Electrical Principles and Wiring Materials

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Across
  1. 1. a device that converts high voltage from high power lines to 230 volts from home and farm insulations.
  2. 5. Electrical wiring, switches and outlets that extend out from service entrance panel.
  3. 7. any tendency of material to prevent electrical flow.
  4. 10. An electrical circuit in which there is at least one place where current cannot flow.
  5. 14. small wires placed with others to form bundles to improve flexibility and conductivity.
  6. 15. A special metal element in a vacuum that produces light when electricity flows through it.
  7. 17. opposite ends of a magnet.
  8. 18. Device that produces alternating electrical current but usually equipped with diodes to change current to direct current.
  9. 19. A device that produces direct current.
  10. 22. A force that attracts or repels iron or steel.
  11. 25. The body's reaction to an electrical current.
  12. 27. the unit of measure for voltage.
  13. 29. making an electrical connection between a piece of equipment and the Earth.
  14. 32. DC current flowing in the opposite direction from straight polarity to reverse the direction of the current.
  15. 33. End of a magnet opposite the south pole.
  16. 35. a high-speed rotary engine driven by water, steam, or any other gases.
  17. 38. loss of voltage as electricity travels through a wire.
  18. 39. conductor with white insulation that carry current from an appliance back to the source
  19. 42. An assembly of electrical wires, connectors, and fasteners used to transmit electricity from a transformer to a service entrance panel.
  20. 44. the use of one watt of electricity for one hour.
  21. 45. material that provides great resistance to the flow of electricity.
  22. 47. magnetic force around an electrical wire or iron core.
  23. 49. the relationship between electric current(I), Electromotive force(E), and resistance (R), E=IR
  24. 50. The action of two magnets that pull together when opposite poles are placed near each other.
  25. 52. the unit of measure for wattage
  26. 53. Flexible metal sheath with individual wires inside
  27. 54. Plug or cartidge containing strip of metal that melts when more than a specified amount of current passes through it.
Down
  1. 2. A condition that occurs when electricity flows back to its source too rapidly and blows fuses, burs wires and drains batteries.
  2. 3. Metal tube with individual insulated wires inside.
  3. 4. The rotating part of a motor, also the iron core portion of magnet.
  4. 6. An electrical source and wires connected to a light, heater, and motor.
  5. 8. a piece of iron or steel that holds its magnetism
  6. 9. Light tube that glows as a result of electricity flowing through gases.
  7. 11. Any material that will permit electrons to move through it.
  8. 12. a round cylindrical piece of metal.
  9. 13. Area around an iron core or electric wire influenced by the presence of magnetism.
  10. 16. A switch that trips and breaks the circuit when more than a specified amount of current passes through it.
  11. 20. Lines of magnetic force that occurs in the patterns between poles of magnet.
  12. 21. Thousandth of an ampere.
  13. 22. A device that measures electricity, gas, or liquid that passes through a system.
  14. 23. A form of energy that can produce light, heat, magnetic force and chemical changes.
  15. 24. conductors with black, red, or blue insulation that carry current to an appliance.
  16. 26. The us of 1000 watts for 1 hour.
  17. 28. Metal drawn out into the form of a thin flexible thread or rod.
  18. 30. Ground circuit interrupter.
  19. 31. Cable composed of copper or aluminum wires covered with paper, rubber, or vinyl for insulation and protection.
  20. 34. one thousand.
  21. 36. drive or force.
  22. 37. The part of a motor that changes the flow of current at appropriate times.
  23. 40. A waterproof conduit connection where an electrical entrance cable is connected to a building.
  24. 41. end of magnet opposite the North pole.
  25. 43. Electrical metallic tubing.
  26. 46. electronic measuring instrument that combines several measurement functions in one unit.
  27. 48. a measure of the resistance of a material to the flow of electrical current.
  28. 51. The unit of measure of amperage.