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218 Matching questions

  1. NEC Tables 310-10 through 310-21 provide information on.
  2. Using NEC Section 250-8, identify five methods of making connections.
  3. ______ are the subject of NEC Section 680-20.
  4. What determines the severity of an electrical shock?
  5. Property owners can act as their own AHJs. (True or False)
  6. Explain the process of cad welding?
  7. The organization that sponsors the NEC, is the _____.
  8. A switch should be _____ high off the floor?
  9. ampacity
  10. NEC allows electricians to ground gas pipes to existing, grounded water pipes. (True or False)
  11. Explain the proper way to ground a subpanel in the same building.
  12. Which NEC tables(s) cover(s) the fill of metal boxes?
  13. The process of equipment _____ exposes current-carrying parts to a grounding system.
  14. NEC requires a panelboard circuit directory. (True or False)
  15. Per NEC 450.3, when a transformer is enclosed, install _____ fuses at the transformer's primary.
  16. NEC allows how many disconnects per service entrance?
  17. What factor determines circuit size?
  18. Name the methods of sizing bonding jumpers outlined in NEC Section 250-28D.
  19. Something that is ______ is connected to ground or to a conductive body that extends the grounding connection.
  20. The NEC defines ampacity as,
  21. Insulators like air, paper or rubber prevent arcing. (True or False)
  22. What is the approach for determining the number of receptacles on a 20-amp circuit?
  23. Voltage strengthens as a negative terminal becomes crowded with electrons. (True or False)
  24. If you have 1,800 watts for baseboard heat, at 240V how many amps are there?
  25. What is meant by the term isolated grounded reciprocal?
  26. NEC Article 100 is dedicated to?
  27. How does an NEC violation affect the occupancy of an existing installation?
  28. Which of the following is not a conductor? Gold, Silver, Copper Water, Air.
  29. NEC Table 220.42 can be used to calculate lighting loads in a restaurant dining area. (True or False)
  30. As the diameter of wire increases, resistance to flow increases. (True or False)
  31. The main ground on a service is a(n) _____.
  32. An electrician can safely recess a panel board into a flammable wall. (True or False)
  33. NEC Chapter _____ specifies conduit fill requirements for fiber-optic cabling.
  34. Using aluminum wire with receptacles must be _____.
  35. What NEC table would you go to to find trade size of conduit and raceway size?
  36. On a 200-amp service, the electrician should use _____ or _____ size grounded conductor in the service cable.
  37. Explain where and why isolated systems are used.
  38. NEC defines "Bonding" as,
  39. Name some tools for installing ground rods.
  40. The requirements for burying 240V conductors are found in NEC _____.
  41. Identify four parties who should be satisfied with the electrical work in a new residence.
  42. What is the maximum number of sets of service conductors a service drop or lateral may supply?
  43. Small power tools are protected in what two ways?
  44. Voltage can be fatal to a person. (True or False)
  45. According to NEC, trees are approved service conductors. (True or False)
  46. A tree over 50 ft. high may be used as an overhead service support for a single-story residence only. (True or False)
