A. Connected to the equipment ground B. Bonded to the box C. Connected to nearest water pipe D. Connected to a ground rod

Transcription

1 Journeyman and Master Common Exam 2 1 The grounding terminal of a grounding-type receptacle installed in a metal box shall be? A. Connected to the equipment ground B. Bonded to the box C. Connected to nearest water pipe D. Connected to a ground rod 2 A #10 AWG Copper equipment grounding conductor can be used for branch circuits rated up to? A. 30A B. 40A C. 50A D. 60A 3 A #8 AWG copper grounding electrode conductor for a 100A 120/240V residential service is attached to a metal water pipe. Which statement below best describes its code requirement? A. Not permitted B. Must be enclosed in a raceway or armored cable C. Must only be connected to a ground rod D. None of the above 4 The aluminum grounding electrode required for an 800A service consisting of 3 sets of 400 kcmil RHW Aluminum conductors in parallel is? A. 1/0 Al B. 2/0 Al C. 3/0 Al D. 4/0 Al

2 5 A grounding electrode connection is required at a separate building or structure under which of the following conditions? A. More than one branch circuit B. Contains equipment requiring grounding C. Equipment grounding conductor is ran with the feeder D. All the above 6 A ground rod must be a minimum of in length? A. 6 feet B. 8 feet C. 10 feet D. 12 feet 7 The building steel of a metal frame building is considered a grounding electrode when? A. 8 feet of a single metal structure is in direct contact with earth B. It is bonded to an underground metal water pipe C. Connected to 20 of rebar enclosed in 2 or more concrete D. The building is bolted to a concrete slab 8 Which of the following is not an approved grounding electrode? A. A ten foot length of buried copper water pipe B. 8 x 5/8 iron ground rod C. 8 x 5/8 stainless steel rod D. 10 #4 AWG bare copper wire in concrete footer

3 9 Flexible metal conduit installed where flexibility is not a requirement shall be permitted for grounding purposes if? A. The length does not exceed 6 feet B. The circuit is rated 20A or less C. It is terminated in listed grounding fittings D. All of these 10 What is the minimum size copper equipment ground conductor permitted to ground 400A service equipment? A. #8 AWG B. #6 AWG C. #3 AWG D. #1/0 AWG 11 A raceway is installed below grade in sand. The interior of the raceway is considered a? A. Dry location B. Wet location C. Moist location D. Damp location 12 A 20A 120V UF, GFCI protected cable circuit is buried from a dwelling to a detached building. The minimum burial depth of the cable is? A. 6 inches B. 12 inches C. 18 inches D. 24 inches

4 13 Cables are installed exposed or concealed under metal corrugated sheet roof decking. What is the minimum allowed distance between the cable or conduit to the nearest surface of the roof decking? A. 1 1/8 B. 1 ¼ C. 1 3/8 D. 1 ½ 14 The minimum length of free conductor required by code to be left in boxes for splicing is? A. 3 B. 4 C. 5 D The minimum burial depth of a 15A 125V GFCI protected UF cable run to a lamppost without passing underneath a driveway is? A. 6 inches B. 12 inches C. 18 inches D. 24 inches

5 16 When supporting Romex (NM cable) boring through wooden framing members such as joists, rafters, or studs, how close to the nearest edge of these structures may it be installed? A. 1 ¼ B. 1 1/8 C. 1 3/8 D. 1 ½ 17 A vertical run of 4 inch rigid conduit is installed to a height of 250 ft. How many conductor supports are needed for the 500kcmil THHN copper conductors? A. None B. 3 C. 4 D Raceways installed underground are considered to be in? A. Damp locations B. Wet locations C. Dry locations D. Moist locations 19 There are 10 current-carrying conductors in a 1 IMC conduit. By what per cent of the allowable ampacity of Table be reduced? A. 50% B. 60% C. 70% D. 80%

6 20 What is the ampacity of four 4/0 AWG THHN copper current-carrying conductors in a raceway installed in an ambient temperature of 45 C? A A B A C A D A 21 Conductors of size and larger shall be permitted to be run in parallel? A. #10 AWG B. 500kcmil C. 1/0 D. 2/0 22 Wall mounted boxes for luminaires (light fixtures) must be designed to support a minimum weight of? A. 6 lbs B. 10 lbs C. 25 lbs D. 50 lbs 23 The computed load for a 120/240V single phase dwelling service is 185 amps. What is the minimum size 75 C Aluminum service entrance conductor permitted by the code? A. 2/0 B. 3/0 C. 4/0 D. 250kcmil

