ICC Residential Electrical 2021 Study Questions E1
Installation requirements: NM shall not be less than ____ from the edge of the framing member and protected by a _____ plate or sleeve.
1 -1/4 inch 0.0625 inch Table 3802.1
Branch circuits serving motor operated and combination loads, the total calculated load shall be based on:
125% of the largest motor load plus the sum of the other loads. E3702.7
Branch circuit requirement table For a 15 amp circuit must have a minimum conductor size of:
14 Table E3702.14
Minimum size of conductors E3406
14 AWG copper and 12 AWG aluminum or copper clad aluminum.
In calculating box fill each No. 12 AWG conductor shall require ___ cubic inches free space within the box
2.25 E3905.12.2.1
Bathtub and shower space shall not have receptacles installed within a zone measured _______ feet horizontally and ________ feet vertically
3 and 8 E4002.11
Pools and flexible cords-the flexible cord shall not exceed ________ and shall have an equipment grounding conductor not smaller than ____ AWG
3 feet and 12 AWG E4202.3
Open conductors and multiconductor cables without an overall outer jacket shall have a clearance of not less than
3 feet from the sides of doors, porches, decks, stairs, ladders, fire escapes, balconies, and openable windows E3604.1
At least one receptacle outlet shall be installed in bathrooms within _____ of the outside edge of each lavatory basin.
36 inches E3901.6
Working clearances E3405
36 inches deep, 30 inches wide, and floor to 6.5 feet with minimum 90 degree opening doors
Interior metal piping shall be bonded not more than
5 feet from the point of entry into the building E3611.4 Reasonable thought: further in and the piping could've been exchanged for plastic piping such as PEX
Ceiling outlets must be capable of supporting a luminaire weighing up to:
50 lbs E3905.6.2
A luminaire that weights more than ____ pounds or exceeds 16 inches in any dimension shall not be supported by the screw shell of a lamp holder
6 pounds E4004.4
Electric pool water heaters must be protected at not more than _____
60 amps E4206.12
Maximum flexible cord length for a dishwasher _____ Minimum flexible cord length for a trash compactor___
78 36 Table E4101.3
A rating of any one cord and plug connected 30 amp rated utilization equipment shall not exceed:
80% of the branch circuit ampere rating E3702.4
Conductors in NM cable assemblies shall be rated at ___degrees Celsius
90 E3705.4
Luminaire supports:
A luminaire that weighs more than six pounds or exceeds 16 inches in any direction shall not be supported by the screw shell of a lampholder E4004.4
Where up to four equipment grounding conductors enter a box, the volume allowance is:
A single volume allowance E3905.12.2.5
Festoon Lighting NEC 225.6
A sting of outdoor lights that are suspended between 2 points. Shall not be smaller than 12 AWG unless the conductors are supported by messenger wires and across spans not more than 40 feet without messenger wires.
Unused openings in cabinets and panelboards shall be effectively ___ to afford protection equivalent to that of the wall of the cabinet
Closed. Meaning knockouts must be filled and or/covered. E3906.4
Residential Electrical Limitations E3401.3
Does not cover Installations, including associated lighting, under the exclusive control of communications utilities and electric utilities, or services over 400 amperes.
Allowable Wiring Methods-Approved Abbreviations ENT
Electrical nonmetallic tubing Table E3801.2
Integrity of electrical equipment E3404.7
Internal parts of electrical equipment, including busbars, wiring terminals, insulators, and other surfaces shall not be damaged or contaminated by foreign materials such as PAINT, plaster, cleaners, abrasives, and corrosive residues.
Residential Electrical Scope E3401.2
Limited to 120/240 volt, 0-400 ampere, single phase systems in one and two family dwellings and accessory structures.
Overcurrent Protection Rating Table Size 10 AWG
Max overcurrent protection device rating in Amps is 30 Table E3705.3
Where there is no existing grounding electrode, the grounding electrode required in E3608 shall be installed if more than one branch circuit which is:
Metal Underground Water Pipe Interior Metal Water Pipe Concrete Encased Electrode Ground Rings Rod, Pipe, and Plate Electrodes Bonding Jumper E3608
3 VA per square foot for general lighting. Add 1500 for each of the 2 required small appliance circuits and another 1500 for the laundry circuit = (4,500)
Minimum Service Load Calculation Table E3602.2
Grounded Conductor Identification E3407
Neutrals: continuous white or gray outer finish or three continuous white or gray stripes along it or at terminations, on any other sheathing color except green insulation.
Above roof vertical clearance:
Not less than 8 feet with 5 exceptions, 2 of which include roof slope E3604.2.1
How many circuits are required in a bathroom?
One 20 amp branch circuit E3703.4
Which wiring method may not be used inside a building?
USE underground service cable Table E3801.4
Allowable Wiring Methods-Approved Abbreviations USE
Underground service cable Table E3801.2
Nonmetallic conduit of the 8 AWG insulated copper in the forming shell must be covered with:
a listed potting compound to protect the connection from the possible deteriorating effect of pool water. E4205.3
A flexible dishwasher cord shall be protected:
against damage by a bushing, grommet, or other approved means. E4103.3
Grounding Electrode Systems Do Not Include:
aluminum electrodes metal underground gas piping system pool, spa, and hot tub structures and rebar E3608.5-7
Tightening torque values E3406.12
are provided by the manufacturer to be achieved by approved means (torque wrench, torque screwdriver) indicated in inch pounds.
