EVITP National Electrical Code Articles, Electrical level 3 commercial electrical services, Branch-Circuit, Feeder, and Service Design, Grounding and Bonding Level II, Load Calculations- Branch and Feeder Circuits ACTUAL EXAM COMPLETE QUES

EVITP National Electrical Code Articles, Electrical level 3 commercial electrical services, Branch-Circuit, Feeder, and Service Design, Grounding and Bonding Level II, Load Calculations- Branch and Feeder Circuits ACTUAL EXAM COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS || 100% GUARANTEED PASS LATEST VERSION 1. Article 90 - ANSWER Introduction 2. Article 100 - ANSWER Definitions 3. Article 110.26 - ANSWER Working space 4. Article 210 - ANSWER Branch circuits 5. Article 210.7 - ANSWER Gfci protection for personal 6. Article 210.50 - ANSWER Required outlets 7. Article 215 - ANSWER Feeders 8. Article 220 - ANSWER Branch circuit, feeder and service calculations 9. Article T225.55 - ANSWER Range demand factors 10. Article 225 - ANSWER Outside branch circuits and feeders 11. Article 230 - ANSWER Services 12. Article 240 - ANSWER Over Current protection 13. Article 240.21 - ANSWER Taps and x fmr secondary conductor 14. Article 250 - ANSWER Grounding and bonding 15. Article 250.52 - ANSWER Grounding electrodes 16. Article 250.66 - ANSWER Grounding electrode conductor 17. Article T250.122 - ANSWER Equipment grounding conductor 18. Article 300 - ANSWER General requirements for wiring methods and materials 19. Article T300.5 - ANSWER Minimum cover requirements 20. Using NEC Section 250-8, identify five methods of making connections. - ANSWER 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 21. Underground service is simpler to troubleshoot and repair than overhead service? (True or False) - ANSWER 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. 22. In NEC, Table _____ provides the sizing of grounding electrode conductors. - ANSWER NEC 250.66 provides the sizing of grounding electrode conductors 23. Describe the process for bonding three 200-amp disconnects to make a proper grounding system. - ANSWER 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. 24. In terms of AWG, what is the minimum grounding conductor size permitted? - ANSWER The smallest grounding conductor permitted is 6 awg or larger. 25. The way to ground a transformer in a commercial building is to place a grounding rod inside the building? (True or False) - ANSWER False, The way to ground a transformer in a commercial building is to place a grounding rod outside or beneath the building. 26. Why do stoves require a four-wire system? - ANSWER Two hots are needed to operate the stove neutral. The timers and clocks can serve as ground for tripping mechanism. 27. Why do dryers require a four-wire system? - ANSWER Two hots are needed to operate the heater neutral. The timers can serve as ground for tripping mechanism. 28. Air-conditioning units, hot water heaters, and baseboard heat require a four wire system? (True or False) - ANSWER False, a A/C unit needs only 220 and a ground to complete the circuit. 29. Which of the following NEC sections outlines which air-conditioning systems requires no grounding? - ANSWER NEC 250.114 30. Explain where and why isolated systems are used. - ANSWER Isolated systems are used in healthcare facilities due to explosive gases. 31. Electricians should put grounded conductors on yellow reciprocal screws? (True or False) - ANSWER False, grounding conuctors belong on the green screws. 32. On a 200-amp service, the electrician should use _____ or _____ size grounded conductor in the service cable. - ANSWER 2/0 or 4/0 33. When using 500 MCM, _____ or ______ size ground wire is appropriate on a 400-amp service. - ANSWER 350MCM or 400MCM 34. Name a common application for high impedance grounding. - ANSWER High impedance grounding is used for grounding radio towers. NEC 250.20(E) 35. What is the proper way to test conduit for proper grounding? - ANSWER To test conduit for proper grounding, check ohms or use 120V receptacle and touch to ground to check for voltage. 36. How does an NEC violation affect the occupancy of an existing installation? - ANSWER 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. 