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E1 RESIDENTIAL ELECTRICAL INSPECTOR 2026
STUDY GUIDE COMPLETE ELECTRICAL CODE
AND INSPECTION PRACTICE QUESTIONS
โ Who has the authority to give permission to provide temporary power? Answer: Building Official Section R107. โ A ______ conductor is a conductor that is encased within a material or has a thickness NOT recognized by the IRC as electrical insulation. Answer: Covered Definitions Section E3501 - Conductor, Covered โ An approved enclosure shall be used to guard people against accidental contact with energized parts that operate at a minimum of ______ volts. Answer: 50 Section E3404.
โ When splicing, terminating, or connecting a conductor to a fixture or device the minimum length of free conductor required at an outlet, junction box, or switch point shall be at least ____ inches? Answer: 6 Section E3406.11. โ Electrical copper conductors used for feeders and branch circuits shall have a minimum size of ______. Answer: No. 14 AWG Section E3406. โ An overhead service conductor spanning over a driveway shall maintain a minimum vertical clearance of ____ feet from final grade. Answer: 12 Section E3604.2.2 # โ The mounting supports used to support service-entrance cables shall be located within ____ inches of the service head and at intervals no greater than ____ inches. Answer: 12, Section E3605.
โ A ground ring can be used as a grounding electrode if located a minimum ___ inches below the earth and at least ___ feet of bare copper wire no smaller than ___ AWG is used. Answer: 30, 20, 2 Section E3608.1. โ Two grounding rods used in one grounding electrode system must be located at least ___ feet apart. Answer: 6 Section E3608. โ When a rod is used as a grounding electrode, it shall not be less than ___ feet in length. Answer: 8 Section E3608.1. โ When a rod used as a grounding electrode is buried in a trench, what must the minimum depth of the trench be? Answer: 30 Inches Section E3608.1.4. โ A supplemental grounding electrode is not required when the single grounding electrode provided has a resistance of ___ ohms or less to the earth. Answer: 25
Section E3608.4 Exception โ A minimum unit load of ___ volt-amperes shall be used to size feeder conductors for lighting and general use receptacle loads per square foot of floor area. Answer: 3 Section E3704. โ What is the minimum demand load factor in volt-amperes for an electrical clothes dryer circuit when calculating to determine the minimum electrical feeder loads? Answer: 5,000 VA Table E3704.2(1) โ True or False. The calculated load of a feeder shall not be less than the sum of the loads on the supplied branch circuits before any applicable demand factors have been applied. Answer: False Section E3704.5 - After โ Branch circuits are permitted to be rated for ___ amps when supplying lighting units or other utilization equipment. Answer: Both 15 or 20
Section E3702. โ True or False. An electric space heating and water heating appliance shall be considered as a continuous loads. Answer: True Section E3702. โ Lighting units are permitted to be supplied with either a ___- ampere or ___-ampere branch circuit. Answer: 15, Section E3702. โ The ampacity of branch circuit conductors shall not be less than ___ percent of the motors full-load current rating when supplying a single motor. Answer: 125 Section E3702. โ Receptacle outlets located in laundry areas shall be provided with a minimum of _____ branch circuit(s). Answer: One 20-ampere-rated Section E3703.
โ Receptacle outlets supplying bathrooms shall be provided with a minimum of _____ branch circuit(s). Answer: one 20-ampere-rated Section E3703. โ An individual branch circuit rated at ____ amperes or greater is permitted to supply the receptacle outlet for a refrigeration appliance. Answer: 15 Section E3703.2 Exception โ True or False. Cabinets or Panelboards being installed in wet or damp locations are required to be weatherproof. Answer: True Section E3907. โ Cabinets and Panelboards installed in a wall of noncombustible material such as concrete or tile shall be installed to where the front edge of the cabinet is not set back more than ___ inch from the finished surface material. Answer: 1/ Section E3907.
