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67 Cards in this Set

  • Front
  • Back

NEC Section 90.1A

States the primary purpose of the NEC which is the practical safeguarding of the persons and property from hazards arising from the use of electricity.

NEC Section 90.1C

States that the code is not intended as a design specification or an instruction manual for untrained persons but it does provide a sound basis for the study of electrical installation procedures.

NEC Section 90.5

Contains two rules: mandatory rules and permissive rules. Mandatory rules contain the words shall and shall not that must be adhered to. Permissive rules identify actions that are allowed by not required and typically cover options or alternative methods. Permissive rules contain two phrases shall be permitted and shall not be required.

NEC Article 90

The main body of the text begins with an introduction that gives an overview of the NEC.

Informative Annex A

Contains a list of product safety standards for electrical components.

Informative Annex B

Contains information for determining ampacities of conductors under engineering supervision.

Informative Annex C

Contains the conduit fill tables for multiple conductors of the same size and type within the accepted raceways.

Informative Annex D

Contains examples of calculations for branch circuits, feeders and services as well as other loads such as motor circuits.

Informative Annex E

Contains information on types of building construction

Informative Annex F

Is for informational purposes and cover critical operations power systems.

Informative Annex H

Contains the requirements for administration and enforcement of the NEC.

Informative Annex G

Is for informational purposes and covers supervisory control and data acquisition (SCADA) systems.

Informative Annex I

Contains the recommended tables from UL Standard 486A-B.

NEC Chapter 1 General


NEC Article 100

Contains a list of common definitions used in the NEC that specfic to to a single article. This article also contains definitions of two terms: labled and listed.

NEC Chapter 2

Discusses wiring design and protection, the information electrical technicians need most often. It also covers the use and identification of grounded conductors, branch circuits, feeders, calculations, services, overcurrent protection and grounding.

NEC Article 200

Contains important information on the use and identification of grounded conductors.

NEC Articles 210 and 215

Covers the provisions and requirements for branch circuits, their ratings and required outlets, and installation and overcurrent protection requirements or feeders.

NEC Article 220

Contains the requirements for calculating branch circuit, feeder and service loads, including the calculation methods for farm loads.

NEC 225 and 230

Cover outside branch circuit, feeder and service installation requirements.

NEC Article 240

Covers requirements for overcurrent protection and overcurrent protective devices, including the standard ratings for fuses and fixed-trip circuit breakers.

NEC Article 240 Part IX

Cover overcurrent protection for installations over 600 volts.

NEC Article 250

Covers the requirements for grounding and bonding electrical systems. It also lists the systems required, permitted and not permitted to be grounded and provides the requirements for grounding connection locations. It also covers accepted methods of grounding and bonding, including types and sizes fo grounding and bonding conductors and electrodes.

NEC Chapter 3

Lists the rules on wiring methods and materials.

NEC Article 300

Provides the general requirements for all wiring methods, including information such as minimum burial depths and permitted wiring methods for areas above suspended ceilings.

NEC Article 310

Contains a description of acceptable conductors for wiring methods contained in NEC Chapter 3.

NEC Articles 312 and 314

Gives rules for boxes, cabinets, conduit bodies and raceway fittings.

NEC Articles 320 through 340

Cover sheathed cables of two or more conductors, such as non metallic- sheathed and metal-clad cable.

NEC Articles 342 through 356

Cover conduit wiring systems such as rigid and flexible metal and nonmetallic conduit.

NEC Articles 358 through 362

Covers tubing wiring methods, such as electrical metallic and nonmetallic tubing.

Articles 366 through 390

Covers other wiring methods, such as busways and wireways.

NEC Article 392

Explains that cable trays are a system of support for wiring methods.

NEC Article 400

Covers the use and installation of flexible cords and cables including the trade name, type letter, wire size, number of conductors, conductor insulation, outer covering and use of each.

NEC Article 402

Covers fixture wires again giving the trade name, type letter and other important details.

NEC Article 404

Covers the requirements for the uses and installation of switches, switching devices and circuit breakers where used as switches.

NEC Article 406

Covers the requirements for the uses and installation of receptacles, cord connectors and attachment plugs (cord caps)

NEC Article 408

Covers the requirements for switchboards, panelboards and distribution boards used to control light and power circuits. It also covers battery charging panels supplied from light or power circuits.

NEC Article 410

Gives installation procedures for fixtures in specific locaitons.

NEC Article 422

Covers the use of electric appliances in any occupancy which includes kitchen appliances, various heating appliances, cord and plug connected equipment and other approved equipment.

NEC Article 424

Covers fixed electric space heating equipment. It heating cable , unit heaters, boilers, central systems and other approved equipment.

NEC Article 430

Covers electric motors including electrical connections, motor controls and overload protection.

NEC Articles 440 through 460

Cover air conditioning and refrigerating equipment, generators, transformers , phase coverters and capacitors.

NEC Article 480

Provides requirements related to battery-operated electrical systems.

NEC Chapter 5

Covers special occupancy areas that sparks generated by electrical equipment may cause an explosion or fire caused by the atmosphere of the area or the presence of volatile material in the area.

NEC Article 500

Covers the different types of special occupancy atmospheres where an explosion is possible.

NEC Articles 501.10 502.10 and 503.10

Cover the installation of explosion proof wiring that is designed to prevent the ignition of a surrounding explosive atmosphere when arcing occurs within the electrical system.

NEC Articles 511 and 514

Regulates garages and fuel dispensing locations where volatile or flammable liquids are used.

NEC Article 520

Regulates theaters and similar occupancies where fire and panic can cause hazards to life and property.

NEC Article 600

Covers electric signs and outline lighting.

NEC Article 610

Applies to cranes and hoists.

NEC Article 620

Covers the majority of the electrical work involved in the installation and operation of elevators, dumbwaiters, escalators and moving walks

NEC Article 630

Regulates electric welding equipment.

NEC Article 640

Covers wiring for sound recording and similar equipment that require low voltage wiring.

NEC Article 660

Covers x-ray equipment.

NEC Article 665

Covers induction and dielectric heat-gnerating equipment.

NEC Article 670

Covers industrial machinery.

NEC Chapter 7

Covers the installation of emergency and legally required standby systems that should be arranged so that they can automatically transfer to an alternate source of current, usually storage batteries or gasoline driven generators. It also covers fire alarms and a variety of other equipment, systems and conditions that are not easily categorized elsewhere in the NEC.

NEC Chapter 8

Is a special category for wiring associated with electronic communication systems including tv telephone, radio, satellite dish, network powered broadband systems and community antenna systems.

NEC Chapter 9

Contains tables that are applicable when referenced by other chapters in the NEC.

Articles

Are the main topics of the NEC.

Chapters

9 of them form the broad structure of the NEC.

Exceptions

They follow the applicable sections of the NEC and allow alternative methods to be used under specific conditions.

Informational Note

Explanatory material that follows specific NEC sections

National Electrical Manufactures Association (NEMA)

The association that maintains and improves the quality and reliability of electrical products.

National Fire Protection Association (NFPA)

The publishers of the NEC and develops standards to minimize the possibility and effects of fire.

Nationally Recognized Testing Laboratories (NRTLs)

Product safety certification laboratories that are responsible for testing and certifying electrical equipment.

Parts

What certain articles in the NEC are subdivided into and have letter designations.

Sections

What parts and articles are subdivided into. They have numeric designations that follow the article number and are preceded by a period.