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Flexible cords are permitted to be run through holes in walls, structural ceilings, suspended or dropped ceilings or floors.
False
The total rating of a cord and plug connected room air conditioner must not exceed _____ of the rating of a branch circuit where lighting outlets, other appliances, or general use receptacles are also supplied.
50%
Except for storable pools, fixed or stationary equipment other than an underwater luminaire cord must not exceed ____ in length.
Receptacles located more than _____ above the floor are not required to be tamper resistant.
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The feeder circuit for a mobile or manufactured home must be rated at not less than ____ at 120/240V.
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Ceiling grid which supports the wires may be permitted to support raceways.
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______ circuit breakers or sets of fuses are acceptable as overcurrent devices to provide overload protection in one-family dwellings.
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At least _____ of free conductor, measured from the point in the box where it emerges from its raceway or cable sheath shall be left at each outlet, junction and switch point.
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Splices and taps must be accessible and must not fill raceway to more than _____ of its cross-sectional area.
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A two-pole circuit breaker or fusible switch shall be considered as _____ overcurrent devices.
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_____ is the maximum approved electrical trade size for PVC conduit.
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A portable generator is required to be grounded if the generator only supplies receptacles mounted on the generator.
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The overhead service conductors above a roof with a slope of at least 4 in 12 in have a minimum clearance of ______.
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A switch or circuit breaker enclosure may be used as a raceway if the conductor fill does not exceed _____ :
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The ground detection sensing equipment must be connected as close as practicable to where the system receives its power supply.
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The coupling means of the Electric Vehicle supply equipment must be stored or located not less than _____ above the floor level.
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Receptacles must be mounted ____ or more above the deck surface of the pier.
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GFCI protection is required for ____, 125V, general purpose receptacles located in dirt confinement areas for livestock.
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Cables listed for information technology equipment can be used to interconnect information technology equipment without the _____ cable length limit.
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Study Notes
Flexible Cords and Equipment
- Flexible cords cannot run through walls, ceilings, or floors.
- The maximum rating for cord-connected air conditioners should not exceed 50% of the branch circuit rating when other outlets are supplied.
Equipment Specifications
- Fixed or stationary equipment, excluding underwater luminaires, must have a cord length of no more than 3 ft.
- Receptacles above 5.5 ft are not required to be tamper-resistant.
Mobile Home Requirements
- Feeder circuits for mobile homes must have a minimum rating of 100 A at 120/240V.
Circuit Breakers and Fuses
- Acceptable numbers for circuit breakers or fuses in single-family dwellings range from 2 to 6.
- A two-pole circuit breaker or fusible switch counts as two overcurrent devices.
Conductor and Raceway Regulations
- Leave a minimum of 6 in of free conductor at each outlet, junction, and switch point.
- Splices and taps must be accessible and not fill raceways beyond 75% of their cross-sectional area.
Conduit Specifications
- The maximum approved electrical trade size for PVC conduit is 6 in.
Portable Generators
- A portable generator does not need to be grounded if it only supplies its own mounted receptacles.
Electrical Clearance and Safety
- Overhead service conductors require a minimum clearance of 3 ft above roofs with a slope of at least 4 in on 12 in.
- A switch or circuit breaker enclosure can function as a raceway if the conductor fill does not exceed 40%.
Ground Detection and Coupling
- Ground detection equipment must connect close to the power supply source.
- Coupling means for Electric Vehicle supply equipment must be located at least 18 in above the floor.
Receptacle Requirements
- Receptacles should be mounted at least 12 in above the deck surface on piers.
- GFCI protection is required for 15 A and 20 A general-purpose receptacles in animal confinement areas.
Cable Regulations
- Information technology equipment cables can interconnect devices without exceeding a cable length limit of 15 ft.
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Description
Test your knowledge of the National Electrical Code (NEC) with our Practice Test 2 flashcards. This quiz covers important regulations regarding flexible cords, air conditioner ratings, and more. Perfect for electricians and students looking to reinforce their understanding of NEC standards.
