Patrick’S Nccer

The electrical components that are used to connect the commercial power to the premises wiring system.

The federal government agency established to ensure a safe and healthy environment in the workplace.

Job-related learning acquired while working.

Conduit, fittings, boxes, and enclosures that house the conductors in an electrical system.

The installation of the raceway system (including conduit, boxes, and enclosures), wiring, or cable.

After rough-in, the installation and termination of devices and fixtures.

Under strict safety guidelines, which of the following should be used to discharge capacitors before working on de-energized circuits?

What color tags are on the rubber gloves with the highest level of protection?

Which of the following voltages is considered low voltage?

Insulating gloves must be inspected by the user ___.

Class 1 rubber gloves have a maximum AC use voltage of ___.

The normal beating of a heart can be upset by an electrical current as small as ___.

Which factor determines the outcome of an electrical shock?

A live-dead-live test is conducted in order to ___.

OSHA requires you to be evaluated by a physician to ensure that you are physically fit to use which of the following types of protective equipment?

Which of the following battery byproducts can be explosive air?

NEC Section 590.6(A) states that the receptacle outlets requiring GFCI protection include the 125V, single-phase, 15A, 20A, and ___.

OSHA lockout/tagout rule protects workers from ___.

Which of the following should have side rails that extend 36 inches above the top support point?

At the end of the shift, a confined space entry permit must be___.

What must happen before any work may be performed in a confined space?

NFPA 70E® provides practical guidance in ___.

OSHA CFR 1910 is the standard for ___.

OSHA safety standards for the construction industry are contained in ___.

When a guardrail cannot be attached to a building, a solution may be to install a(n) ___.

For safety, assume that any facility constructed before 1980 contains ___.

A instrument for measuring electrical current.

A unit of electrical current. For example, one volt across one ohm of resistance causes a current flow of one ampere.

The smallest particle to which an element may be divided and still retain the properties of the element.

A DC voltage source consisting of two or more divided and still retain the properties of the element.

A complete path for current flow.

A material through which it is relatively easy to maintain an electrical current.

the common unit of quantity used for specifying the size of a given charge.

The movement, or flow, of electrons in a circuit. Current (1) is measured in amperes.

negatively charged particle that orbits the nucleus of an atom.

A material through which it is difficult to conduct an electric current.

A unit of measurement that represents one newton-meter (Nm), which is a unit of measure for doing work.

A prefix used to indicate one thousand; for example, one kilowatt is equal to one thousand watts.

Any substance that has mass and occupies space.

A prefix used to indicate one million; for example, one megawatt is equal to one million watt.

Electrically neutral particles (neither positive nor negative) that have the same mass as a proton and are found in the nucleus of an atom.

The basic unit of measurement for resistance.

An instrument for measuring electrical resistance.

A statement of the relationships among current, voltage, and resistance in an electrical current: current (I) equals voltage (E) divided by resistance (R). Generally expressed as a mathematical formula: I=E/R.

The rate of doing work or the rate at which energy is used or dissipated. Electrical power is the rate of doing electrical work. Electrical power is measured in watts.

The smallest positively charges particles of an atom. Protons are contained in the nucleus of an atom.

An electromechanical device consisting of a coil and one ot more sets of contacts. Used as a switching device.

An electrical property that opposes the flow of current through a circuit. Resistance (R) is measured in ohms.

Any device in a circuit that resists the flow of electrons.

A type of drawing in which symbols are used to represent the components in a system.

A circuit with only one path for current flow.

An electromagnetic coil used to control a mechanical device such as a valve.

A device consisting of one or more coils of wire wrapped around a common core. It is commonly used to step voltage up or down.

The outermost ring of electrons that orbit about the nucleus of an atom.

The unit of measurement for voltage (electromotive force or difference of potential). One volt is equivalent to the force required to produce a current of one ampere through a resistance of one ohm.

The driving force that makes current flow in a circuit. Voltage(E) is also referred to as electromotive force or difference of potential.

The change in voltage across a component that is caused by the current flowing through it and the amount of resistance opposing it.

An instrument for measuring voltage. The resistance of the voltmeter is fixed. When the voltmeter is connected to a circuit, the current passing through the meter will be directly proportional to the voltage at the connection point.

The basic unit of measurement for electrical power.

The statement that the total amount of current flowing through a parallel circuit is equal to the sum of the amounts of current flowing through each current path.