  47. Where does NEC list the types of insulation material deemed acceptable in wet locations?
  48. Electricians may use rebar as a grounding means. (True or False)
  49. All new wiring receptacles must be grounded to a neutral bar in the panel box. (True or False)
  50. A circuit that cannont cause a fire in a hazardous condition is called a(n) _____ system.
  51. The calculations for protecting motor circuits are the same as those for non motor circuits. (True or False)
  52. Which of the following lacks insulation properties? Rubber, Air, Water, Mica, Paper
  53. Define the term grounding conductor.
  54. A 12-foot hallway requires one receptacle to meet code. (True or False)
  55. Differentiate between AC and DC.
  56. Branch circuits must be loaded equally in terms of wattage per unit area. (True or False)
  57. Define a parallel circuit?
  58. Along a wall space, a first outlet should be no more than _____ feet from a door.
  59. NEC Section 250-118 states that a grounded conduct must run _____ flexible conduit.
  60. What is an outlet?
  61. What is the proper procedure for bonding a motor conduit with metal flex?
  62. Bonding is the establishment of ______ connection between metal parts.
  63. Why do stoves require a four-wire system?
  64. All electrical equipment and supplies should be considered _____ until determined otherwise.
  65. If you have 750 watts total in bulbs, how many amps is it at 120V?
  66. An attic with a furnace requires a receptacle. (True or False)
  67. NEC Article _____ address EMT.
  68. Which NEC Section covers equipment grounding conductors.
  69. When installing an autotransformer, it is important to remember to insert an OCPD in series with the shunt winding. (True or False)
  70. What is the service drop distance, in feet, of a 200-amp service crossing residential property?
  71. Threaded pipe can be used for bonding purposes? (True or False)
  72. How many cubic inches does each wire take for:
    14 gauge ________.

    12 gauge ________.

    10 gauge ________.
  73. IN NEC 2008, what does Table 370.6A cover?
  74. General-purpose enclosures are NEC approved for intrinsically safe apparatuses. (True or False)
  75. According to good engineering practice, a sump pump requires a dedicated circuit.
  76. A 10 AWG wire carries how many amps? (What size breaker?)
  77. NEC Section 300-13 provides information on?
  78. Motors and generators work the same way. (True or False)
  79. NEC Chapter 9, Table 5, states,
  80. Underground service is simpler to troubleshoot and repair than overhead service? (True or False)
  81. A grounding conductor is what color?
  82. How many watts should be allocated per square foot in a residence?
  83. In front of a panel from floor to ceiling, how much clearance depth is needed?
  84. NEC Article ______ defines breakers and fuses.
  85. A ground ring encircling a building or structure, in direct with the earth consisting of at least _____ft. of bare copper not smaller than _____ AWG, shall be permitted as an electrode.
  86. NEC Article 526 helps electricians determine requirements for _____.
  87. A _____-amp breaker goes on a 12 AWG wire.
  88. What is the NEC definition of a circuit breaker?
  89. A transformer has a voltage ratio of 8:1 and an input of 120V. What is the output Voltage?
  90. The "3-ft. rule" for clearances around things like control panels is adequate. (True or False)
  91. Disconnects and switches used with appliances must indicate, on their switches, the on- and off-positions. (True or False)
  92. All voltages in a circuit are referenced to Earth ground via a black wire. (True or False)
  93. A(n) _____ circuit is designed and created for one load.
  94. NEC Article _____ outlines the restrictions for using plastic junction or device boxes.
  95. Discuss the proper way to ground a subpanel in another building.
  96. Name 3 situations AFCI protection is required.
  97. The smaller kitchen counter requiring a receptacle is _____ inches.
  98. In a multiphase system in which one phase is used as a single-phase source, which conductor serves as ground?
  99. Outdoor lighting installations exceeding _____ are subject to the clearance requirements outlined in NEC 225.7
  100. A garage door opener is considered an appliance for NEC purpose. (True or False)
  101. A finished basement should have GFCI protection.
  102. The maximum operating temperature of type FFH-2 fixture wiring is?
  103. A TVSS provides adequate protection against lighting strikes. (True or False)
  104. When a service entrance wire is under at least 2 in. of concrete, a disconnect is required between meter base and panel. (True or False)
  105. Describe a grounding conductor.
  106. What three areas of a residence require 20-amp circuits?
  107. When an ammeter is connected in parallel with a load, ______.
  108. All metallic boxes and components must be grounded unless a grounding conductor is absent. (True or False)
  109. A metal fence should be attached to a ground rod?
  110. NEMA stands for National Electrical Manufacturers Association
  111. The requirements for liquid-filled transformers are the same regardless of the liquid used in the transformer. (True or False)
