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Updated questions and correct answers for an electrician's licensing exam. It covers various topics, including nec articles, grounding systems, circuit breakers, and electrical installations. It is designed to help electricians prepare for their licensing exam by testing their knowledge of electrical codes and safety practices. The questions cover a wide range of topics, from nec article definitions to grounding procedures and electrical safety. This study guide is a valuable resource for anyone preparing for an electrician's licensing exam, offering a comprehensive review of essential concepts and regulations.
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NEC Article ______ defines breakers and fuses. - CORRECT ANSWERS✅✅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. - CORRECT ANSWERS✅✅Annex C of NEC covers conduit and tubing fill for conductors and fixture wire fill. NEMA stands for National Electrical Manufacturers Association - CORRECT ANSWERS✅✅True - NEMA is the acronym for National Electrical Manufacturers Association. Which NEC tables(s) cover(s) the fill of metal boxes? - CORRECT ANSWERS✅✅The fill of metal boxes appears in NEC Tables 314.6 A and B. What NEC table would you go to to find trade size of conduit and raceway size? - CORRECT ANSWERS✅✅Chapter 9, Table 4 outlines trade size of conduit as well as raceway size. The smaller kitchen counter requiring a receptacle is _____ inches. - CORRECT ANSWERS✅✅A 12in. counter requires a receptacle because it holds small appliances. A 12-foot hallway requires one receptacle to meet code. (True or False) - CORRECT ANSWERS✅✅True, One is required, Two are suggested. NEC Article 100 is dedicated to? - CORRECT ANSWERS✅✅Definitions NEC section 250.28A provides information on what material can be used for a main bonding jumper. (True or False) - CORRECT ANSWERS✅✅True
A bonding screw is what color? - CORRECT ANSWERS✅✅A bonding screw is green. A subpanel requires a main bonding screw? (True or False) - CORRECT ANSWERS✅✅False, A main bonding screw is unneeded in a subpanel. NEC Table _____ covers grounding electrode conductor sizing. - CORRECT ANSWERS✅✅NEC Table 250. Define a grounding system according to NEC. - CORRECT ANSWERS✅✅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? - CORRECT ANSWERS✅✅Is dedicated to the sizes of the equipment grounding conductor What is the NEC definition of a circuit breaker? - CORRECT ANSWERS✅✅A device designed to trip when an overcurrent is detected. What is the subject of NEC Section 250-2D? - CORRECT ANSWERS✅✅Bonding jumpers ______ is the subject of NEC Section 680.20. - CORRECT ANSWERS✅✅Electrical installations at permanently installed pools. Which NEC Section covers types of equipment grounding conductors. - CORRECT ANSWERS✅✅NEC Section 250. Which NEC sections covers identification of equipment grounding conductors? - CORRECT ANSWERS✅✅NEC Section 250. Which NEC Section covers ground terminal identification on wiring devices? - CORRECT ANSWERS✅✅NEC Section 250. True or False.
The required clearance for a 400-amp service drop across a major roadway is? - CORRECT ANSWERS✅✅18ft. According to NEC 230.9(A), an unsheathed service conductor must be _____ft. from a window that opens. - CORRECT ANSWERS✅✅3ft. Which NEC Article covers grounding? - CORRECT ANSWERS✅✅NEC Article 250 Explain the proper way to ground a subpanel in the same building. - CORRECT ANSWERS✅✅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. - CORRECT ANSWERS✅✅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. - CORRECT ANSWERS✅✅Grounded Describe a grounding conductor. - CORRECT ANSWERS✅✅A grounded conductor is a system or circuit that is intentionally grounded. Define the term grounding conductor. - CORRECT ANSWERS✅✅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. - CORRECT ANSWERS✅✅Electron Voltage can be fatal to a person. (True or False) - CORRECT ANSWERS✅✅False, Current is fatal to people not Voltage What determines the severity of an electrical shock? - CORRECT ANSWERS✅✅Voltage level, amount of protective clothing, and moisture on skin or outerwear all impact a ground connection.
