2. Electric Wiring 6831.17

3. Conductor A material that allows electricity to move readily and offers low resistance Example: copper, aluminum and water

4. Insulator A material that will not conduct electricity Example: rubber and plastic

6. Wire Copper is one of the best conductors of electricity

7. Wire Aluminum wire has to be one size larger to carry same amount of current

9. Copper Wire Copper wire is preferred, but if aluminum wire is used, one size larger wire must be used to carry the same electrical current.

10. Copper Wire Example: go from a size 10 copper to a size 8 aluminum Remember: smaller number, larger wire

11. Romex™ Most wiring used in residential construction is this type

12. Wire Size is measured in gauge The smaller the gauge number, the larger the wire

13. Wire Kinds of wire include solid or stranded and copper or aluminum

14. TW Thermoplastic that is water resistant

15. TW TW outdoor is used to provide service in areas that have moisture

17. NM Cable ______ cable is installed inside buildings

18. NM Non metallic sheathed cable (vinyl or plastic)

20. Romex™ Non-metallic sheathed cable commonly called Romex ™ has copper wire covered with paper and vinyl for insulation.

22. UF _____ cable is buried underground as feeder wire

24. Hot Wire Usually black or red

26. Neutral Usually white

27. Ground Wire Usually bare (no insulation) or green

29. BRASS SCREW Black Wire connects to the_______ Screw

30. Silver Screw The white wire is attached to the _________ screw.

32. Green Screw The bare wire is attached to the _______ screw

33. Clockwise The wire should be looped ________ around the screw.

35. Types of Wire Indoor types Outdoor types

36. Indoor Wire T is thermoplastic used for dry locations indoors TW is moisture resistant thermoplastic for indoor dry or wet areas

37. Indoor Wire RHW is rubber and is heat and moisture resistant and is used for large appliances or service entrance in both wet and dry locations

38. Outdoor Wire UF is underground feeder wire used for underground service and can be buried directly in soil, but not in concrete

39. Outdoor Wire USE is unarmored service entrance cables used to bring service into the building

40. Outdoor Wire ASE is armored service entrance used to bring service into a building

41. Conduit Provides mechanical protection for wires and may be flexible or non-flexible and metal or plastic depending on NEC Code requirement

43. Electrical Boxes Outlet, Junction, and Switch Boxes are electrical boxes used anywhere wires are spliced or connected to a switch, light, or receptacle

45. Receptacles Duplex receptacle has places or holes to receive two plugs

47. Receptacles A 15a-240v receptacle has holes to receive one plug

48. Receptacles Dryer and range receptacles are 240v with holes to receive specific shaped plugs

50. Receptacles Porcelain receptacles for lights may have only a place for a bulb or they may include a chain for a switch, or they may also include an outlet for a plug

51. Blank Cover Are used to cover junction boxes

52. Wall Plate Used to cover switch and receptacle boxes

53. Connectors Cable connectors and split bolt connectors are used to fit knockouts in boxes and to connect outside wires to entrance wires

54. Connectors Solderless wire connectors are used to turn wires to make pigtail splices and to insulate the connection or splice in one operation

56. Other Connectors Include ground clamps, screws and clips, entrance elbow and caps or weather heads, and insulators

57. Meter Is used to measure the amount of electricity used

59. Circuit Breaker Is a switching device that automatically opens the circuit when too much current passes through it

61. Fuse Has a strip of metal in it that melts when too much current passes through it

64. Installation Procedures

65. Single Pole Switch Types of single pole switches to install include toggle, rocker arm, push button, and silent depending on use and location

67. Two Terminal A light fixture has two terminals A single pole switch has two terminals

69. Three-way Switch A three way switch has three terminals and uses two traveler wires-one red and one black

71. Four-way Switch A four-way switch has four terminals and can only be installed in between two three-way switches It has four traveler wires

73. Electrical Boxes Electrical or wiring boxes must be installed at every junction, splice, light, switch or outlet

74. NEC Codes Certain NEC codes require wires to be inside conduit Thin conduit may be cut with a hack saw or a metal cutter saw

75. Outdoor Wire Is selected according to use

76. USE USE outdoor is used to provide mechanical protection where wires enter and leave the ground (soil)

77. SE and SEU SE and SEU outdoor are used to bring electrical service into a building

79. Wire Loop The wire loop should be attached to a screw terminal in the same direction the screw turns

80. Rat Tail Splice Is used inside junction boxes

82. Western Union Splice Is used where strength of the splice is required

84. Electric Wiring 6831.17