  112. In NEC, Table _____ provides the sizing of grounding electrode conductors.
  113. In electric circuits, a load usually converts electrical energy to _____, _____, or _____.
  114. A receptacle or a switch with 14-2 entering it counts as _____ cubic inches.
  115. In electrical work, electrons are always balanced between two points. (True or False)
  116. Which NEC Article covers grounding?
  117. A subpanel requires a bonding screw? (True or False)
  118. In the standard U.S. system of wire sizes, from No.50 through No.4/0, the lower the number the _____ the wire.
  119. Which NEC Section covers ground terminal identification.
  120. FMT conductors are appropriate for battery storage areas. (True or False)
  121. Leads to an unused current transformer should be.
  122. Why do dryers require a four-wire system?
  123. When using 500 MCM, _____ or ______ size ground wire is appropriate on a 400-amp service.
  124. Annex _____ of NEC covers conduit fill.
  125. Electricians should put grounded conductors on yellow reciprocal screws? (True or False)
  126. What Section discusses "clearance(s) from ground.
  127. In terms of AWG, what is the minimum grounding conductor size permitted?
  128. Nameplates that rate protective devices describe which of the following?
  129. NEC Article 426 recognizes which three kinds of heating systems?
  130. Electricians must use a(n) _____ to properly connect number 4 copper to a ground rod.
  131. ampere
  132. A circuit using 2 amps of current with 12V applied dissipates how much current?
  133. Where a main bonding jumper or a system bonding jumper is a screw only, the screw shall be identified with a _____ finish that shall be visible with the screw installed.
  134. _____ determines what size ground wire used on a service.
  135. In what sections does NEC outline the requirements for appliance calculations?
  136. Which NEC chapter discusses fixture wiring and fixture wires.
  137. Installation of a floor drain in a vault intended for wet transformer(s) is ______.
  138. Current is measured in _____.
  139. Above sidewalks accessible by pedestrians, a service drop not over 600V must be at least _____ft. high.
  140. A circuit has a source of 10V and a resistance of 2hm. A fuse in this circuit should have what value?
  141. Give guidelines for using sheet metal screws as bonding agents.
  142. The standard length for IMC is?
  143. What are NEC requirements for a receptacle on a peninsula?
  144. A whirlpool tub requires GFCI protection. (True or False)
  145. What does NEC Section 250-28A require?
  146. Air-conditioning units, hot water heaters, and baseboard heat require a four-wire system? (True or False)
  147. Service drops must be installed so as to be "readily accessible." (True or False)
  148. Why is M/C cable required in a cupboard instead of Romex?
  149. NEC Section 250-134 provides information on what topic?
  150. Which NEC reference identifies wire sizing and the temperature a wire can handle in amps?
  151. The major cause of death from electrical shock is _____.
  152. According to NEC 230.9(A), an unsheathed service conductor must be _____ft. from a window that opens.
  153. In NEC terms, what does the phrase in sight mean?
  154. NEC Section _____ oversees bonding of flexible type conduit.
  155. Describe the information covered in NEC Article 230.9 (A)
  156. NEC Article _____ addresses bonding requirements in healthcare facilities.
  157. It is proper procedure to install an exhaust fan and light in a shower area. (True or False)
  158. Typically, transformers are available in one of two types: _____ and _____.
  159. NEC maintains no ampacity requirements for fixture wiring because all fixtures undergo the UL approval process. (True or False)
  160. NEC _____ outlines the requirements fo AC type (armored) cable.
  161. Name two hazards found in a Class III hazardous environments.
  162. What new code is needed for protection in all habitable spaces?
  163. The larger the diameter of a piece of wire, the _____ its AWG value.
  164. When is building steel permitted in an electro grounding system?
  165. What demand factor applies when calculating loading requirements for an apartment building with 21 units? A building with over 100 units?
  166. NEC Chapters 1-4 governs basic practices in effect in hazardous areas, except as modified by specific requirements outlined in NEC Chapter _____.
  167. The most important aspect of becoming an electrician is learning about _____.
  168. The way to ground a transformer in a commercial building is to place a grounding rod inside the building? (True or False)
  169. The required clearance for a 400-amp service drop across a major roadway is?
  170. A voltage of 1V applied across a 1ohm resistance produces a 1amp current. If the voltage is doubled and the resistance is halved, the current does what?
  171. Which NEC article covers service drops?
  172. NEC Section 250-102 is devoted to equipment _____.
  173. Define a grounding system according to NEC.
  174. A home has dimensions of 28 x 52 ft., which includes a 28 x 12 ft. garage. What is the home's total living area in square feet?
