ICC Residential Electrical Inspector Level 1 (E1) Practice Test

These questions are part of the practice quiz. Start practicing

• What are the maximum distances for securing NM cable near a box and between supports?
• NM cable is not suitable for which locations unless rated and protected?
• How should a panel enclosure be kept accessible during inspection?
• Where should the disconnecting means for a heat pump unit be installed?
• Which of the following is permitted as a method to identify equipment grounding conductors of sizes 4 AWG and larger?
• Tamper-resistant receptacles are designed to prevent what, and where are they required?
• Splices or taps are not permitted in flex cords.
• Which table is used to determine the minimum size copper service conductors for a 200 A service?
• What is the minimum length of free conductor left at each outlet or box where it emerges from the raceway?
• Direct Burial conductors that are spliced must have the splicing means _____ for direct burial.
• Tamper-resistant receptacles are designed to prevent what, and where are they required?
• What is the minimum number of branch circuits required to serve receptacle outlets for small appliances located on the kitchen countertops within a dwelling?
• Where is GFCI protection typically required in a dwelling?
• If circuits are not labeled, what is a recommended practice?
• What is the maximum distance along a kitchen counter wall between receptacles?
• What is the difference between service conductors and branch circuits?
• In general, what should inspectors look for when evaluating a panelboard installation?
• How should conductors be routed and secured in framing to meet inspection standards?
• Raceways shall be ______ between cabinets boxes and outlets.
• The disconnect rating for heating equipment must be not less than what percentage of the total load?
• AFCI protection generally required in dwelling units?
• Which of the following is the correct minimum number of receptacle outlets required on a branch circuit to supply a bathroom receptacle?
• NM cable is commonly used in dry, inside-wall installations because
• What length are the concrete-encased electrode reinforcement bars specified as part of the electrode definition?
• On a 20-amp branch circuit that serves two or more receptacle outlets, which statement is true about receptacle device ratings?
• Labeling aids safe operation and maintenance by:
• What load shall be provided for each 20-amp circuit?
• Lighting track is prohibited in all locations except which one?
• For maintenance tasks, labeling provides:
• If a 20-amp branch circuit feeds multiple receptacles, what is the minimum rating you may use for those receptacle devices?
• Who benefits most from proper labeling?
• In applying the 80 percent rule for continuous loads, what must be ensured?
• A 20-amp branch circuit will be installed to supply two or more receptacle outlets. What is the minimum rating permitted for receptacle devices on the circuit?
• When verifying GFCI protection, what should be checked about downstream outlets?
• What is the minimum amount of lighting outlets required for an attic space with a single entry that will be used for storage?
• Which of the following statements about tamper-resistant receptacles in residential buildings is true?
• What is the minimum clearance for overhead service conductors above a roof with slope 2 in 12?
• What is the purpose of a weatherproof cover on outdoor receptacles?
• The total rating of utilization equipment fastened in place other than luminaires shall not exceed what percentage of the branch circuit rating?
• What information is typically reviewed during a residential electrical plan submission?
• What is considered a concrete-encased electrode?
• The 90°C rating can be used for ampacity adjustments for NM cable provided that the final ampacity does not exceed the ampacity of which temperature rating?
• Unlabeled service equipment increases risk of:
• Non-locking receptacles installed in wet locations must be listed for which type?
• The disconnecting means for stationary motors 2 HP or less and 300 V or less is permitted to be a general-use switch rated at least twice the full-load current according to which NEC sections?
• What is the general purpose of 300.4 in the NEC?
• How close to a box must NM cable be secured?
• Which statement describes a combination device that provides both GFCI and AFCI protection?
• In the box fill calculation, if a box contains three current-carrying conductors, two equipment grounding conductors (count as one), and one internal clamp, how many conductors count toward box fill?
• How does an inspector assess whether an appliance circuit is appropriately dedicated?
• Which NEC section prohibits splices or taps in flex cords?
• Where must the circuit directory for panel boards be located?
• Box fill calculations take into account which of the following items?
• How many receptacle outlets are required on a branch circuit to serve a bathroom receptacle outlet?
• Which wiring method will not be permitted to be used as a raceway to protect service conductors emerging from an underground installation?
• How should a residential electrical system be documented for an inspection?
• For a new single-phase dwelling rated at 200 A with no adjustments, what is the minimum size copper service conductors?
• What is the purpose of a panel schedule in residential electrical documentation?
• Which NEC section provides the rule for the maximum number of service disconnects?
• What characterizes effective labeling?
• For a 20-amp branch circuit that serves two or more receptacle outlets, which rating is the minimum allowed for receptacle devices?
• Which of the following is a direct benefit of proper labeling?
• What rating is essential for lighting fixtures installed in damp locations?
• Which wiring method is permitted to protect NM cable when passing through a floor?
• In box fill calculations, how are equipment grounding conductors counted?
• What is the purpose of bonding metal water piping to the grounding system?
• Fundamental purpose of labeling for safety is to:
• An inspector locates a single-gang receptacle box with one internal clamp, one 12 AWG NM cable with ground, and one receptacle. What is the total calculated free space for this installation?
