ET 1 Module 2 Crossword

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Across
  1. 2. The amount of thermal energy impressed on a surface at a certain distance from the source of an electrical arc. Incident energy is typically expressed in calories per square centimeter (cal/cm2).
  2. 8. An approach limit at a distance from an exposed energized electrical conductor or circuit part within which there is an increased likelihood of electric shock.
  3. 9. Very rapid irregular contractions of the muscle fibers of the heart that result in the muscle being unable to contract and pump blood properly.
  4. 10. A person who is not a qualified person.
  5. 12. An electrical tool with a three-prong plug at the end of its power cord or some other means to ensure that stray current travels to ground without passing through the body of the user. The ground plug is bonded to the conductive frame of the tool.
  6. 13. (AFB) An approach limit at a distance from exposed energized electrical conductors or circuit parts within which a person could receive a second-degree burn if an electrical arc flash were to occur.
  7. 14. fault circuit interrupter (GFCI) A protective device that functions to de-energize a circuit or portion thereof within an established period of time when a current to ground exceeds some predetermined value. This value is less than that required to operate the overcurrent protective device of the supply circuit.
  8. 15. The maximum incident energy resistance demonstrated by a material (or a layered system of materials) prior to material breakdown, or at the onset of a second-degree skin burn. Expressed in joules/cm2 or calories/cm2.
Down
  1. 1. An approach limit at a distance from an exposed energized electrical conductor or circuit part within which a shock hazard exists.
  2. 3. tools Electrical tools that are constructed so that the case is insulated from electrical energy. The case is made of a nonconductive material.
  3. 4. A study investigating a worker’s potential exposure to arc flash energy, conducted for the purpose of injury prevention and the determination of safe work practices and appropriate levels of PPE.
  4. 5. Toxic chemicals that may be contained in liquids used to cool certain types of large transformers and capacitors.
  5. 6. stick An insulated tool designed for the manual operation of disconnecting switches, fuse removal and insertion, and the application and removal of temporary grounds.
  6. 7. One who has demonstrated the skills and knowledge related to the construction and operation of the electrical equipment and installations and has received safety training to identify and avoid the hazards involved.
  7. 11. Situations that put a worker at risk due to the demands of the task, conditions, worker attitude, and/or environment.