  175. Open conductors belonging to separate circuits must be separated by?
  176. Describe the process for bonding three 200-amp disconnects to make a proper grounding system.
  177. Extension cords are acceptable in wet areas. (True or False)
  178. On a 400-amp services, how many ground rods are required?
  179. Which of the following is considered a service ground?
    1. water pipe
    2. ground rod(s)
    3. ceramic well housing
    4. chain link fence post
  180. What is the topic of NEC Section 250-122?
  181. When establishing ground clearance in new construction. It is best to make the ground clearance slightly more than the NEC-stated requirement to provide a margin for error. (True or False)
  182. What is meant by the phrase shall be?
  183. Fusing the load side of a transformer sufficiently protects the transformer. (True or False)
  184. What is the difference between NFPA 70 and NEC?
  185. What kind of information does NEC Section 250-66 cover?
  186. Which NEC sections covers identification of equipment grounding conductors?
  187. When local ordinance superseded or administers NEC, NEC uses what phrase?
  188. Which NEC article covers cable trays?
  189. A bonding screw is what color?
  190. NEC Table _____ covers grounding electrode conductor sizing.
  191. A(n) _____ is the fundamental particle of electricity.
  192. Equipment grounding conductor _____ is (are) discussed in NEC Section 250-130.
  193. When running new work over old, hanging a second support from a primary support is acceptable practice. (True or False)
  194. _____ and ______ are two types of electrical faults.
  195. When installing a cable tray, only the sections nearest the terminations must be grounded. (True or False)
  196. When bonding a plumbing system to the electrical system, it is not necessary to jump the water meter as this connection is built into the meter. (True or False)
  197. What is the proper way to test conduit for proper grounding?
  198. NEC Articles _____ and _____ covers metallic and non-metallic raceways in buildings.
  199. NEC 90.1(A) states that the purpose of NEC is the "practical safeguarding of _____ from hazards arising from the use of electricity".
  200. The negative terminal of a battery has a surplus of protons.(True or False)
  201. A(n) _____ acts as a fuse, but is usually resettable.
  202. Which NEC articles cover the installation requirements for RMC, IMC, and EMT?
  203. In a three-phase delta system, the leg with the highest voltage must be _____.
  204. What is the subject of NEC Section 250-2D?
  205. What does it mean when a receptacle has "NEMA 5-20R" on it?
  206. Which of the following NEC sections outlines which air-conditioning systems requires no grounding?
  207. Which NEC guidelines guarantee the best workmanship and safest installations possible.
  208. The Panel Board requirements for Application in Construction appear in NEC Article?
  209. Name a common application for high impedance grounding.
  210. A receptacle should be how high off the floor?
  211. NEC Chapter 9, Table 4, states,
  212. Per NEC Article 410, luminaires may mount on drop-ceiling tiles. (True or False)
  213. In a given NEC section, Subsection (2) contains _____.
  214. It is possible to violate the NEC by tightening a bolt or fastener too tight. (True or False)
  215. Is a receptacle needed close to an air-conditioning unit? If so, how close must it be?
  216. How would demand be calculated in a commercial environment in which a branch circuit could effectively handle 20 KW?
  217. What is proper phase arrangement when wiring a three-phase panelboard?
  218. When NEC Article 100 describes "Feeder" as.
  1. a Electrical installations at permanently installed pools.
  2. b Three residential areas that require 20-amp circuits are the kitchen, bathroom, and laundry room.
  3. c False, a A/C unit needs only 220 and a ground to complete the circuit.
  4. d According to new codes, ARC fault protection is needed many additional parts of the house.
  5. e Per NEC 225.34, a maximum of six disconnects are allowed per service entrance.
  6. f When only the steel is connected to earth ground.
  7. g Is dedicated to the sizes of the grounding conductor
  8. h 16 in.
  9. i 30amps (10 x 3)
  10. j NEC 225.18
  11. k Two hots are needed to operate the heater neutral. The timers can serve as ground for tripping mechanism.
