Download E1 Residential electrical Inspector questions with correct answers| RATED A and more Exams Electrical and Electronics Engineering in PDF only on Docsity!
E1 Residential electrical Inspector questions with
correct answers| RATED A
Electrical devices operating at less than ___ volts and not supplying more than ___ watts of energy shall be exempt from requiring an electrical permit. - ANSWER 25, Section R105.2 Electrical # Who has the authority to give permission to provide temporary power? - ANSWER Building Official Section R107. 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 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. 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. Electrical copper conductors used for feeders and branch circuits shall have a minimum size of ______. - ANSWER No. 14 AWG Section E3406. 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 # 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. A minimum clearance not less than ____ feet shall be provided between the side of a door and an open service conductor without an overall outer jacket. - ANSWER 3 Section E3604. An open service conductor shall have a minimum vertical clearance of no less than ___ feet above a roof that has a 5:12 roof slope. - ANSWER 3 Section E3604.2.1 Exception 2
Section E3608.1.4. 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 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. 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) 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 Branch circuits are permitted to be rated for ___ amps when supplying lighting units or other utilization equipment. - ANSWER Both 15 or 20 Section E3702.
No. 14 copper conductors are permitted to have a maximum overcurrent protection device rating of many amps? - ANSWER 15 amps Table E3705.5. Which of the following is considered to be a standard ampere rating for fuses? 25amps, 55amps, 75amps, 95amps - ANSWER 25amps Section E3705. What is the minimum size a circuit conductor is required to be when a branch circuit having two or more outlets is rated at 20 amps? - ANSWER 12 AWG Table E3702. Fixed utilization equipment shall be supplied with a minimum ___-ampere branch circuit. - ANSWER 30 Section E3702. True or False. An electric space heating and water heating appliance shall be considered as a continuous loads. - ANSWER True Section E3702. Lighting units are permitted to be supplied with either a ___-ampere or ___-ampere branch circuit. - ANSWER 15,
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. Openings in which conductors enter ______ shall be closed in an approved manner. - ANSWER cabinets, panelboards, meter sockets Section E3907. Where cables are protected from physical damage by PVC rigid nonmetallic conduit, it shall be a minimum Schedule ___. - ANSWER 80 Section E3802.3. Cables not sleeved yet exposed to direct sunlight shall be listed and marked as "______". - ANSWER Sunlight Resistant Section E3802.3. When determining the required number of receptacle outlets within a room, floor receptacle outlets cannot be counted unless they are located within ____ inches from the wall. - ANSWER 18 Section E3901.2.
Bathrooms shall have at least one wall receptacle outlet installed within ___ inches of the outside edge of a lavatory basin. - ANSWER 36 Section E3901. 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. 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. Boxes used to support ceiling luminaires shall be capable of supporting a luminaire weight no more than ___ pounds. - ANSWER 50 Section E3905.6. 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. 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
Receptacles located more than ___ feet above the floor are NOT required to be tamper resistant. - ANSWER 5. Section E4002.14 Exception # True or False. Metal faceplates for receptacles are NOT required to be grounded. - ANSWER False Section E4002. 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. Luminaires that weigh more than ___ pounds shall NOT be supported by the screw shell of a lampholder. - ANSWER 6 Section E4004. 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. 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. Appliances and equipment shall be installed in accordance with which of the following? - ANSWER Manufacturer's installation instructions Section E4101. A ___ ampere-rated receptacle outlet servicing heating, air-conditioning and refrigeration equipment must be installed at an accessible location. - ANSWER 15 & 20 Section E3901. 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. 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. At least one receptacle must be located between ___ feet and ___ feet from the inside wall of an indoor spa and hot tub. - ANSWER 6, 10 Section E4203.1.
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. 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 # 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. 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. 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.
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 Section E4001.1 # True or False. When single-throw switches are operated vertically, the up position of the handle shall be in the off position. - ANSWER False Section E4001.3 - On position Machine screws used to attach receptacles to a box shall have ___ threads per inch. - ANSWER 32 Section E4002. True or False. A receptacle is allowed to be installed directly over a bathtub or shower stall. - ANSWER False Section E4002.11 - Shall Not Recessed fluorescent luminaires installed in the wall or ceiling of a clothes closet shall be provided with a minimum clearance of ___ inches between the fixture and the nearest point of a storage space. - ANSWER 6 Section E4003.12 # True or False. Track lighting shall NOT be installed in wet or damp locations. - ANSWER True
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. 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 In general, which of the following colors must the insulation be on ungrounded conductors? (white, gray, green, none of the above) - ANSWER None of the above Section E3407. An overhead service conductor spanning over parking areas subject to truck traffic shall maintain a minimum vertical clearance of ____ feet from final grade. - ANSWER 18 Section E3604.2.2 # Above-ground service entrance cables subject to physical damage shall be protected by a minimum Schedule ___ PVC conduit. - ANSWER 80 Section E3605. Service conductors supplying the entire load of a 400 ampere rated service associated with a one-family dwelling shall have an ampacity of no less than ___ percent of the service rating. - ANSWER 83
Section E3603.1. One and two-family dwellings can only be supplied by ____ service(s). - ANSWER One Section E3601. True or False. Service conductors supplying a building cannot pass through the interior of another building. - ANSWER True Section E3601. Interior metal water piping shall NOT be used as a conductor to interconnect electrodes that are part of the grounding electrode system when located more than ___ feet from the entrance of the building. - ANSWER 5 Section E3608.1.1. True or False. An underground metal gas piping system is allowed to be used as a grounding electrode. - ANSWER False Section E3608. When a plate electrode is considered to be used as a grounding electrode, it shall be installed not less than ___ inches below the earth's surface. - ANSWER 30 Section E3608.1.
The floor area used to calculate the unit load for lighting and general use receptacles of a dwelling unit shall not include which of the following spaces? (Garages, open porches, unfinished spaces, all of the above?) - ANSWER All of the above Section E3704. In general, where more than one calculated branch-circuit or feeder ampacity could apply for a given circuit length, the _____ value(s) shall be used. - ANSWER Lowest Section E3701. No. 10 copper-clad aluminum conductors are permitted to have a maximum overcurrent protection device rating of many amps? - ANSWER 25 amps Table E3705.5. Which of the following is NOT considered to be a standard ampere rating for fuses? (200amps, 225amps, 250amps, 325amps) - ANSWER 325 amperes Section E3705. What is the minimum size a circuit conductor is required to be when a branch circuit having two or more outlets is rated at 30 amps? - ANSWER 10 AWG Table E3702.
Branch circuits that supply luminaires or receptacles for cord-and-plug connected loads up to 1,400 volt-amperes shall a maximum voltage rating limited to ___ volts nominal between conductors. - ANSWER 120 Section E3702. Multioutlet branch circuits serving lighting or receptacles shall be limited to a maximum branch- circuit rating of ___ amperes. - ANSWER 20 Section E3702. Which of the following is NOT considered a standard ampere rating for fuses and inverse time circuit breakers? (12, 25, 70, 75) - ANSWER 75 Section E3705. Overcurrent protection devices for branch-circuits and feeders shall NOT be located at which of the following locations? (clothes closets, bathrooms, over steps, all of the above) - ANSWER All of the above Section E3705. Kitchen countertop receptacles shall be served by a minimum of _____ branch circuit(s). - ANSWER Two 20-ampere-rated Section E3703.