The statement that the sum of all the voltage drops in a circuit is equal to the source voltage of the circuit.

Circuits containing two or more parallel paths through which current can flow.

Circuits with only one path for current flow.

Circuits that contain both series and parallel current path.

The articles are the main topics of the NEC, beginning with NEC Article 90, Introduction, and ending with NEC Article 840, Premises-Powered Broadband Communications Systems.

NEC- national electrical code

Nine chapters form the broad structure of the NEC.

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

Explanatory material that follows specific NEC sections.

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

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

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

Certain articles in the NEC are subdivided into parts. Parts have letter designations (e.g., Parts A)

Parts and articles are subdivided into sections, Sections have numeric designations that follow the article number and are preceded by a period (e.g.,501.4)

Device used to physically connect conduit or cable to an outlet box, cabinet, or other enclosure.

Designed and constructed to withstand an internal explosion without creating an external explosion or fire.

Single gang outlet box used for surface mounting to enclose receptacles or wall switches on concrete or concrete block construction of industrial and commercial buildings, nongangable; also made for recessed mounting; also known as a utility box.

An enclosure where one or more raceways or cables enter, and in which electrical conductors can be, or are, spliced.

A metallic or nonmetallic box installed in an electrical wiring system from which current is taken to supply some apparatus or device.

A sheet metal box-like enclosure used in conduit rune to facilitate the pulling of cables from point to pint in long runs, or to provide for the installation of conduit support bushings needed to support the weight of long riser cables, or to provide for turns in multiple conduit runs.

Constructed or protected so that exposure to a beating rain will not result int he entrance of water under specified test conditions.

Constructed so that moisture will not interfere with successful operation.

Construction so that water will not enter the enclosure under specified test conditions.

Constructed or protected so exposure to the weather will not interfere with successful operation.

A bend that changes the direction of the conduit by 90 degrees.

Any bend formed by two 90degree bends with a straight section of conduit between the bends.

90 degree bends made in two or more parallel runs of conduit with the radius of each bend increasing from the inside of the run toward the outside.

The actual length of the conduit that will be bent.

Because a conduit bends in a radius and not at right angles, the length of conduit needed for a bend will not equal the total determined length. Gain is the distance saved by the arc of a 90 degree bend.

An offset (kick) is two bends placed in a piece of conduit to change elevation to go over or under obstructions or for proper entry into boxes, cabinets, etc.

The length of the bend i section of conduit measured from the bottom, centerline, or top of the straight section to the end of the bent section.

A larger bend formed by multiple short bends or shots.

Another name for the rise in a section of conduit. Also, a term used for conduit penetrating a slab or the ground.

Able to be reached, as for service or repair.

Meeting the requirements of an appropriate regulatory agency.

A wire used to make a continuous grounding path between equipment and ground.

Rigid structures used to support electrical conductors.

A round raceway, similar to pipe, that houses conductors.

Not permanently closed in by the structure or finish of a building; able to be installed or removed without damage to the structure.

A bend in a piece of conduit, usually less than 45 degrees, made to change the direction of the conduit.

Enclosed channels designed expressly for holding wires, cables, or busbars, with additional functions as permitted in the NEC

Connection of two or more conductors.

Intermediate point on a main circuit where another wire is connected to supply electrical current to another circuit.

A long, narrow box used to house electrical connections that could be exposed to the environment.

An agency that evaluated and approves electrical components and equipment.

Steel troughs designed to carry electrical wire and cable.

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

The turning drum of the cable puller on which the rope is wrapped and pulled.

A hand device used to pull a wire through a conduit run.

A cylinder of foam rubber that fits inside the conduit and is then propelled by compressed air or vacuumed through the conduit run, pulling a line or tape.

A device used to link pulling rope to cable during a pull.

Working drawing consisting of plans, elevations, details, and other information necessary for the construction of a building.

A single-line diagram used to show electrical equipment and related connections.

An exact copy or reproduction of the original drawing.

An enlarged, detailed view taken from an area of a drawing and shown in a separate view.

Sizes or measurements printed on a drawing.

A means of conveying a large amount of exact, detailed information in an abbreviated language. Consists of lines,symbols, dimensions, and notations to accurately convey an engineer's designs to electricians who install the electrical system on a job.

An architectural drawing showing height, but not depth; usually the front, rear, and sides of a building or object.