  12. l Per NEC 230.40, "Every service drop or lateral shall supply only one set of service entrance conductors."
  13. m True
  14. n Breaker Rating determines ampacity, or size, of a circuit.
  15. o False, Per NEC 230.24, Service drop connectors shall not be readily accessible.
  16. p Per NEC 225.14, separated by 4in.
  17. q To test conduit for proper grounding, check ohms or use 120V receptacle and touch to ground to check for voltage.
  18. r NEC requires a clearance width of 30in. and a clearance depth of 36in.
  19. s Per NEC 100, Property owners can act as their own "Authority Having Jurisdiction" (AHJ)
  20. t Connections
  21. u True, It is a good idea to exceed the requirements by a foot or two.
  22. v 1. Air-borne Particulate
    2. Sawdust
  23. w Circuit Breaker
  24. x NEC 310.8
  25. y Reliable
  26. z 48 in.
  27. aa False, the smaller the diameter increases resistance to flow.
  28. ab Per NEC 680.90(A), GFCI protection Must reside on whirlpool tubs.
  29. ac False, Fuses on the load side do not protect the transformer.
  30. ad False, Depending on the location and environment, 3ft. may be insufficient clearance. While grouping apparatuses tightly may save space, repair and maneuvering options are limited should a device fail.
  31. ae True, Electricians may use rebar as a grounding means.
  32. af 14 gauge; 2

    12 gauge; 2.25

    10 gauge; 3
  33. ag Green finish
  34. ah False, NEC does not approve tress as service conductors.
  35. ai It guards wire against damage.
  36. aj Chapter 9
  37. ak False, via a green wire
  38. al Mechanical and Electrical continuity conductors.
  39. am Each receptacle or switch counts as 2 conductors, and 14 AWG wire conductors require 2 each. Therefore, 2 conductors x 2 = 4 cu. in. Add to this 2 for the yoke and 2 for the ground for a total 0f 8
  40. an 120V
  41. ao OCPD
  42. ap False, A bonding screw is unneeded in a subpanel.
  43. aq True, all equipment must be installed per manufacturer's instructions and specifications, The apparatus is void and violates NEC if this is not done.
  44. ar False, No disconnect is required.
  45. as True, Per NEC 422.31
  46. at NEC 320
  47. au NEC Section 250.118(5)
  48. av Receptacles must be installed on a peninsula when the peninsula's long edge is at least 24in. and its short edge is at least 12in.
  49. aw NEC Articles 342, 344, and 358 outline the installation requirements of RMC, IMC, and EMT.
  50. ax NEC 300.5, provides requirements up to 600V
  51. ay 1. Bonding jumper is sized not less than 12.5% of the largest phase conductor.

    2. Based on the largest ungrounded service conductor.

    3. Based on the largest sum of the service conductors.
  52. az "the current, in amperes, that a conductor can carry continuously under the conditions of use without exceeding its temperature rating"
  53. ba Two outside ground wire are needed on a 400 amp.
  54. bb Per NEC 220.13, use 100% of the first 10KW and 50% of the demand above 10KW. In this case, the demand factor would be 10,000 plus half the remaining 10,000 or 15,000W
  55. bc NEC 90.1(C)
  56. bd True, motors convert electricity to rotational motion, while generators convert rotary motion to electricity.
  57. be True, Receptacles fed from subpanels must have their equipment grounding bar that is electrically isolated from the neutral bar.
  58. bf Safety is the most important aspect of an electrician's job.
  59. bg The fill of metal boxes appears in NEC Tables 314.6 A and B.
  60. bh amperes, named after the French scientist, Andre Marie Ampere
  61. bi False, Per NEC 450.4 a OCPD is no needed.
  62. bj Identified as the "B" leg
  63. bk A bonding screw is green.
  64. bl Exothermic welding involves the fusion of metal materials or copper to rebar.
  65. bm "The permanent joining of metallic parts to form an electrically conductive path that ensures electrical continuity and the capacity to conduct safely any current likely to be imposed."
  66. bn Covers clearances on buildings.