Grounding reduces the voltage that might cause a fatal electrical shock by allowing excess current to flow to the ground. (True or False) - CORRECT ANSWERS✅✅True The standard length for IMC is? - CORRECT ANSWERS✅✅Two outside ground wire are needed on a 400 amp. What size grounding electrode conductor is needed for to connect to a concrete encased electrode? - CORRECT ANSWERS✅✅4 awg. 250.66(B) A grounding conductor is what color? - CORRECT ANSWERS✅✅A grounding conductor is green. What color triangle on the face of the receptacle is used to identify an isolated ground receptacle? - CORRECT ANSWERS✅✅orange. 406.(3)(D) according to 250.8, is exothermic welding a permitted method of connecting grounding electrode conductors? - CORRECT ANSWERS✅✅yes. 250.8(A)(4) Why do electric ranges require a 4 wire feeder? - CORRECT ANSWERS✅✅To separate neutral and grounding at the appliance. What is the proper way to test conduit for proper grounding? - CORRECT ANSWERS✅✅To test conduit for proper grounding, check ohms or use 120V receptacle to check for proper connection. NEC Article _____ addresses bonding requirements in healthcare facilities. - CORRECT ANSWERS✅✅NEC Article 517 A(n) _____ circuit is designed and created for one load. - CORRECT ANSWERS✅✅Dedicated
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. - CORRECT ANSWERS✅✅20ft. of bare copper not smaller than 2 AWG 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. - CORRECT ANSWERS✅✅Green finish NEC requires a panelboard circuit directory. (True or False) - CORRECT ANSWERS✅✅True. A circuit has a source of 10V and a resistance of 2ohms. What is the current flow? - CORRECT ANSWERS✅✅Using ohms law, the current value would be 10V/2ohms or 5 amperes. What is the greatest advantage of AC over DC? - CORRECT ANSWERS✅✅The ability of AC to be transformed. Which of the following is not a conductor? Gold, Silver, Copper, rubber - CORRECT ANSWERS✅✅Rubber is an insulator Current is measured in _____. - CORRECT ANSWERS✅✅amperes, named after the French scientist, Andre Marie Ampere What is the constant in a series circuit? - CORRECT ANSWERS✅✅Amps are constant throughout a series circuit. A transformer has a voltage ratio of 8:1 and an input of 120V. What is the output Voltage? - CORRECT ANSWERS✅✅15v 120V/ What is the largest American Wire Gauge size? - CORRECT ANSWERS✅✅4/0 AWG
The major cause of death from electrical shock is _____. - CORRECT ANSWERS✅✅Heart fibrillation is the major cause of death from electrical shock. The shock disrupts the normal electrical brain to heart signals. As the diameter of wire increases, resistance to flow increases. (True or False) - CORRECT ANSWERS✅✅False, the smaller the diameter increases resistance to flow. A(n) _____ acts as a fuse, but is usually resettable. - CORRECT ANSWERS✅✅Circuit Breaker If you have 750 watts total in bulbs, how many amps is it at 120V? - CORRECT ANSWERS✅✅6.25amps, 750 watts divided by 120V is 6.25amps The larger the diameter of a piece of wire, the _____ its AWG value. - CORRECT ANSWERS✅✅Smaller its AWG If you have 1,800 watts for baseboard heat, at 240V how many amps are there? - CORRECT ANSWERS✅✅7.5amps, 1,800 watts divided by 240V is 7.5amps in a box fill calculation, a 12 AWG conductor has a cubic inch volume of _______? - CORRECT ANSWERS✅✅2.25 cubic inches When sizing a junction box using the trade size method, what is the multiplier for a straight pull? - CORRECT ANSWERS✅✅8X the conduit in the straight pull on that wall. What determines the rating of a branch circuit? - CORRECT ANSWERS✅✅The rating of the OCPD What is an outlet? - CORRECT ANSWERS✅✅According to the NEC, an outlet is defined as a point in a circuit at which current is taken. What are NEC requirements for a receptacle on a peninsula? - CORRECT ANSWERS✅✅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.
The demand load for a 14kW range is? - CORRECT ANSWERS✅✅Col. C for 1 appliance is 8kW. this is increased 5% for each kW over 12kW 14 - 12=2kW over= 10% increase of base. 8kW X 1.10= 8.8kW