7 24 A straight-pull junction box will be installed in a 4 conduit run to splice three 350kcmil 208V conductors. What is the required minimum length of this junction box? A. 48 B. 32 C. 24 D Armored cables are to be secured within of every outlet box and junction box? A. 6 B. 8 C. 12 D All bends in armored cable must be made so that the inner edge of any bend shall not be less than times the diameter of the AC cable? A. 5 B. 4 C. 3 D. 2

8 27 When AC cable is installed in thermal insulation its conductors must be rated at a minimum of? A. 60 C B. 75 C C. 90 C D. 30 C 28 In unfinished basements and crawl spaces Non-metallic sheathed (NM) cable sheath shall extend into each box a minimum of? A. 1 inch B. ½ inch C. ¼ inch D. 6 inches 29 NM cable must be supported----? A. Every 4 ½ B. Every 4 C. Every 4 D. Every 4 ½ 30 When passing through a floor NMC must be protected for a distance of above the floor where it emerges? A. 4 B. 6 C. 8 D. 10

9 31 NMC must be secured within of a metal box? A. 6 inches B. 8 inches C. 10 inches D. 12 inches 32 The taper of a cutting die for field threading rigid conduit is? A. ½ taper per foot B. 5/8 taper per foot C. ¾ taper per foot D. Not tapered at all 33 In general rigid conduit must be supported within inches of every box, junction box, Panel or any other termination point? A. 12 B. 60 C. 36 D Flexible metal conduit shall not be used? A. In wet locations B. For motor leads C. Concealed inside walls D. Concealed inside attics

10 35 How many #10 AWG THHN conductors are allowed in a ¾ EMT conduit? A. 5 B. 10 C. 15 D A flexible cord connection is made directly to the load of a busway plug-in device. The maximum length of the cord to the tension take-up device is feet? A. 3 B. 4 C. 5 D Horizontal installations of non-metallic wireways shall be supported at distances not exceeding feet unless otherwise listed for other support intervals? A. 1 B. 2 C. 3 D Which of the following is not normally acceptable use for flexible cords? A. Pendants B. Elevator cables C. Portable lamps D. Attached to building surface

11 39 The identification of the grounded conductor in a flexible cord shall be permitted to be? A. Any color braid with contrasting tracer B. Black color conductor C. A blue braid D. Green insulation 40 Fixture wires shall not be smaller than? A. #18 AWG Cu B. #16 AWG Cu C. #14 AWG Cu D. #12 AWG Cu 41 All switches and circuit breakers used as switches shall be located so that the center of the operating handle is not more than above the floor? A. 6 feet B. 6 ½ feet C. 6feet 7 inches D. 6 feet 8 inches 42 Tamper resistant receptacles are not required in which rooms? A. Kitchens B. Laundries C. Basements D. They are required in all rooms

12 43 Porcelain pull chain fixtures are allowed in clothes closets. A. True B. False 44. A fixture that weighs more than 6 pounds shall not be supported by the screw shell of a lamp holder. A. True B. False 45 In a dwelling which of the following built-in appliances can be cord and plug connected if the cord is not readily accessible? A. Dishwasher B. Garbage disposal C. Trash compactor D. None of the above 46 Electric drinking fountains must be protected by? A. A dedicated 20A circuit B. AFCI breaker C. GFCI breaker or outlet D. A single receptacle 47 Bonding of metal parts in a swimming pool shall be made by? A. #8 AWG solid, bare or insulated copper B. #8 AWG stranded insulated copper C. #6 AWG bare copper D. #6 stranded copper insulated

13 48 The #8 AWG solid copper bonding conductor for a swimming pool is not required by the code to be connected to? A. Main service panel B. Metal ductwork 12 or higher above pool C. Metal fence 5 from inside edge of the pool D. Deck reinforcing metal 49 The metal bands used to secure wooden staves of a hot tub are not required to be bonded. A. True B. False 50 The minimum height of a community antenna system coaxial cable (CATV) above a wading pool is? A. 8 B. 10 C. 12 D. 14

14 Answers to Common Questions for the Journeyman and Master Exam 2 1 B 26 A 2 D 27 C 3 B 28 C 4 A 29 D 5 D 30 B 6 B 31 D 7 C 32 C 8 D 33 C 9 D 34 A 10 C 35 B 11 B 36 D 12 B 37 C 13 D 38 D 14 D 39 A 15 B 40 A 16 A 41 C 17 D 42 D 18 B 43 B 19 A 44 A 20 C 45 D 21 C 46 C 22 A 47 A 23 C 48 A 24 C 49 A 25 C 50 B