37. The maximum operating temperature of type FFH-2 fixture wiring is? - ANSWER Per NEC 402.3, FFH-2 fixture wiring is useable up to 75 degrees C 38. NEC Article _____ addresses bonding requirements in healthcare facilities. - ANSWER NEC Article 517 39. FMT conductors are appropriate for battery storage areas. (True or False) - ANSWER False, Per 360.12, FMT is disallowed from battery storage areas 40. A circuit that cannont cause a fire in a hazardous condition is called a(n) _____ system. - ANSWER An Intrinsically Safe System. 41. When local ordinance superseded or administers NEC, NEC uses what phrase? - ANSWER "Authority Having Jurisdiction (AHJ)" 42. A(n) _____ circuit is designed and created for one load. - ANSWER Dedicated 43. NEC Chapter _____ specifies conduit fill requirements for fiber-optic cabling. - ANSWER Chapter 9 44. Which NEC chapter discusses fixture wiring and fixture wires. - ANSWER Chapter 3 45. NEC 90.1(A) states that the purpose of NEC is the "practical safeguarding of _____ from hazards arising from the use of electricity". - ANSWER people and property 46. NEC Article 426 recognizes which three kinds of heating systems? - ANSWER Resistive, impedance, and skin effect. 47. What is proper phase arrangement when wiring a three-phase panelboard? - ANSWER 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. 48. When installing an autotransformer, it is important to remember to insert an OCPD in series with the shunt winding. (True or False) - ANSWER False, Per NEC 450.4 a OCPD is no needed. 49. Squirrel cage motors are controlled by - ANSWER variable frequencies 50. The type of controller can vary - ANSWER depending on the requirements of the motor 51. MOV is connected - ANSWER across a coil intended to operate on 120 volts 52. Double acting pushbuttons - ANSWER contain both normally open and normally closed contacts 53. Schematics are always drawn to show - ANSWER components in their de-energized state 54. limit switch normally open held closed - ANSWER 55. limit switch normally closed help open - ANSWER 56. Jogging and inching - ANSWER are methods employed to move a motor with short jabs of power 57. Jogging is accomplished by - ANSWER momentarily connecting the motor to full line voltage 58. Inching is accomplished by - ANSWER momentarily connecting the motor to reduced voltage 59. Normally closed push button symbol is characterized by - ANSWER drawing the movable contact below and ouching the two momentary contacts 60. When pressure is removed - ANSWER a spring returns the movable contact to its normal position 61. If the silence push button is pressed - ANSWER coil CR energizes and both CR contacts change position 62. Limit switches are drawn - ANSWER by adding a wedge to one of the four basic switches 63. most common coil symbol used in schematic diagrams is - ANSWER the circle 64. a very common selector switch is called the - ANSWER MAN-OFF AUTO 65. AUTO - ANSWER automatic 66. MAN - ANSWER manual 67. Simplest manual motor startes resemble a - ANSWER toggle switch 68. A toggle switch lever is mounted - ANSWER on the front of the started and is used to control the on and off operation of the motor 69. the automatic restart feature can be a disadvantage on equipment such as - ANSWER lathes, milling machines, saws, drill presses and any other type of machine that may have an operator present 70. Manual push button line-voltage starters are manufactured - ANSWER with two of three load contacts 71. to major types of overload relays are - ANSWER thermal and magnetic 72. Bimetal strip is made by - ANSWER bonding together two different types of metal that expand at different rates 73. Bimetal strip trip range is adjusted by - ANSWER turning a knob 74. the adjustment knob permits the overload relate to be adjusted between - ANSWER 100% - 115% 75. dashpot oil - ANSWER a special type of oil used for filling a dashpot timer 76. as current flows through the coil - ANSWER a magnetic field is developed around the coil 77. relays - ANSWER electromechanical switch with auxiliary contacts 78. as a general rule - ANSWER they are not intended to control large amounts of current 79. current ratings for most relays are between - ANSWER 1- 10 amperes 80. a bridge type relay operates by - ANSWER drawing a piece of metal or plunger inside a coil