California General Electrician Exam, Services and Service Equipment: all 51 questions

All questions from the Services and Service Equipment section for California General Electrician Exam, each with the correct answer.

• 2002What is the maximum number of service disconnects permitted for one service?
• 2004A 120/240 volt service drop passes over a roof with a slope of 4 in 12. What is the minimum clearance above the roof permitted by the exception for sloped roofs?
• 2005Overhead service conductors cross a public street that is subject to truck traffic. What is the minimum vertical clearance above the street?
• 2006Overhead service conductors run beside a window that is designed to be opened. What minimum horizontal clearance from the window is required?
• 2007Since the 2020 edition, what is required for all services supplying dwelling units?
• 2008Which statement about overhead service conductors and building openings is correct?
• 2010Under the 2023 and 2026 NEC, a one-family dwelling is supplied by a feeder from a service on a pole. What is required for this dwelling?
• 2012In general, how many services may supply a single building or structure?
• 2014What is the minimum size copper conductor permitted for an overhead service drop, other than for limited loads?
• 2016Where must a service head generally be located in relation to the point of attachment of the service drop?
• 2017What is the minimum width of the working space in front of service equipment?
• 2018Which of the following may not be used to support overhead conductor spans?
• 2019Which types of surge protective device satisfy the dwelling unit service surge protection rule?
• 2020Service-entrance cable run on the outside of a building must be supported within 12 in. of the service head and at intervals not exceeding what distance?
• 2021A commercial service supplies 120 A of continuous load and 40 A of noncontinuous load. What is the minimum ampacity of the service-entrance conductors?
• 2022Under the 2020 and later editions, how must two to six service disconnects for one service be arranged?
• 2023A service supplies a small commercial building, not a dwelling, with more than two branch circuits. What is the minimum service disconnect rating?
• 2024What is the minimum rating of the service disconnecting means for a one-family dwelling?
• 2025Using the 83 percent rule of the 2020 and 2023 NEC, what minimum aluminum XHHW conductor at 75 degrees C is needed for a 200 A, 120/240 volt one-family dwelling service?
• 2026What is the minimum size aluminum conductor permitted for an underground service lateral serving a general load?
• 2027An overhead outside branch circuit spans 60 ft between supports. What is the minimum copper conductor size?
• 2028What is the minimum vertical clearance for overhead service conductors above a residential driveway when the voltage does not exceed 300 volts to ground?
• 2029Where must the service overcurrent device be located relative to the service disconnect?
• 2030What is the maximum ground-fault trip setting permitted for service GFPE?
• 2031Under the 2020 and 2023 NEC, where must the emergency disconnect for a one-family dwelling be installed?
• 2032In a 120/240 volt single-phase dwelling service rated 200 A, the 2020 and 2023 NEC allow the service conductors to be sized at what percentage of the service rating?
• 2033What may be attached to a service mast that supports a service drop?
• 2034Service drop conductors at 120/240 volts pass over only the overhang of a roof to terminate at a through-the-roof service mast. What is the minimum clearance above the overhang?
• 2036What must be done with a service GFPE system when it is first installed?
• 2037What is the minimum height of working space for service equipment rated 1000 volts or less?
• 2038Under the 2023 and 2026 NEC, surge protection at the service is required for dwelling units and also for which of the following?
• 2039Service conductors installed under a building are considered outside the building when they are covered by at least how much concrete?
• 2040How must each service disconnect be identified?
• 2041A detached building is supplied by one feeder. Where must its building disconnecting means be located?
• 2042Where may the service disconnecting means for a commercial building be installed?
• 2044A 480Y/277 volt switchboard faces a concrete wall (Condition 2). What is the minimum depth of the working space?
• 2045Overhead service conductors operating at more than 300 volts to ground pass over a residential driveway. What is the minimum vertical clearance?
• 2046Which edition of the NEC first required an outdoor emergency disconnect for one- and two-family dwelling services?
• 2047Which of the following is permitted to be connected on the supply side of the service disconnecting means?
• 2048Which situation permits an additional service to a building?
• 2049Using the 83 percent rule of the 2020 and 2023 NEC, what minimum copper THWN conductor at 75 degrees C is needed for a 200 A, 120/240 volt one-family dwelling service?
• 2050A service drop cable with a bare messenger operates at 120/240 volts. What is the minimum clearance above a sidewalk accessible only to pedestrians?
• 2051At a supply voltage of 1000 volts or less, additional services are permitted for capacity reasons when the load exceeds what value?
• 2052A service disconnect supplies only two 2-wire branch circuits. What is its minimum rating?
• 2053What is the minimum depth of working space in front of a 120/240 volt panelboard with live parts on one side and no grounded parts on the other (Condition 1)?
• 2056How is the overcurrent protection for each ungrounded service conductor generally sized?
• 2057What is the maximum number of disconnects permitted for a building supplied by one outside feeder?
• 2058What is the minimum height above finished grade for the point of attachment of a service drop to a building?
• 2059Ground-fault protection of equipment is required for a service disconnect rated 1200 A on which system?
• 2061Overhead feeder conductors run from a house to a detached garage at 120/240 volts. What is the minimum clearance above the residential driveway?
• 2062May branch circuit conductors be installed in the same raceway as service-entrance conductors?

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