  67. bo High impedance grounding is used for grounding radio towers. NEC 250.20(E)
  68. bp Although a 15amp breaker is above code, it is preferable when considering expansion.
  69. bq Equipment Bonding Jumpers
  70. br False, NEC 312.3, disallows recessing panels in flammable walls.
  71. bs True - NEMA is the acronym for National Electrical Manufacturers Association.
  72. bt True, Per NEC Article 400, only when rated for wet areas.
  73. bu NEC Article 392
  74. bv Liquid Filled and Dry Versions
  75. bw The maximum amount of electrical current a conductor or device can carry before sustaining immediate or progressive deterioration.
  76. bx False, The way to ground a transformer in a commercial building is to place a grounding rod outside or beneath the building.
  77. by 2 ground rods 6 ft apart.
  78. bz NEC Article 408 covers panel board applications.
  79. ca False, Per NEC 450.23-26 liquid-filled transformers have different requirements based on the dielectric fluid.
  80. cb Chapter 9, Table 4 outlines trade size of conduit as well as raceway size.
  81. cc To locate wire type and size to be installed. Repeat for each conductor, keeping a running total. Derate by 40% to ge the total raceway area.
  82. cd A mandatory act or condition
  83. ce Electricians can use sheet metal screws for bonding when those screws are green and have hexagonal heads (NEC 250.8), but it is generally considered unwise.
  84. cf True (NEC 250.92B)
  85. cg False, ceiling tiles are never appropriate device support.
  86. ch Per NEC 422.11, The size of the breaker to use.
  87. ci Water Pipe, A grounding system designed as a main service ground takes priority over a system that provides grounding alone. While requiring as large a grounding surface area as possible is advantageous, the grounding system must be able to support the service on its own.
  88. cj 3ft.
  89. ck False, The negative terminal has a surplus of electrons and the positive terminal has a surplus of protons
  90. cl NEC 250.66 provides the sizing of grounding electrode conductors
  91. cm NEC Section 250-126
  92. cn Equipment fastened or connection between metal parts.
  93. co Per NEC 250.26, The Neutral conductor serves as ground.
  94. cp 6.25amps, 750 watts divided by 120V is 6.25amps
  95. cq NEC Article 230
  96. cr Is a measure of the amount of electric charge passing a point in an electric circuit per unit time.
  97. cs False, Current is fatal to people not Voltage
  98. ct The National Fire Protection Association (NFPA) sponsors the NEC
  99. cu Electron
  100. cv Air, does not conduct electricity.
  101. cw NEC Article 250
  102. cx NEC Tables Annex C1 and C2 identify both wire sizing and the temperature a wire can handle in amps.
  103. cy Relative to underground service, overhead electrical service is simpler to troubleshoot and repair and is the easier option when running electricity across roadways, waterways, and right-of-ways.
  104. cz inside
  105. da False, unless it is 8ft above the rim of the shower zone and listed for wet environments.
  106. db To ground a subpanel in the another building, run bare copper wire from subpanel to ground rod inside or outside.
  107. dc The smallest grounding conductor permitted is 6 awg or larger.
  108. dd Isolated systems are used in healthcare facilities due to explosive gases.
  109. de False, a TVSS is only for protecting against predictable anomalies, and short-duration spikes of high-voltage.
  110. df Per NEC 230.10, vegetation is disallowed as a support device.
  111. dg active or live
  112. dh 20ft. of bare copper not smaller than 2 AWG
  113. di Grounding
  114. dj Heart fibrillation is the major cause of death from electrical shock. The shock disrupts the normal electrical brain to heart signals.
  115. dk Definitions
  116. dl True, like a refrigerator the appliance should continue running when another component fails, the grounding system must be able to support the service on its own.
  117. dm Voltage level, amount of protective clothing, and moisture on skin or outerwear all impact a ground connection.
  118. dn Covers the sizes of alternating current grounding electrode conductors.
  119. do True, An attic with a furnace requires a receptacle to honor safety and sound wiring requirements.
  120. dp sledge hammer, hammer drill, and ground rod pounders
  121. dq 10ft.
  122. dr A 12in. counter requires a receptacle because it holds small appliances.
