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Article 100 (Definitions) has been split into three parts.

This room air conditioner has been installed where it is capable of being reached for operation, renewal, and inspection.

An &ldquo;attachment fitting&rdquo; provides both electrical and mechanical connections to the mounting receptacle and locking support.

A bathroom is an area with a sink (basin) and one or more of the following: a toilet, a urinal, a tub, a shower, a bidet, or similar plumbing fixtures.

The main bonding jumper is connecting the grounded circuit conductor, the equipment grounding conductor busbar, and the supply-side bonding jumper to the service enclosure.

The supply-side bonding jumper ensures the required electrical conductivity between metal parts required to be electrically connected.

Class 1, 2 and 3 circuits are commonly used for remote control, signal and power limited circuits.

Equipotential planes are required by Article 547 in agricultural areas with concrete floors where livestock is kept.

New Figure 100.1 in the NEC.

This luminaire was field evaluated after the inspector noticed that it was not listed. NFPA 790 establishes competency of an FEB who performs field evaluations of products.

Based on the new definition, is this room considered habitable?

A &ldquo;laundry area&rdquo; is area containing or designed to contain a laundry tray, clothes washer, or clothes dryer.

A messenger wire is a wire that is run along with or integral with a cable or conductor to provide mechanical support for the cable or conductor.

PV systems convert solar energy into electric energy.

The prime mover is the machine that supplies the mechanical horsepower to a generator.

How many total receptacles are shown here?

Normal maintenance within a facility on this draw-out type circuit breaker is not considered reconditioning.

The 2020 NEC requires a disconnecting means to be marked to identify the source of supply.

Service equipment at other than dwelling units shall be legibly marked in the field with the available fault current.