What article in the NEC covers branch circuits?

Article 210
Article 210, “Branch Circuits. NEC 2011, Article 210, “Branch Circuits,” in Chapter 2, “Wiring and Protection,” covers branch circuits except for those that supply only motor loads. The ratings for branch circuits are 15, 20, 30, 40, and 50 A.

What is multiwire branch circuit?

A multiwire branch circuit is a branch circuit with a shared neutral. This means there are two or more ungrounded (hot) phase or system conductors with a voltage between them and a shared neutral.

What is Article 210 in the NEC?

Article 210 applies to all branch circuits except motor loads. Multiwire branch circuits are permitted. They can only supply line to neutral load, except if it supplies one piece of equipment or if all ungrounded conductors of the circuit are opened by the overcurrent device simultaneously.

Which NEC article regulates the installation of branch circuits?

Article 225 provides installation requirements for outside branch circuits and feeders that run on (or between) structures or poles (Fig. 1). The NEC differentiates between buildings and structures, but for convenience we’ll refer to both of them as structures.

What is Article 300 of the NEC?

Article 300 contains the general requirements for all wiring methods included in the NEC. This Article is primarily concerned about how you install, route, splice, protect, and secure conductors and raceways.

What is Article 90 of the NEC?

National Electrical Code Summary: Article 90 — Introduction. (A) says the purpose of the NEC is the practical safeguarding of people and property “from hazards arising from the use of electricity.” (B) distinguishes from the adequacy concept (provisions necessary for safety) and other concepts.

What is an electrical branch circuit?

Definition of Branch Circuit and Feeder Circuit Branch Circuit: Any circuit that extends beyond the final overcurrent protective device is called a branch circuit. This includes circuits servicing single motors (individual) and circuits serving many lights and receptacles (multiwire).

What is the definition of a branch circuit?

The definition of a branch circuit is, “the circuit conductors between the final overcurrent device protecting the circuits and the outlet(s).” “Outlet” is defined as “[a] point on the wiring system at which current is taken to supply utilization equipment.” The Occupational Safety and Health Review Commission has held …

What article covers replacing non grounding receptacles and what do you need to do?

Article 406 covers the rating, type, and installation of receptacles, cord connectors, and attachment plugs (cord caps). One important requirement of Article 406 is that you must ground (bond) the grounding terminal of a receptacle to a low-impedance fault current path [250.146, 250.148, and 406.3(C)].

What article states that the grounded conductor in the lighting circuit has to be installed at the lighting control circuit?

Receptacle and lighting outlet requirements are covered in Article 210. All occupancies are covered, but many of these provisions pertain to dwelling units.

What NEC article covers the rules necessary for the installation of appliances?

Are you familiar with the various rules that apply to appliance installations? Article 422 covers electric appliances used in any occupancy if they are fastened in place, permanently connected, or cord‑ and plug-connected. The meat of this Code Article is in Parts II (Installation) and III (Disconnecting Means).

What is a GFCI branch circuit?

A GFCI is a ground fault circuit interrupter, an inexpensive electrical device that, if installed in household branch circuits, could prevent more than two-thirds of the approximately 300 electrocutions still occurring each year in and around the home.

What is a residential branch circuit?

A branch circuit runs from each switch to the receptacles, light fixtures, and appliances in the building. The purpose of a branch circuit is to supply power to the electrical devices in the home. Each one consists of a loop of wire that runs from the circuit breaker panel to the lights and receptacles and back again.

What is a branch circuit conductor?

A branch circuit is the circuit conductor between the final overcurrent device protecting the circuit and the outlet(s). Branch circuits are divided into four categories: appliance, general purpose, individual and multiwire (see Figure 1).

What is a multi wire circuit?

A multi-wire branch circuit is two or more circuits that is served by a a set of hot wires connected to different phases (all with the same voltage between them) and a common neutral wire (all of the hots also have the same voltage with respect to the neutral).