  123. ds 15v 120V/8
  124. dt Using ohms law, the fuse value would be 10V/2ohms or 5 amperes. However, if the voltage increased slightly and harmlessly, the fuse would blow. Therefore the fuse should be based on the nature of the load.
  125. du True, Per NEC 422.35
  126. dv True, Per NEC 300.11 hanging a second support when running new over old is acceptable and a common practice.
  127. dw True, although there are exceptions.
  128. dx To ground a subpanel in the same building, run a four-wire system from main panel to subpanel.
  129. dy The thicker the wire. Gauge was designed to reflect the number of wires that can fit through an opening.
  130. dz 1.Insulated Housings.
    2. Ground prong on plugs.
  131. ea Bonding jumpers
  132. eb To make a proper grounding system using three 200-amp disconnects, use a ground wire of sufficient size to go from panel to panel with a lug, screw, or ground bar, if provided.
  133. ec Annex C of NEC covers conduit and tubing fill for conductors and fixture wire fill.
  134. ed Per NEC 392.7(B) Bonding of all cable tray sections is required.
  135. ee In a parallel circuit, each load is connected in a separate path. In a circuit schematic, the branch lines are parallel.
  136. ef True, Per NEC 210.11
  137. eg Per NEC 450.3, phases must arrange in a particular order: A, B, C, from left to right or from top to bottom as seen from the front.
  138. eh NEC 314.3
  139. ei Water, lacks insulation qualities because it conducts electricity. As a result, it is one of the most hazardous substances in an electrical environment.
  140. ej NEC requires a minimum of 3 watts per residential sq ft. The kitchen may require more for better lighting.
  141. ek The sizes of copper and aluminum wire, as well as the coating of wire that has fewer than three current carrying wires in a cable or conduit or that is buried in the earth.
  142. el 18ft.
  143. em A main bonding jumper and a system bonding jumper.
  144. en A bonding jumper should be installed inside or outside raceway within 6ft. of attachment. (NEC 250.118)
  145. eo NEC 220.16 - 220.20 cover appliance calculations.
  146. ep Per NEC 402.3, FFH-2 fixture wiring is useable up to 75 degrees C
  147. eq False, Per 360.12, FMT is disallowed from battery storage areas
  148. er Marked CO/ALR
  149. es 1. Listed Pressures Connectors
    2. Terminal Bars
    3. Pressure Connectors Listed As Ground and Bonding Equipment
    4. Exothermic Welding
    5. Machine screw-type fasteners that engage not less than two threads or are screwed with nuts
  150. et NEC 110.23 states that, "Unused current transformers associated with potentially energized circuits shall be short circuited."
  151. eu False, NEC 402.5 defines ampacity requirements for fixture wires.
  152. ev Ground Rod
  153. ew In DC, electrons flow in one direction only. In AC, electrons "saw" back and forth in the load. AC is easier to manufacture and is most often delivered and used in a residence, business, or factory.
  154. ex Chapter 5
  155. ey False, grounding conuctors belong on the green screws.
  156. ez NEC Article 358 covers EMT.
  157. fa Grounded
  158. fb Per NEC 250.116 ground rods should attach to metal fences
  159. fc 2/0 or 4/0
  160. fd Per NEC 450.46 only transformers over 100KW require a drain, however installing a drain in case of dielectric spills is good practice.
  161. fe According to the NEC, an outlet is defined as a point in a circuit at which current is taken.
  162. ff A grounding conductor is green.
  163. fg True, One is required, Two are suggested.
  164. fh 12ft.
  165. fi Ground and Arc are two types of electrical faults.
  166. fj 350MCM or 400MCM
  167. fk False, Arcing is the phenomenon in which electrons jump across insulators to positive terminals, which can occur through air, paper, rubber, or any other insulator.
  168. fl Deicing systems
  169. fm NEC Article 386 covers metallic or metal raceway; NEC Article 388 covers PVC pipe.