A drawing of a building as if a horizontal cut were made through a building at about window level, and the top portion removed. The floor plan is what would appear if the remaining structure were viewed from above.

A drawing that shows, by means of lines and symbols, the path of an electrical circuit or system of circuits along with the various circuit components.

A drawing made as though the viewer were looking straight down (form above) on an object.

A single-line block diagram used to indicate the electric service equipment, service conductors and feeders, and sub panels. Notes are used on power-riser diagrams to identify the equipment; indicate the size of conduit; show the number, size, and type of conductors; and list related materials.

On a drawing, the size relationship between an object's actual size and the size it is drawn. Scale also refers to the measuring tool used to determine this relationship.

A systematic methods of presenting equipment lists on a drawing in tabular form.

A detailed diagram showing complicated circuits, such as control circuits

A drawing that is usually developed by manufactures, fabricators, or contractors to show specific dimensions and other pertinent information concerning a particular piece of equipment and its installation methods.

A cutaway drawing that shows the inside of an object.

A drawing showing the location of a building or buildings on the building site. Such drawings frequently show topographical lines, electrical and communication lines, water and sewer lines, sidewalks, driveways, and similar information.

A written description of what is required by the owner, architect, and engineer in the way of materials and workmanship. Together with working drawings, the specifications from the basic of the contact requirements for construction.

Equipment designed for a particular purpose (for example, using electricity to produce heat, light, or mechanical motion). Appliances are usually self-contained, are generally available for applications other than industrial use, and are normally produced in standard sizes or types.

A special conduit bushing equipped with a conductor terminal to take a bonding jumper. It also has a screw or other sharp device to bite into the enclosure wall to bond the conduit to the enclosure without a jumper when there are no concentric knockouts left in the wall of the enclosure.

A bare or green insulated conductor used to ensure the required electrical conductivity between metal parts required to be electrically connected. Bonding jumpers are frequently used from a bonding bushing to the service-eqiuipment enclosure to provide a path around concentric knockouts in an enclosure wall, and they may also be used to bond one raceway to another.

The portion of the wiring system extending beyond the final overcurrent device protecting a circuit.

A circuit, such as conductors in conduit or a cable run, that carries current from the service equipment to a subpanel or a branch circuit panel or to some point in the wiring system.

A type of panelboard that is normally located at the service entrance of a residential installation. It usually contains the main disconnect.

A factory assembly of one or more insulated circuit conductors with or without optical fiber members enclosed in an armor of interlocking metal tape, or a smooth or corrugated metallic sheath.

A factory assembly of two or more instulated conductors enclosed within an overall nonmetallic jackets. Type NM contains insulated conductors enclosed within an overall nonmetallic jackets; Type NMC contains insulated conductors enclosed within an overall, corrosion-resistant, nonmetallic jackets; and Type NMS contains insulated power or control conductors with signaling, data, and communications conductors within an overall nonmetallic jackets.

General cable's trade mane for Type NM cable; however, it is often used generically to refer to any nonmetallic-sheathed cable.

The first stage of an electrical installation, when the raceway, cable, wires, boxes, and other equipment are installed. This is the electrical work that must be done before any finishing work can be done.

The overhead conductors, through which electrical service is supplied, between the last power company pole and the point of their connection to the service facilities located at the building.

The point where power is supplied to a building (including the equipment used for this purpose). The service entrance includes the service main switch or panelboard, metering devices, overcurrent protective devices, and conductors/ raceways for connecting to the power company's conductors.

The conductors between the point of termination of the overhead service drop or underground service lateral and the main disconnecting device in the building.

Equipment that provides overcurrent protection to the feeder and service conductors, a means of disconnecting the feeders from energized service conductors, and a means of measuring the energy used.

The underground conductors through which service is supplied between the power company's distribution facilities and the first point of their connection to the building or area service facilities located at the building.

A mechanical device used for turning an electrical circuit on and off.

A circuit routed to a switch box for controlling electrical lights.

A number of turns of wire, especially in spiral form, used for electromagnetic effects or for providing electrical resistance.

An electrical term used to describe a complete (unbroken) circuit that is capable of conducting current.Such as a circuit is also said to be closed.

A meter movement that uses a permanent magnet and moving coil arrangement to move a pointer across a scale.

The number of cycles completed each second by a given Ac voltage; usually expressed in hertz equals one cycle per second.

Customer control unit

Residual current device