• Label information should typically include:
• How does the inspector verify proper grounding at a dwelling?
• What is the maximum length for a built-in dishwasher?
• How should NM cable be protected where it passes through studs or framing members?
• What is the minimum number of branch circuits required to serve receptacle outlets in a detached garage with electric power?
• Which conductor is run with a feeder as the grounded conductor?
• NM cable running parallel with stud framing shall be installed not less than __________ from the edge of studs unless physically protected.
• In a feeder arrangement, what is the role of the grounded conductor?
• In a bathroom, how many receptacle outlets are required to be provided on the branch circuit?
• What is the purpose of GFCI protection in damp or wet areas?
• Which is the minimum number of 20-amp branch circuits for laundry receptacles?
• How are dwelling unit loads typically calculated for a service-sizing decision?
• What type of outdoor enclosure is permitted for hose-down applications?
• The disconnecting means for heating equipment shall have an amp rating not less than what percent of the total load?
• Which conductor is permitted to run with feeder conductors?
• The grounded service-supplied alternating current system shall have an ______ main bonding jumper used to connect EGC to the grounded conductor.
• What is the recommended practice for securing conductors that enter cabinets or boxes?
• Name common grounding electrodes used in homes.
• What is box fill and why is it important for inspections?
• A permanently installed pool is considered to be in the ground if its water depth is greater than how many inches?
• For kitchen countertop receptacles, the minimum number of 20-amp branch circuits required is:
• Which factors determine the box fill in a box containing multiple conductors and devices?
• What is the maximum aluminum conductor size referenced for feeders and branch circuits in the material?
• True statement about labeling:
• What is a common inspection issue with old wiring methods?
• Why must neutrals be isolated from grounds at subpanels?
• In box fill calculations, how are internal clamps treated?
• The maximum length for a built-in dishwasher is specified in NEC clause 422.16(B)(2). Which statement reflects that limit?
• Panel schedules primarily provide which details?
• What is a key reason to bond neutral and ground at the service equipment?
• Appliances must be protected against overcurrent in accordance with the rating of the appliance and its listing. This requirement is specified by which NEC clause?
• Which NEC section governs the main bonding jumper requirement between the grounding electrode conductors and the grounded conductor?
• Which item counts toward NEC box-fill as a clamp when inside a box?
• Which of the following best describes 'overcurrent protection'?
• When inspecting service equipment, labeling allows you to:
• For circuits with conductors rated at 75°C, the termination provisions of equipment must be used for conductors up to which size?
• Which conductor size is specified for the equipment grounding conductor of a 70-amp circuit?
• In a subpanel, what is the recommended approach regarding the bonding jumper between neutral and ground bars?
• For a 20-amp branch circuit supplying two or more receptacles, which option lists the minimum rating for receptacle devices?
• Three fixed appliances: Dishwasher 1800 VA, Water heater 6000 VA, Room C 1600 VA. What is the minimum calculated demand load for all appliances?
• What is the difference between a bonding jumper and a grounding electrode conductor?
• Why is it important to confirm that the neutral and ground are correctly bonded at the service equipment?
• What factors determine conductor insulation rating suitability in a residential installation?
• What is the general safety rationale behind requiring GFCI and AFCI protections?
• What is the purpose of AFCI protection in terms of fire prevention?
• In the appliance demand calculation example, what percentage factor is applied to the sum of appliance ratings?
• Which statement describes bonding metal parts to maintain equipotential?
• What does WR indicate when labeling receptacles used in wet locations?
• Labeling should comply with:
• What is true about the difference between a main-lug panel and a main breaker panel?
• What is the purpose of the main service disconnect?
• What is the proper approach to verify GFCI function during an inspection?
• Tamper-resistant receptacles are required in which installations?
• Ranges with rating of 8.75 kVA or more require a minimum branch circuit of what ampere rating?
• What does the 6-foot receptacle spacing rule mean for wall outlets?
• Which of the following best describes the minimum receptacle device rating on a 20-amp branch circuit serving multiple receptacles?
• For a cooking range rated at 8.75 kVA or more, what is the minimum branch-circuit rating?
• In an attic space that does not have permanent stairs or a ladder, protection for feeder cables running across the face of the rafters is required within how many feet of the attic entrance?
• Which practice is recommended for securing conductors entering cabinets or boxes to maintain box fill and strain relief?
• An intersystem bonding termination device mounted at the service disconnect means for a building is required to be connected to the grounding electrode conductors by what size conductor?
• Which statement best describes the attic lighting requirement for storage spaces with a single entry?
• How should outdoor or detached structures be wired from the main building?
• What is the maximum permitted number of separated service disconnects consisting of fusible switches that are grouped together?
• Which feature is required for outdoor receptacles to reduce weather-related hazards?
• What is the sum, in VA, of the three fixed appliances in the example: Dishwasher 1800 VA, Water heater 6000 VA, Room C 1600 VA?
• What load (in VA) must be provided for each 20-amp circuit serving receptacles in a laundry area?
