Electrician's Licensing Exam Questions with Correct Answers

Electrician's Licensing Exam Questions with Correct Answers What kind of information does NEC Section 250-66 cover? - Answer-Covers the sizes of alternating current grounding electrode conductors. NEC Section 250-102 is devoted to equipment _____. - Answer-Equipment Bonding Jumpers Give guidelines for using sheet metal screws as bonding agents. - Answer-Electricians can use sheet metal screws for bonding when those screws are green and have hexagonal heads (NEC 250.8), but it is generally considered unwise. Which NEC article covers service drops? - Answer-NEC Article 230 According to NEC, trees are approved service conductors. (True or False) - Answer-False, NEC does not approve tress as service conductors. When a service entrance wire is under at least 2 in. of concrete, a disconnect is required between meter base and panel. (True or False) - Answer-False, No disconnect is required. Above sidewalks accessible by pedestrians, a service drop not over 600V must be at least _____ft. high. - Answer-10ft. What is the service drop distance, in feet, of a 200-amp service crossing residential property? - Answer-12ft. The required clearance for a 400-amp service drop across a major roadway is? - Answer-18ft. Describe the information covered in NEC Article 230.9 (A) - Answer-Covers clearances on buildings. According to NEC 230.9(A), an unsheathed service conductor must be _____ft. from a window that opens. - Answer-3ft. Which NEC Article covers grounding? - Answer-NEC Article 250 System and circuit grounding involves taking alternating current to ground? (True or False) - Answer-True The process of equipment _____ exposes current-carrying parts to a grounding system. - Answer-Grounding Small power tools are protected in what two ways? - Answer-1.Insulated Housings. 2. Ground prong on plugs.