Get Wired 101 Midterm Practice Test

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• A total load of 25,620 W is distributed over five circuits. If the load is instead distributed evenly over six circuits, what is the new average per circuit?
• Which metric prefix represents one thousandth?
• Which health concept is associated with an abnormal heart rhythm characterized by quivering?
• Exterior raceways shall be designed to be suitable for use in wet conditions and to drain. Which of the following statements is true?
• To allow for adequate conductor length at electrical outlets and device boxes, the code requires not less than how many inches of conductor length be provided?
• A motor brush is 1 7/8 inches long. How long is it after 49/64 inch wears away?
• What is considered the most important rule of electrical safety?
• The front edge of a box installed in a combustible wall must be flush with the finished surface. What is the proper term for this alignment?
• Underwriters Laboratories and other recognized testing laboratories 'approve' products.
• What is the maximum weight of a luminaire permitted to be hung directly from an outlet box in a ceiling, unless the box is otherwise marked?
• In a house where 35 outlets are installed, 735 feet of cable are used. What is the average number of feet of cable used per outlet?
• Which set correctly lists the three principal subatomic particles and their charges?
• What do the letters UL signify?
• Which combination of actions best reduces the risk of electric shock when working on a circuit?
• Which conductor size has a cubic volume of 3 cubic inches according to NEC table 314.16B?
• The purpose of electrical symbols on plans is____.
• What does the term approved mean in regulatory terms?
• Which measurement unit is associated with the listed conductor length requirement: 6 inches corresponds to how many millimeters?
• Raceways on exterior surfaces of buildings shall be _____ and arranged to drain.
• If a ladder has spreaders that are not fully locked, what does the material say about safety?
• Protons and neutrons are formed from a combination of smaller particles. What are these particles called?
• Which subatomic particle carries a positive charge and is located in the nucleus?
• Which statement best describes NEC compliance as presented in the material?
• Which subatomic particle carries a negative charge and orbits the nucleus?
• Listing or labeling of electrical equipment is performed by which type of organization?
• The mounting holes in a metal box for attaching equipment grounding conductors are tapped for which screws?
• Who is responsible for enforcing OSHA regulations?
• Which of the following is not a standard size fuse or time inverse circuit breaker according to the NEC?
• A receptacle outlet is:
• When the word 'shall' appears in a NEC reference, it means that it ___ be done.
• It is a safe practice to use a stepladder in which the spreaders have not been fully locked into position.
• Find the total amount of power in watts for a 5 hp, 7 hp and 10 hp group of motors. (One horsepower equals 746 watts)
• A total load of 25,620 watts is distributed equally over 5 branch circuits. What is the average load per circuit?
• For equipment grounding conductors, the volume allowance is based on which conductor?
• How may luminaries be mounted to an outlet fastened to an offset bar hanger?
• Which unit does NEC table 314.16B use to express conductor volume?
• An electrician uses switch outlet boxes on eight different jobs. The numbers used were 56, 9, 86, 36, 93, 105, 42, 56. What is the total number of outlet boxes used?
• What is the definition of a bonding jumper?
• Compliance with the NEC always results in an electrical installation that is adequate, safe, and efficient.
• Why should a person work with only one hand when possible?
• A padlock is used to lock out a piece of equipment. Who should have the key?
• What NEC article has the majority of definitions?
• Which of the following is true about the 1/4 inch setback rule for outlet boxes?
• UL stands for what?
• What is the average number of outlet boxes used per job across the eight jobs with counts 56, 9, 86, 36, 93, 105, 42, 56?
• Which statement correctly reflects the NEC definition of a qualified person?
• The generic term for a group of nonflammable synthetic chlorinated hydrocarbons used as electrical insulating media is known as:
• What is the proper symbol for a four-way switch?
• In box-fill calculations, what is the additional volume allowance for one or more fixture studs?
• Askarel is the generic term for a group of nonflammable synthetic chlorinated hydrocarbons used as electrical insulating media. Which term best fits this description?
• Floor receptacle outlets satisfying the rule shall be located not more than ____ inches from the wall.
• Which of the following best describes the role of a Nationally Recognized Testing Laboratory (NRTL) with regard to electrical equipment?
• What is the maximum number of 12 AWG conductors permitted in a 4 11/16 in. x 1 1/2 in. square box?
• The NEC makes suggestions about how to wire a house that will be occupied by handicapped persons.
• How is electricity defined?
• If the coil now has 41,710 turns and each turn is 1.75 inches long, how many feet of wire are required, rounding up?
• What does the law of charges state?
• Which height is commonly used for the center of garage receptacles?
• Which subatomic particle is neutral and located in the nucleus along with protons?
• Arc flash temperatures can reach 35,000°F, which is hotter than the surface of the Sun. True or False?
• NEC 314.22 Exception requires that a surface extension from an outlet box cover be made using____.
• All of the following items of electrical equipment are devices, except for____.
• The front edge of a box installed in a combustible wall must be flush with the finished surface. Which term describes this alignment?
• If two objects have opposite charges, they will be drawn toward each other.
• A storable swimming pool is capable of holding water to a maximum depth of ____ inches.