• How should a dwelling’s electrical system be inspected for proper tamper-resistant receptacle usage?
• What is a primary reason proper labeling on service equipment is important?
• A nonmetallic-sheathed feeder cable emerges from a wall in a garage and will be exposed to physical damage. Which protection method provides protection from physical damage?
• The conductors and the equipment required or permitted by this code shall be acceptable only if they are what?
• Outlets used to charge electric vehicles must be supplied by what type of branch circuit?
• To supply receptacle outlets in a detached garage, which option lists the minimum number of branch circuits required?
• A 240 V branch circuit rated at 30 A is used for a cord-and-plug connected appliance and must not exceed 80% of the branch circuit rating. What is the maximum load in VA?
• What is the maximum size of aluminum conductors permitted for feeders and branch circuits?
• Which statement about outdoor receptacles is correct?
• What size equipment grounding conductor is required for a 70-amp circuit?
• What is the demand load for a clothes dryer with a nameplate rating of 4,750 VA?
• What is the maximum rating (as a percentage of the branch circuit rating) of any one cord-and-plug connected utilization equipment on a 15-amp branch circuit?
• In a raceway with feeder supply conductors protected by 125-amp fuses, what size aluminum EGC is required?
• Which statement is true about the minimum number of branch circuits needed for receptacle outlets in a detached garage with electric power?
• In damp locations, what is required for lighting fixtures during an inspection?
• For stationary motors rated at 2 HP or less and 300 volts or less, which type of disconnecting means is permitted?
• What is the correct treatment of neutrals and grounds in a subpanel?
• How are listed and labeled electrical products defined?
• For a bathroom receptacle circuit, how many receptacle outlets are required?
• A branch circuit rated at 20 amps supplies more than 2 duplex receptacles. What is the minimum rated duplex receptacle permitted to be connected to this circuit?
• What is the function of the grounding electrode conductor?
• What is the purpose of a disconnecting means located at the service equipment?
• When an NM exposed cable passes through a floor, the cable is permitted to be protected by which wiring method?
• What is the minimum size copper equipment grounding conductor for an 80-amp branch circuit?
• Which outdoor enclosure rating is specified for hose-down applications?
• Utilization equipment on branch circuits (other than luminaires) shall not exceed what percentage of the branch circuit rating?
• What is the minimum copper size for a lighting circuit fed by a 15-amp breaker when there are multiple outlets?
• Where is the service disconnecting means permitted to be located?
• Which of the following is a permitted method of ensuring continuity when bonding metallic service raceways to metal service equipment?
• AFCI protection is required for branch circuits supplying 120-volt single-phase 15- and 20-amp loads in which location?
• Which protection method is used for NM cable located where it could be damaged, such as in a garage?
• Which NEC articles govern dwelling unit branch circuits and overcurrent protection?
• Which load value is associated with a 20-amp circuit in NEC 220.52(A) examples?
• What type of protection shall be provided for fixed outdoor electric deicing and snow-melting equipment?
• In a residential system, which statement best distinguishes grounding from bonding?
• Proper labeling helps prevent which safety risk?
• On a 20-amp branch circuit feeding two or more receptacle outlets, which option lists the minimum rating for the receptacle devices?
• What unit is used to express NEC box fill volumes?
• What is the function of a grounding electrode system on a residence?
• How do inspectors check for proper conductor insulation rating in a residential installation?
• In NEC box-fill calculations, what is the approximate volume assigned to a single 12 AWG conductor?
• For a permanently installed pool, where must a receptacle on a general-purpose branch circuit be located relative to the pool?
• Which protection is required for fixed outdoor electric deicing equipment and snow-melting equipment?
• What is the primary purpose of the NEC in residential electrical inspections?
• A motor load not exceeding what percent of the amp rating of the snap switch at its rated voltage is permitted to be controlled to this load?
• What is the minimum copper conductor size permitted for lighting circuits having more than two outlets protected by a 15-amp breaker?
• What is the role of plan review in the residential inspection process?
• AFCI exemptions are allowed for which of the following in dwelling units?
• What is the minimum number of 20-amp branch circuits required to serve receptacle outlets located in the laundry area of a dwelling?
• GFCI protection is not typically required in which location?
• What is the inspector’s role regarding permit compliance and recordkeeping?
• Which NEC section specifically addresses the circuit directory location in panel boards?
• Electric vehicle charging outlets shall be supplied by which type of branch circuit?
• What defines tamper-resistant receptacles?
• To supply receptacle outlets in a detached garage, what is the minimum number of branch circuits required?
• How do inspectors evaluate whether a dwelling’s circuits meet the 80% rule for continuous loads?
• What type of location must interiors of underground raceways be considered when installing conductors within locations?
• What ampacity is specified for the branch circuit serving laundry receptacles?
• Labeling on service equipment helps installers by:
• What is the maximum percent of unbalance load allowed for a feeder neutral with ungrounded feeder conductors in ranges, wall ovens, cooktops, and a clothes dryer?
• Which installation method is acceptable for routing conductors to meet inspection standards?