means and to open the circuit automatically on a predetermined overcurrent without damage to itself when properly applied within its rating.

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

Conductor. An object or type of material that can carry electricity along its length

Bare. A conductor having no covering or electrical insulation whatsoever.

Insulated. A conductor encased within material of composition and thickness that is recognized by this Code as electrical insulation.

Continuous Load. A load where the maximum current is expected to continue for 3 hours or more