• Double volume allowance is required for which scenario?
• If two objects have the same type of charge, they will do what?
• In box-fill calculations, beyond counting conductors, what is the additional volume required for one or more internal cable clamps?
• What is the total horsepower of a group of motors that collectively use 16,412 watts?
• Which statement best describes a lighting outlet?
• The mounting holes in a device (switch) box are tapped for which screws?
• A ladder is used to reach the top of a building 16 ft tall. What distance should the bottom of the ladder be placed from the side of the building?
• Approximately how many times heavier is a proton than an electron?
• The valence shell of an atom is the ____ shell.
• In conductor materials, the general number of valence electrons is:
• What is the range of the box counts (max minus min) among the eight jobs?
• What section of the NEC covers grounding?
• You can increase the total volume of a box by adding a mud ring that is____.
• Which particle is approximately 1838 times heavier than an electron?
• One horsepower equals 746 watts. How many watts are in 7 horsepower?
• For what aspect is the NEC a minimum standard?
• What does a dashed line between a switch and an outlet signify?
• In the context of the material, what is UL most accurately described as?
• What section of the NEC states that all listed or labeled equipment shall be installed or used in accordance with any instructions included in the listing or labeling?
• Name three devices used to provide ground-fault protection.
• What is the operating principle of a defibrillator?
• What does MSDS stand for?
• The standard for Electrical Safety in the Workplace published by the National Fire Protection Association is known as which document?
• What authority enforces the requirements set by the NEC?
• What is the open-circuit voltage between the two terminals of a single-pole switch on a lighting circuit when the switch is off?
• What is fibrillation of the heart?
• In box-fill calculations, what is the additional volume allowance for one or more wiring devices on one yoke?
• What is the NEC definition of a qualified person?
• The open-circuit voltage observed at a switch in the off position is typically equal to which value in a standard residential lighting circuit?
• Which statement best describes a ground fault?
• Approximately how many times larger is the mass of a proton than that of an electron?
• What is the charge of an electron?
• What term describes current that flows in only one direction?
• What is an outlet?
• What is the approximate current at which a ground-fault detector will open a circuit?
• Which rooms in a dwelling unit must always have a switch controlled lighting outlet?
• A ____ is an outlet intended for the direct connection of a lamp holder.
• Branch-circuit conductors at outlet boxes are required to have at least____inches of free length for making splices and connections.
• What is the maximum number of 12 AWG conductors permitted in a 4 in. x 1 1/2 in. octagon box?
• What federal organization dictates requirements for work-related safety issues?
• Lock out/tag out (LO/TO) is required by which organization?
• The NEC article number associated with grounding is?
• Which statement best describes accessible equipment?
• What is the primary objective of the NEC in electrical installations?
• What is the median number of outlet boxes used per job from the eight job counts: 9, 36, 42, 56, 56, 86, 93, 105?
• Valence electrons are contained in the ____ shell.
• What is the mission of OSHA?
• NEC 314.22 Exception allows a surface extension from an outlet box cover to be made using which material?
• What is the cubic volume in inches for a 14 AWG conductor?
• What NFPA standard specifically covers safety in the workplace?
• A nine-floor apartment building has an average of four electrical circuits for each apartment. There are six apartments on each floor and one additional apartment on the roof. How many electrical circuits are in total?
• Article ____ contains much detail about outlet boxes, device (switch) boxes, pull boxes, junction boxes, and conduit bodies.
• At no point along the floor line, in any wall space, can you be more than ____ from a receptacle outlet.
• Certain types of boxes may be grouped together or____.
• For extension ladders, an electrician must not stand higher than which rung from the top?
• If a coil has 194 layers and 215 turns per layer, how many total turns does it have?
• The smallest part of an element is a?
• What do the letters "PPE" stand for?
• It is necessary to count luminaire (fixture) wires when counting the permitted number of conductors in a box according to 314.16.
• The most common method of producing electricity is through the use of:
• The part of an atom that has a positive charge is the?
• What method is recognized as the easiest and most reliable way to look up NED code articles?
• What does a Nationally Recognized Testing Laboratory (NRTL) do with electrical products to provide a basis for field approval?
• Which table in the Code shows the maximum number of conductors permitted in a given size box?
• The nucleus of an atom contains?
• An inventory sheet shows 565 outlet boxes on January 1. On January 10, 145 boxes are taken out of stock. On January 14, 35 boxes are returned to stock. How many outlet boxes are in stock after January 14?
• What is the purpose of the NEC?
• Which article number in the NEC provides detailed information about box types and conduit bodies?
• When using the subject indexing technique, what should you do if the first subject you choose to look up is not in the index?
• The atomic number of an element is the number of ____ in the nucleus.
• The following amounts of nonmetallic sheathed cable are used on an apartment house job: 625 ft, 785 ft, 75 ft, 140 ft, 310 ft, 325 ft, 120 ft. What is the total feet of nonmetallic sheathed cable used on the job?
• Which organization publishes the National Electrical Code (NEC)?
• Does the NEC provide minimum or maximum standards?
• Which statement about listed or labeled equipment is true according to the material?