  170. fn False, Protecting a motor and a motor circuit are two very different things
  171. fo "Authority Having Jurisdiction (AHJ)"
  172. fp 1. The Builder
    2. Homeowner
    3. Inspector
    4. Boss
  173. fq Yes, a receptacle is required in close proximity to an air-conditioning unit. At most, it must be 25ft. distant.
  174. fr Terms and Definitions
  175. fs NEC Table 250.66
  176. ft False, demand factors of lighting does not apply to this table.
  177. fu An isolated grounded reciprocal is a separate ground from a device directly to a panel.
  178. fv First determine whether the application is residential. For residential applications, the NEC provides no guidance. The answer for nonresidential applications is based on box fill. For these applications, most electricians calculate between 1 and 1.5 amperes per receptacle.
  179. fw NEC Section 250-119 1-14
  180. fx people and property
  181. fy False, run ground wire from panel to copper water pipe then jump the water meter using grounding clamps.
  182. fz A grounded conductor is a system or circuit that is intentionally grounded.
  183. ga Chapter 3
  184. gb Per NEC 90.4, 510.2, and various local codes, occupancy is permitted in the event of a code violation as long as the occupancy remains unchanged and no hazardous condition exists.
  185. gc An Intrinsically Safe System.
  186. gd For a raceway to be used. Find a value for area larger than the raceway area calculated previously.
  187. ge The size of the largest conductor determines what size ground wire used on a service.
  188. gf Two hots are needed to operate the stove neutral. The timers and clocks can serve as ground for tripping mechanism.
  189. gg A grounding conductor is a conductor or circuit of a wiring system to a grounding electrode (ground rod).
  190. gh Given that power equals voltage times resistance, power in this example is 24 watts (2amp x 12V)
  191. gi Shows in two columns (milimeters and inches), how many wires in trade size you can place in a box.
  192. gj True, Intrinsically safe areas are safe with out enclosure, but enclosure are required for other protections.
  193. gk Smaller its AWG
  194. gl False, NEC 314.4, requires all metallic boxes to be grounded.
  195. gm NEC Article 517
  196. gn According to NEC Article 100, a device that opens and closes a circuit by nonautomatic means automatically closes for a predetermined overcurrent.
  197. go 7.5amps, 1,800 watts divided by 240V is 7.5amps
  198. gp Resistive, impedance, and skin effect.
  199. gq Heat, Magnetism, and Light
  200. gr NEC Section 250-118
  201. gs 1. Branch circuit in which the initial run is encased in AC up to the first receptacle, which is mounted in a plastic box.
    2. Branch circuit in which the initial run is encased in AC up to the first receptacle, which is mounted in a metal box.
    3. clothes closet measuring more than 10 sq ft.
  202. gt A Direct burial clamp is needed to properly connect number 4 copper to a ground rod.
  203. gu Per NEC 220.84, A 21 unit building would be rated at 32% and any occupancy over 62 units rated at 23%
  204. gv NEC is also know as the NFPA 70
  205. gw Visible and within 50 ft.
  206. gx Dedicated
  207. gy Because garage space is not considered livable space, subtract its area from the total living area. The home's livable area 28 x 40 is 1,120ft.
  208. gz 6ft
  209. ha A gounding system is connected to the ground or to a conductive body that extends the ground connection.
  210. hb Damage may occur in the meter and or personal injury.
  211. hc A receptacle with NEMA 5-20R on it has an amperes rating of 20, will take a NEMA-5-15P or NEMA-5-20P plug, and has a voltage rating of 125.
  212. hd The current stays the same cause the doubling is offset by the halving.
  213. he Although not required by NEC, in general any receptacles below grade, including those in finished basements, should be GFCI protected. Receptacles in dwelling accessory building with floors at or below grade level require GFCI protection. unfinished basements require GFCI-protected receptacles.
  214. hf A device designed to trip when an overcurrent is detected.
  215. hg True, when those water pipes are grounded.
  216. hh "All circuit conductors between the service equipment, the source of a separately derived system, or other power source of a separately derived system, or other power supply source and the final branch-circuit overcurrent device,"
  217. hi NEC 250.114
  218. hj False, The term electricity is defined as the imbalance in the negative charges, or electrons, between two points.