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The NEC definition of listed matches the definition of listed found in the NFPA Regulations Governing Committee Projects. See definitions of approved, authority having jurisdiction (AHJ), identified (as applied to equipment), and labeled. Live Parts. Energized conductive components. The definition of live parts is associated with all voltage levels, not just voltage levels that present a shock hazard. Location, Damp. Locations protected from weather and not subject to saturation with water or other liquids but subject to moderate degrees of moisture.
2 for a definition of wet procedure locations in a patient care area. 28. Luminaire. A complete lighting unit consisting of a light 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. A lampholder itself is not a luminaire. ” Luminaire is the term specified by IESNA, the ANSI/ UL safety standards, and the ANSI/NEMA performance standards for lighting products previously referred to as “light fixtures” in the United States.
Either of the two terms bonding conductor or bonding jumper may be used. The term bonding jumper may be interpreted to imply a short conductor. However, some bonding jumpers may be several feet in length. The primary purpose of a bonding conductor or jumper is to ensure electrical conductivity between two conductive bodies, such as between a box and a metal raceway. Bonding jumpers are particularly important where a box has either concentric- or eccentric-type knockouts. These knockouts can impair the electrical conductivity between metal parts and may actually introduce unnecessary impedance into the grounding path.