Which of the following products are not suitable for bonding on the supply side of the service disconnecting means? a) Threaded hubs b) Bonding bushings with jumpers c) Standard locknuts d) Threadless connectors made up tight
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Which of the following products are not suitable for bonding on the supply side of the service disconnecting means? a) Threaded hubs b) Bonding bushings with jumpers c) Standard locknuts d) Threadless connectors made up tight
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- Are double locknuts an acceptable bonding method for Class 1, Division 1 Hazardous locations? If not, list an acceptable method, backing up your answer with a code citation.4 Describe the various methods of laying underground cables. What are the relative advantages anddisadvantages of each method?Liquidtight flexible metal conduit may serve as a grounding means in sizes up to and including _______ in. where used with listed fittings.
- Evaluate the factors that influence the choice of an appropriate cable for a specific connection.List down the different types of Cables.18. You've just completed a large structured cabling installation and notice that in a bundle of cables, thereare a few cables that are neither terminated nor marked for future use. According to the NEC, you shouldA. identify these cables as emergency spares.B. ground each of the cable's conductors.C. twist the ends of all of the cables together.D. remove these cables.
- 18. Which of the following would help avoid the choke effect in grounding electrode conductors?A. Installing a main bonding jumperB. Using an approved polyvinyl chloride conduitC. Applying solder to the connectionD. Using bonding bushes on the ends of the racewaywhat is grading of cables, explain proper in details with block diagram10.a. Which of the following is a condition of the exception that allows the grounded conductor of feeders tobe used for grounding at separate buildings or structures?A. There are common electrically continuous metallic paths between the feeder source and the destination at the structure served.B. There are common electrically continuous nonmetallic paths between the equipment grounding conductor and the destinationat the structure served.C. An equipment grounding conductor isn't included with the supply circuit to the separate structure.D. Ground-fault protection of equipment is provided on the supply side of the feeder.10.b. A service disconnection means must be installed adjacent to, within sight of, and no more than_______ feet from a mobile home.A. 20B. 30C. 10D. 50
- Identify and explain the safety procedures and precautions when working with tools and equipment’s that should be followed during the installation of the cables?analyse the rating of wires/ cables and mcb used for different types of loads17. In an air compressor system, the distribution piping can be bonded using theA. equipment grounding conductor supplying the air compressor's motor.B. grounding electrode driven near the compressor motor.C. grounded neutral conductor.D. equipment grounding conductor at the service entrance. 18. Which of the following would help avoid the choke effect in grounding electrode conductors?A. Installing a main bonding jumper B. Using an approved polyvinyl chloride conduitC. Applying solder to the connection D. Using bonding bushes on the ends of the raceway