IEC Year 3 Exam Study & Practice Questions With Verified Correct Answers | Updated

IEC Year 3 Exam Study & Practice Questions With Verified Correct Answers | Updated A 120/240-volt, 1Ø, 3-wire branch circuit is installed underground (in PVC with an EGC) to serve receptacles and lighting in a separate building. Is a ground rod or similar grounding electrode required at the separate building? Select one: a.Yes b.No - ANSWER : b. no A service is installed in building A. Building B contains a 3Ø motor as well as lights and a receptacle. From building A, a 4-wire feeder is pulled to a sub-panel in building B. This feeder is installed underground in one PVC conduit. You must install ___.I. an EGC with the circuitII. a grounding electrode at the 2nd building Select one: a.I only b.II only I & II er I nor II - ANSWER : c. both I & II An acceptable method for grounding a 120/208-V, 3Ø, 4-wire electrical system at a separate building or structure is to connect ___ conductor to the grounding electrode. I. the grounded II. the grounding III. an ungrounded Select one: a.II only b.I only c.I or II only d.III only e.II & III only - ANSWER : a. II only A 120/208-volt, 4-wire, three-phase feeder supplies power from one building to a second building. At the second building, the neutral and equipment grounding conductors are required to be ___. Select one: separated, and the equipment grounding conductor is required to be connected to a grounding electrode d together, and not required to be connected to a grounding electrode separated, and grounding either conductor is optional separated, and the neutral is required to be connected to a grounding electrode cted to a grounding electrode - ANSWER : a. kept separated, and the equipment grounding conductor is required to be connected to a grounding electrode A 120/240-volt, 1-ph, 3-wire feeder is to be installed underground in Schedule 40 PVC to feed a main breaker panelboard that is located in another building. How should the neutral and EGC be connected in the panel at second building? The panel at the second building has an insulated neutral bar and a ground bar that is bonded to the metal panel can (enclosure). A GEC has also been installed from the ground bar to the grounding electrode.I. Connect the neutral to the neutral bar and the EGC to the ground bar.II. Use a main bonding jumper to connect the neutral bar to the ground bar. Select one: a.I only b.II only I & II er I nor II - ANSWER : a. I only