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- Wire sizing indicates the diameter of the metal conductor of the wire and is based on the American Wire Gauge (AWG) system. The gauge of a wire relates to the wire's current-carrying capacity, or how much ___ the wire can safely handle.How and where is the grounding electrode conductor attached to the water pipe?2. Imagine that you're asked to install an auxiliary grounding electrode at the base of a lighting pole in aparking lot. This auxiliary grounding electrode will be connected to theA. lighting pole's electrical service equipment grounding conductor.B. electrical service's grounding electrode conductor.C. next lighting pole's auxiliary grounding electrode.D. lighting pole's neutral conductor.
- To testing installation of grounds, the usual procedure is to connect one lead of the megohmmeter to one of the conductors, then the other lead is___. A, connected to another conductor b, connected to the conduit or raceway c. Connected to a special grounding electrode on the megohmmeter d. Left unconnecteda.2. Which of the following statements about grounding electrode conductors is true?A. They restrict the ground connection.B. They eliminate potential differences between conductive objects and the Earth electrode.C. They facilitate operation of overcurrent protective devices.D. They perform bonding between the Earth and grounded conductors.a.3. Main bonding jumpers are required to be made of _______ or other corrosion-resistant material.A. brassB. aluminumC. copperD. copper-clad aluminumList the minimum trade size of Type EMT for each of the following applications. Assume the use of conductors with THHN insulation. Six 14 AWG ______ Six 12 AWG ______ Three 10 AWG ______ Four 8 AWG ______
- QUESTION 9 When a ground wire is connected to an interior gas piping system and the underground portion of the gas pipe into the building is plastic, which of the following is (or are) true? a A.This would be approved by code as the gas pipe is only being bonded to the electrical system. b B.This installation would be approved by code, as the gas pipe is not a grounding electrode. c C.Both A and B d D.Neither A nor BWhich of the following statements about equipment grounding conductors (EGCs) is true?A. The National Electrical Code permits the EGC to also perform as a grounding electrode conductor.B. More than one EGC must be used if multiple circuits are installed in a single raceway, cable, or cable tray.C. No current should be present in the EGC during normal operation.D. EGCs are required to be decreased in size to address voltage drop.17. 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
- what section of the code prohibits supporting telephone wires from raceways that contain light or power conductors.1.a. Section 300.15(C) requires a fitting to be installed on each end of a conduit or tubing being used toprovide support or protection to protect the cable fromA. hazardous vapors.B. direct sunlight.C. abrasion.D. extreme heat or cold.1.b. Typically, a/an _______ is a better electrode than a ground rod because it provides a greater surface areafrom which the electrons can be dissipated.A. continuous grounding conductorB. clamp-on ground resistance meterC. rebarD. OCPDTable 314.16(A) of the Code shows the maximum number of conductors permitted in a given size box. In addition to counting the number of conductors that will be in the box, what is the additional volume that must be provided for one or more internal cable clamps?