Section E3901. โ Receptacle outlets shall be equipped with ground-fault circuit interrupter protection when located within ___ feet from the outside edge of a sink. Answer: 6 Section E3902. โ Receptacle outlets shall be equipped with ground-fault circuit interrupter protection when located within ___ feet from the outside edge of a bathtub or shower stall. Answer: 6 Section E3902. โ Boxes used to support ceiling luminaires shall be capable of supporting a luminaire weight no more than ___ pounds. Answer: 50 Section E3905.6. โ Boxes used to support ceiling-suspended fans shall be capable of supporting a ceiling fan that weighs no more than ___ pounds. Answer: 70
Section E3905. โ When thread-forming machine screws are used to connect grounding conductors to metal boxes, they shall be engaged not less than ___ thread(s) in the enclosure. Answer: Two Section E3908.15 # โ At no point shall an equipment bonding jumper on the load side of an overcurrent device be smaller than ____ AWG. Answer: No. 14 Section E3908. โ A trash compactor appliance listed to be connected with a flexible cord shall have a minimum cord length of ____ inches and a maximum cord length of ____ inches. Answer: 36, 48 Table E4101. โ An electrical circuit that energizes signaling equipment is known as a _______. Answer: Signaling Circuit Section E4301 - Definitions
โ Cord-suspended luminaires shall not be located within an area measured ___ feet horizontally and ___ feet vertically from the top of a bathtub or shower stall threshold. Answer: 3, 8 Section E4003. โ Luminaires that weigh more than ___ pounds shall NOT be supported by the screw shell of a lampholder. Answer: 6 Section E4004. โ True or False. A branch-circuit overcurrent device is allowed to be used as a disconnecting means for permanently connected appliances rated not over 300 volt-amperes. Answer: True Section E4101.5, Table E4101. โ A flexible cord for a cord-and-plug connected trash compactor must have a minimum cord length of ____ and maximum length of ____ inches. Answer: 36, 48 Section E4101.3, Table E4101.
โ Appliances and equipment shall be installed in accordance with which of the following? Answer: Manufacturer's installation instructions Section E4101. โ A ___ ampere-rated receptacle outlet servicing heating, air- conditioning and refrigeration equipment must be installed at an accessible location. Answer: 15 & 20 Section E3901. โ A receptacle outlet servicing heating, air-conditioning and refrigeration equipment must be located on the same level and within ____ feet from the equipment. Answer: 25 Section E3901. โ Receptacles located within ___ feet from the inside wall of a swimming pool must be protected by a ground-fault circuit- interrupter. Answer: 20 Section E4203.1.
โ True or False. Receptacle outlets are allowed to be installed in a face-up position at kitchen countertops and work surfaces. Answer: False Section E3902. โ How many 14 AWG sized conductors can be installed in a standard square metal box having a dimension of 4 inches X 1-ยฝ inch? Answer: 10 Section E3905.12.1, E3905.12.1.1, Table E3905.12. โ Boxes installed in openings of noncombustible surfaces with a flush-type cover or faceplate shall have no gap greater than ___ inch around the edge of the box. Answer: 1/ Section E3906. โ Non-current-carrying metal parts of fixed equipment supplied by or enclosing conductors likely to become energized must be connected to the equipment grounding conductor when located within ___ feet vertically or ___ horizontally of the earth and where subject to contact by persons. Answer: 8, 5
Section E3908.2 # โ True or False. Grounded Circuit conductors shall NOT be used for grounding noncurrent-carrying metal parts or equipment on the load side of the service disconnecting means. Answer: True Section E3908. โ Flexible cords shall NOT run through which of the following locations? (Holes in a wall, suspended ceilings, dropped floors, all of the above) Answer: All of the above Section E3909. โ Type CL2X limited-use cables are permitted to be installed without a raceway when have a diameter less than ___ inch. Answer: 1/ Section E4303.2. โ General-use snap switches that control motor loads shall not exceed ___ percent of the ampere rating of the switch at its rated voltage. Answer: 80
โ True or False. Track lighting shall NOT be installed in wet or damp locations. Answer: True Section E4005.4 # โ True or False. Ground-fault circuit-interrupter protection is NOT required for fixed outdoor electric deicing and snow-melting equipment. Answer: True Section E4101. โ A flexible cord for a cord-and-plug connected range hood must have a minimum cord length of ____ and maximum length of ____ inches. Answer: 18, 36 Section E4101.3, Table E4101. โ The International Residential Code (IRC) does NOT cover electrical service installations over ____ amperes. Answer: 400 Section E3401.3 #
โ A permit shall become invalid if work is not commenced within ____ days after it is issued. Answer: 180 Section R105. โ A continuous load is a load where the maximum current is expected to continue for ___ hour(s) or more. Answer: 3 Definitions Section E3501 - Continuous Load โ The minimum depth of the working space required to access panelboards and live parts for servicing and maintenance shall not be less than ___ inches. Answer: 36 Section E3405. โ Other than polarized attachment caps, terminal identification is not required for devices that have a normal current rating over ___ amperes. Answer: 30 Section E3407.4.1 Exception
