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1 / 60
Under 200.6(C), an insulated conductor intended for use as a grounded conductor (the neutral) within a flexible cord shall be identified by:
200.6(C) requires an insulated conductor intended for use as a grounded conductor within a flexible cord to be identified by a white or gray outer finish or by methods permitted by 400.22.
Source: CEC 200.6
2 / 60
At kitchen countertops, no point along the counter wall line may be more than ___ from a receptacle:
No point along a countertop wall space may be more than 24 in from a receptacle.
Source: CEC 210.52(C)(1)
3 / 60
Under 210.8(A)(5), GFCI protection for dwelling receptacles applies to which part of a basement?
Item (5) of the dwelling-unit GFCI list in 210.8(A) reads simply 'Basements', with no limit to finished or unfinished areas.
Source: CEC 210.8(A)(5)
4 / 60
[20A kitchen SA circuit, NM to boxes, EMT in garage] For horizontal runs of the Type NM nonmetallic-sheathed cable through bored studs to count as supported and secured under 334.30(A), the cable must be fastened within ___ of each box:
Under 334.30(A), horizontal runs through holes and notches are considered supported and secured where the nonmetallic-sheathed cable is securely fastened by an approved means within 300 mm (12 in.) of each box, cabinet, conduit body, or other cable termination.
Source: CEC 334.30
5 / 60
Under the small-conductor rule of 240.4(D), the overcurrent protection for this 12 AWG copper circuit is limited to:
240.4(D)(6) lists 20 amperes for 12 AWG copper.
Source: CEC 240.4(D)(5)
6 / 60
The working-space clearances of 110.26 exist primarily to:
110.26 requires working space, and access to and egress from working space, to be provided and maintained about all electrical equipment to permit ready and safe operation and maintenance of such equipment.
Source: CEC 110.26
7 / 60
Where the voltage between service conductors does not exceed 300 and the roof area is guarded or isolated, 230.24 permits the clearance above the roof to be reduced to:
230.24, Exception No. 5: where the voltage between conductors does not exceed 300 and the roof area is guarded or isolated, a reduction in clearance to 900 mm (3 ft) is permitted.
Source: CEC 230.24
8 / 60
Where the NM passes through a bored stud hole and the required edge distance cannot be maintained, 300.4(A)(1) requires it to be protected by:
300.4(A)(1) says that where the bored-hole distance cannot be maintained, the cable or raceway shall be protected from penetration by screws or nails by a steel plate.
Source: CEC 300.4(A)(1)
9 / 60
Which scope section opens the CEC article that covers rigid polyvinyl chloride conduit (PVC)?
352.1 Scope: this article covers the use, installation, and construction specifications for rigid polyvinyl chloride conduit (PVC) and associated fittings.
Source: CEC Article 352
10 / 60
For a horizontal run of Type NM nonmetallic-sheathed cable through holes in framing to count as supported and secured under 334.30(A), the cable must be securely fastened within what distance of each box, cabinet, or other termination?
Under 334.30(A), horizontal runs through holes and notches are considered supported and secured where the nonmetallic-sheathed cable is securely fastened by an approved means within 300 mm (12 in.) of each box, cabinet, conduit body, or other cable termination.
Source: CEC 334.30
11 / 60
Under 300.4, a conduit bushing constructed wholly of insulating material:
300.4: conduit bushings constructed wholly of insulating material shall not be used to secure a fitting or raceway.
Source: CEC 300.4
12 / 60
Under 230.66, service equipment is required to be:
230.66 requires service equipment to be marked to identify it as being suitable for use as service equipment, and all service equipment shall be listed or field evaluated.
Source: CEC 230.66(A)
13 / 60
The 'AIC' (interrupting rating) of a device is:
The CEC defines interrupting rating as the highest current at rated voltage that a device is identified to interrupt under standard test conditions.
Your offset bends use a multiplier of 1.4. For a 10-inch offset, the distance between the two bend marks (offset depth times multiplier) is:
Distance between bends = offset depth × multiplier = 10 in × 1.4 = 14 in.
Source: Conduit bending (offset × multiplier)
15 / 60
Where it is impracticable to place the service head above the point of attachment, 230.54(C) permits the service head to be located not farther than what distance from the point of attachment?
The exception to 230.54(C) says that where it is impracticable to locate the service head or gooseneck above the point of attachment, it shall be permitted not farther than 600 mm (24 in.) from the point of attachment.
