Journeyman Electrician's Licensing Exam Questions With Correct Answers

NEC Article ______ defines breakers and fuses. - Answer According to NEC Article 100, a device that opens and closes a circuit by nonautomatic means automatically closes for a predetermined overcurrent. Annex _____ of NEC covers conduit fill. - Answer Annex C of NEC covers conduit and tubing fill for conductors and fixture wire fill. NEMA stands for National Electrical Manufacturers Association - Answer True - NEMA is the acronym for National Electrical Manufacturers Association. What does it mean when a receptacle has "NEMA 5-20R" on it? - Answer 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. NEC Tables 310-10 through 310-21 provide information on. - Answer 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. Which NEC tables(s) cover(s) the fill of metal boxes? - Answer The fill of metal boxes appears in NEC Tables 314.6 A and B. NEC Article _____ address EMT. - Answer NEC Article 358 covers EMT. Which NEC articles cover the installation requirements for RMC, IMC, and EMT? - Answer NEC Articles 342, 344, and 358 outline the installation requirements of RMC, IMC, and EMT. IN NEC 2008, what does Table 370.6A cover? - Answer Shows in two columns (milimeters and inches), how many wires in trade size you can place in a box. What NEC table would you go to to find trade size of conduit and raceway size? - Answer Chapter 9, Table 4 outlines trade size of conduit as well as raceway size. NEC Articles _____ and _____ covers metallic and non-metallic raceways in buildings. - Answer NEC Article 386 covers metallic or metal raceway; NEC Article 388 covers PVC pipe. The Panel Board requirements for Application in Construction appear in NEC Article? - Answer NEC Article 408 covers panel board applications. The smaller kitchen counter requiring a receptacle is _____ inches. - Answer A 12in. counter requires a receptacle because it holds small appliances. What new code is needed for protection in all habitable spaces? - Answer According to new codes, ARC fault protection is needed many additional parts of the house. A 12-foot hallway requires one receptacle to meet code. (True or False) - Answer True, One is required, Two are suggested. NEC Article 100 is dedicated to? - Answer Definitions The main ground on a service is a(n) _____. - Answer Ground Rod What does NEC Section 250-28A require? - Answer A main bonding jumper and a system bonding jumper. NEC section 250-28A provides information on what material can be used for a main bonding jumper. (True or False) - Answer True A bonding screw is what color? - Answer A bonding screw is green. A subpanel requires a bonding screw? (True or False) - Answer False, A bonding screw is unneeded in a subpanel. Name the methods of sizing bonding jumpers outlined in NEC Section 250-28D. - Answer 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. NEC Table _____ covers grounding electrode conductor sizing. - Answer NEC Table 250.66 Which NEC reference identifies wire sizing and the temperature a wire can handle in amps? - Answer NEC Tables Annex C1 and C2 identify both wire sizing and the temperature a wire can handle in amps. Define a grounding system according to NEC. - Answer A gounding system is connected to the ground or to a conductive body that extends the ground connection. What is the topic of NEC Section 250-122? - Answer Is dedicated to the sizes of the grounding conductor What is the NEC definition of a circuit breaker? - Answer A device designed to trip when an overcurrent is detected. NEC Section 300-13 provides information on? - Answer Mechanical and Electrical continuity conductors. What is the subject of NEC Section 250-2D? - Answer Bonding jumpers ______ are the subject of NEC Section 680-20. - Answer Electrical installations at permanently installed pools. Which NEC Section covers equipment grounding conductors. - Answer NEC Section 250-118 Which NEC sections covers identification of equipment grounding conductors? - Answer NEC Section Which NEC Section covers ground terminal identification. - Answer NEC Section 250-126 Bonding is the establishment of ______ connection between metal parts. - Answer Reliable NEC Section 250-134 provides information on what topic? - Answer Equipment fastened or connection between metal parts. Equipment grounding conductor _____ is (are) discussed in NEC Section 250-130. - Answer Connections NEC Section 250-118 states that a grounded conduct must run _____ flexible conduit. - Answer inside NEC Section _____ oversees bonding of flexible type conduit. - Answer NEC Section 250.118(5) Which NEC article covers cable trays? - Answer NEC Article 392 What is the proper procedure for bonding a motor conduit with metal flex? - Answer A bonding jumper should be installed inside or outside raceway within 6ft. of attachment. (NEC 250.118) Threaded pipe can be used for bonding purposes? (True or False) - Answer True (NEC 250.92B) Shoulder fittings with locknuts are allowable as bonding devices? (True or False) - Answer True (NEC 250.92B) What kind of information does NEC Section 250-66 cover? - Answer Covers the sizes of alternating current grounding electrode conductors. NEC Section 250-102 is devoted to equipment _____. - Answer Equipment Bonding Jumpers Give guidelines for using sheet metal screws as bonding agents. - Answer 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. Which NEC article covers service drops? - Answer NEC Article 230 According to NEC, trees are approved service conductors. (True or False) - Answer False, NEC does not approve tress as service conductors. 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) - Answer False, No disconnect is required. Above sidewalks accessible by pedestrians, a service drop not over 600V must be at least _____ft. high. - Answer 10ft. What is the service drop distance, in feet, of a 200-amp service crossing residential property? - Answer 12ft. The required clearance for a 400-amp service drop across a major roadway is? - Answer 18ft. Describe the information covered in NEC Article 230.9 (A) - Answer Covers clearances on buildings. According to NEC 230.9(A), an unsheathed service conductor must be _____ft. from a window that opens. - Answer 3ft. Which NEC Article covers grounding? - Answer NEC Article 250 System and circuit grounding involves taking alternating current to ground? (True or False) - Answer True The process of equipment _____ exposes current-carrying parts to a grounding system. - Answer Grounding Small power tools are protected in what two ways? - Answer 1.Insulated Housings. 2. Ground prong on plugs. 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) - Answer False, run ground wire from panel to copper water pipe then jump the water meter using grounding clamps. Explain the proper way to ground a subpanel in the same building. - Answer To ground a subpanel in the same building, run a four-wire system from main panel to subpanel. Discuss the proper way to ground a subpanel in another building. - Answer To ground a subpanel in the another building, run bare copper wire from subpanel to ground rod inside or outside. Something that is ______ is connected to ground or to a conductive body that extends the grounding connection. - Answer Grounded Describe a grounding conductor. - Answer A grounded conductor is a system or circuit that is intentionally grounded. Define the term grounding conductor. - Answer A grounding conductor is a conductor or circuit of a wiring system to a grounding electrode (ground rod). A(n) _____ is the fundamental particle of electricity. - Answer Electron