Hello, my name is Greg.
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1. If you measure 20 feet between an existing box and a new box location, you should cut a piece of cable with a length of approximatelyB. 25 to 26 ft.2. When a device is removed from an outlet box, the _______ wire must be connected in such a way that maintains continuity.B. grounding3. To correctly saw a lath and plaster wall, point the teeth of the sawD. toward you and cut on the pulling stroke.4. The labor performed when you extend an existing electrical system is calledA. old work.5. The basement in an existing building has concrete walls, a concrete floor, and a concrete ceiling. From this information, you know that receptacles, lamp fixtures, and switchesC. can be installed in the basement and circuit wiring enclosed in a surface raceway system.6. Which of the following tests must be performed on a de-energized circuit?B. Continuity test7. Each outside receptacle must be protected byA. a GFCI.8. A circuit consists of five unequal loads connected in parallel. To measure the resistance through one specific load, you mustD. remove power from the circuit, disconnect the load from the circuit, and measure the load's resistance.9. When new work is being performed, an outlet box must have a minimum depth ofB. 1 1/2 in.10. When new outlets are being added to the first floor of a two-story house with an unfinished basement, the easiest route for running cable is usuallyD. by way of the basement.11. When an aluminum conductor is installed on a screw terminal, the screw should be tightened to a torque ofB. 12 lb-in.12. A fixed electric space heater that draws a maximum current of _______ must be supplied by a cable with an ampacity of30 A.B. 24 A13. If a fixed appliance has an automatically started motor and is supplied by an individual branch circuit, the protection recommended is equal to or less thanB. 125 percent of the appliance rated current.14. Which of the following is a true statement about the planning stages of adding a receptacle to an existing electrical system?A. You must ensure that the existing circuit breaker will have enough capacity to handle the expected load to be applied at the new receptacle.15. When installing cable behind a wall, it's recommended to run the cable behind the baseboard rather than through the studs when theD. wall is plaster or lath.16. A device box with supports is the best choice when installing aA. device box mounted in an existing drywall-covered wall.17. A transformer that's used with a doorbell has a fixed output ofB. 10 V.18. A suitable disconnecting means for a fixed appliance is aC. circuit breaker.19. The most efficient way to troubleshoot a defective electrical circuit is to start byC. breaking down a multiple-circuit system into isolated circuits to be evaluated one at a time.20. After routing cable from an existing device box through a wall and pulling the cable into a new box, your next step is toD. tighten the internal cable clamps in the new box
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