• The plans show curved lines running between switches and various outlets. What do these dashed lines indicate?
• For a 16-foot ladder, what fraction of its height should the base be away from the wall?
• According to Article 100, a dwelling unit has which features?
• For box openings having any dimension less than 8 in (200 mm), the minimum length of conductor measured from the box opening in the wall to the end of the conductor is ________.
• Objects charged with different types of charges will be drawn toward each other.
• Table 314.16(A) allows a maximum of ten wires in a certain box. If the box has two cable clamps and one fixture stud, how many conductors are allowed?
• The 4 11/16 in. x 1 1/2 in. square box corresponds to which type of box?
• NFPA stands for what?
• What is a ground fault?
• The NEC first presents measurements in which system of units?
• Which set lists the devices used to provide ground-fault protection?
• The maximum general purpose branch circuit rating of a flat conductor cable is ____ amperes.
• A purchase of 2,500 feet of THHN #14 wire is made for a job. On November 1, 1,365 feet of this wire are used. On November 3, an additional 830 feet are used. How many feet of wire are left after November 3?
• What type of fire is class B?
• Objects charged with the same type of charge will do what?
• There shall be a minimum of one ____ ampere branch circuit for the laundry receptacle outlet in a dwelling unit.
• In lockout/tagout procedures, who should hold the key to prevent re-energization?
• When installing wall boxes on both sides of a common partition between a garage and a habitable room, what must be considered?
• In the international system of units, what does the prefix kilo- mean?
• What is the proper symbol for a three-way switch?
• Find the shortest length of 1/2 inch conduit from which the following pieces can be cut: 7 7/8 inches, 3 1/4 inches, 6 1/2 inches, 12 1/8 inches and 24 3/16 inches. Allow 1/16 inch for each saw cut.
• A very small magnet is wound with 97 layers holding 215 turns per layer. How many total turns of wire are on the coil?
• Which statement about the NEC index location is true?
• Which of the following is NOT a nationally recognized testing laboratory?
• For box openings with any dimension less than 8 inches, what is the minimum length of conductor measured from the box opening to the end?
• Which statement correctly describes direct current in terms of direction?
• Which particle has no electric charge?
• The NEC code update cycle states that a new code is published every how many years?
• What term describes current that flows in only one direction and is also called direct current?
• A conductor is normally made of atoms with ____ electrons in the valence shell.
• Direct current is also referred to as what?
• What range of electric current generally causes death?
• Plans show curved lines between switches and various outlets. What do these lines indicate?
• If 50 outlets are installed and 1,020 feet of cable are used, what is the average feet of cable per outlet?
• Approximately how many years ago were the effects of static electricity noticed?
• The wall plate for a three-gang switch assembly (three switches) is called which plate?
• A piece of carbon 31/32 inch thick has a copper plating of 1/64 inch on each side. What is the total thickness?
• What is the proper symbol for a single-pole switch?
• What is the definition of accessible (as applied to equipment)?
• What can you do to reduce or eliminate the possibility of receiving an electric shock when working on electrical circuits?
• A building has eight floors with six apartments on each floor and two roof apartments. If each apartment has four electrical circuits, how many total circuits are there?
• Which statement is true about box-fill volume allowances?
• The length of threading on an EMT box connector is approximately 7/16 inch. The locknut is 1/8 inch thick and the metal of the box is 1/32 inch thick. Once installed, how much thread is left for a threaded bushing?
• The bonding jumper provides a reliable conductor to ensure what?
• How many chapters are there in the NEC?
• The mounting holes in an outlet box are tapped for which screws?
• In the international system of units, what does the prefix milli- signify?
• Which NEC provisions govern the closure of unused knockouts in electrical boxes and cabinets?
• Which statement best describes the purpose of NRTL labeling?
• When noncombustible surface material is used on walls or ceilings, outlet boxes must be mounted so that they will be set back not more than ____ from the face of the surface material.
• Which statement about low-voltage systems is supported by the material?
• In insulator materials, valence electrons are generally:
• Electricity is the flow of:
• The law of charges states that like charges____ and opposite charges____.
• In box-fill calculations, what is the additional volume allowance for one or more equipment grounding conductors?
• Low-voltage systems are totally safe.
• Which particle is a fundamental constituent that combines to form protons and neutrons?
• Unused knockouts in electrical boxes and cabinets must be closed according to which NEC provisions?
• What is the total horsepower of five motors rated 1/16 hp, 1/4 hp, 1/3 hp, 3/4 hp, and 1/8 hp?
• How high above the garage floor are receptacles located (center height)?
• Class B fires involve which fuels?
• If the coil has 20,855 turns and each turn is 1.75 inches long, how many feet of #24 AWG wire are required to wind the coil?
• An arc flash can generate temperatures of __________, which is hotter than the surface on the sun.
• Which device delivers a controlled electrical shock to reset heart rhythm?
• The NEC is revised, and a new Code is published every how many years?
• Where is the index located in your code book?
• What do the letters 'UL' signify?
• What is an MSDS?
• A theoretical particle that bonds quarks together as well as protons and neutrons is called a _______.
• Devices are equipment that carry current, but do not____.