Box fill
clamps must be counted as a single volume allowance of conductors Locknuts and bushings do not require an allowance. E3905.12.2.2 E3905.12.2
Methods not permitted for connections E3406.14.2
connection devices or fittings that depend soley on solder shall not be used.
Location of overcurrent devices on premises may not be located:
in bathrooms, clothes closets, or over the stairway E3705.7
Ceiling-supported paddle fans shall be supported _____ of the outlet box
independently E4101.6
Screw-shell type shall be installed for use as _____ only
lampholders E4003.4
Physical interconnection of smoke alarms is not required where ___ ___ alarms are installed
listed wireless R314.4
Storeable cord and plug connected pools and their filter pumps must be provided with a gfci that is:
located in the power supply cord within 12 inches of the attachment plug or is an integral part of the attachment plug. E4207.1
Pool feeders installed in corrosive environments shall contain an insulated copper equipment grounding conductor sized in accordance with Table E3908.12, but not:
smaller than 12 AWG E4205.3
Underground service laterals that are not encased in concrete and that are buried 18 inches or more below grade shall have their location identified by a ________________ _____________.
warning ribbon E3803.2
A kitchen must have how many circuits?
Two 20 amp branch circuits E3703.2
Residential Electric Clothes Dryer Feeder Load
5,000 VA (Volt amperes) for each dryer circuit or the nameplate rating load of each dryer, whichever is greater. Table E3704.2
There shall be a wall switch at each floor to control stairway lighting where the stairway has ______ or more risers.
6 E3903.3
When the supplemental electrode is rod, pipe, or plate, the bonding jumper connected shall not be required to be larger than
6 AWG copper or 4 AWG aluminum E3608.1.1.1
Photoelectric smoke alarms shall not be installed less than ____feet horizontally from a permanently installed cooking appliance
6 feet R314.3.1
Appliance receptacle outlets shall be installed within
6 feet of the intended location of the appliance E3901.5
Ungrounded service conductors for accessory buildings and structures shall not have an ampacity of less than:
60 amperes and shall be sized as required for feeders in Chapter 37 with 2 exceptions E3603.2
Required receptacle outlet locations include:
On or above the countertop or work surface, not more than 20 inches above. Not more than 12 inches below the countertop or work surface. E3901.4.3
For new construction, an approved carbon monoxide alarm shall be installed in what locations
Outside of each separate sleeping area in the vicinity of the bedrooms and each floor if there is a garage or fuel fired appliances. R315.3
Constructed or protected so that exposure to a beating rain will not result in the entrance of water under specified test consitions
Raintight: Definitions Chapter 35 and mentioned under Table E3404.4
Above-ground service-entrance cables subject to physical damage shall be protected by Schedule ___ PVC conduit
Schedule 80 or rigid metal conduit, intermediate conduit, electrical metallic tubing, or other approved means. E3605.5
When installed or attached to a structure and it is capable of becoming energized, all metal piping:
Shall be bonded E3609.7
Terminals for more than one conductor and terminals for connecting aluminum conductors:
Shall be identified for the application E3406.10
CO/ALR snap switches
Shall be marked when connected directly to aluminum conductors. E4001.2
Where permitted, flexible cords and cables:
Shall not be installed as a substiture for the fixed wiring of a structure and shall not be run through holes in ceilings, floors, or walls. E3909.1
Panelboards and Service Equipment Locations 3405.5
Shall not be located in bathrooms, toilet rooms, clothes closets, or over the steps of a stairway.
Grounded conductors size
Shall not be smaller than the size of the minimum grounding electrode conductor size in the Table E3603.4 E3603.1.4
A single rod, pipe, or plate grounding electrode is sufficient with a resistance to earth of 25 ohms or less, so a :
Supplemental electrode will not be required E3608.4
Allowable Ampacity Table for different types of wire described Temperature Correction Factors for Ampacity
Table E3705.1 and Table 3705.2
Flexible Cord Type SJO
Table E3909.2 guides cord size and max amps
Recessed incandescent fixtures shall have ____ protection
Thermal protection with two exceptions E4003.5
Vertically mounted luminaire or lampholder weighting not more than 6 pounds is an exception and shall be permitted:
To be supported on other boxes provided the yoke is secured E3905.6.1
Nonmetallic boxes shall be used only with cable wiring methods with entirely nonmetallic-sheaths, flexible cords and nonmetallic raceways.
True/Accurate E3905.3
Length of conductor for splice or termination 3406.11.3
minimum 6 inches of free conductor or 3 inches outside of each opening.
Single receptacle installed on an individual branch circuit shall not have a rating less than that:
of the branch circuit E4002.1.1
Separately installed pressure connectors shall be used:
with the conductors at the ampacities and temperature rating listed and identified.
Thermostats marked with an off position are designed so that the circuit cannot be energized and are located:
within sight of the equipment being controlled and is an allowable disconnecting means. Table 4105.5