Source: CEC 230.54(C) Exception
16 / 60
Under 210.21, lampholders connected to a branch circuit having a rating in excess of 20 amperes shall be:
210.21: where connected to a branch circuit having a rating in excess of 20 amperes, lampholders shall be of the heavy-duty type.
Source: CEC 210.21
17 / 60
Under 250.52(A)(3), a concrete-encased electrode can consist of at least 20 ft of:
250.52(A)(3) says a concrete-encased electrode shall consist of at least 6.0 m (20 ft) of either of the listed materials; one of them, item (2), is bare copper conductor not smaller than 4 AWG.
Source: CEC 250.52(A)(3)
18 / 60
Type UF cable is suitable for:
Type UF cable is permitted for use underground, including direct burial in the earth (340.10(1)), and for wiring in wet, dry, or corrosive locations (340.10(3)).
Source: CEC 340.10
19 / 60
Under 358.30(A), EMT shall be securely fastened in place at intervals not to exceed:
358.30(A)(1) requires EMT to be securely fastened in place at intervals not to exceed 3 m (10 ft).
Source: CEC 358.30(A)
20 / 60
For a grounded system, the conductor that connects the equipment grounding conductors and the service-disconnect enclosure to the grounded (neutral) conductor within the enclosure is the:
250.24(C) requires an unspliced main bonding jumper to connect the equipment grounding conductor(s) and the service-disconnect enclosure to the grounded conductor within the enclosure for each service disconnect, in accordance with 250.28.
Source: CEC 250.28
21 / 60
A pendant box supporting a luminaire hangs from a rigid metal conduit stem longer than 450 mm (18 in.). Under 314.23, the stem shall be connected to the wiring system with:
314.23: for pendant conduit stems longer than 450 mm (18 in.), the stems shall be connected to the wiring system with listed swivel hangers suitable for the location.
Source: CEC 314.23
22 / 60
A kitchen countertop receptacle outlet is mounted on the wall above the counter. Under 210.52, it may be located not more than how far above the countertop?
210.52: countertop receptacle outlets may be located on or above, but not more than 500 mm (20 in.) above, a countertop or work surface.
Source: CEC 210.52
23 / 60
A snap switch has conductor push-in (screwless) terminals and is not listed and marked for other conductors. Under 404.14, it shall be connected with:
404.14: snap switches connected using conductor push-in terminals shall be installed on branch circuits not greater than 15 amperes and connected with 14 AWG solid copper wire only, unless listed and marked for other conductors.
Source: CEC 404.14
24 / 60
A ground rod electrode must be at least how long in contact with the soil?
A rod/pipe electrode must have at least 8 ft in contact with the soil.
Source: CEC 250.53(A)(4)
25 / 60
Under 680.22(A)(4), receptacles rated 125 volts through 250 volts, 60 amperes or less, located within 20 ft of the inside walls of a pool shall have:
680.22(A)(4) requires all receptacles rated 125 volts through 250 volts, 60 amperes or less, located within 6.0 m (20 ft) of the inside walls of a pool to have GFCI protection complying with 680.5(B) or SPGFCI protection complying with 680.5(C), as applicable.
Source: CEC 680.22(A)(4)
26 / 60
[Kitchen job] The house has a main kitchen and a second kitchen in a guest suite. Under 210.52, a single small-appliance branch circuit may serve countertop receptacles in:
210.52: no small-appliance branch circuit shall serve more than one kitchen.
Source: CEC 210.52
27 / 60
Ambient-temperature correction factors (for ambient other than 30 C) come from:
Ambient temperature correction factors for ambient temperatures other than 30°C (86°F) come from Table 310.15(B)(1)(1).
Source: CEC Table 310.15(B)(1)(1)
28 / 60
NM cable is prohibited in wet or damp locations (334.12(B)(4)), so the garage-exterior run goes in a raceway. Under 300.9, the interior of a raceway installed in a wet location above grade is considered:
334.12(B)(4) prohibits Type NM cable in wet or damp locations. 300.9 says that where raceways are installed in wet locations above grade, the interior of the raceway shall be considered a wet location, and insulated conductors and cables in them shall comply with 310.10(C).
Source: CEC 334.12(B)(4); 300.9
29 / 60
Under 314.23, mounting screws are allowed to pass through the box only if:
314.23: screws shall not pass through the box unless exposed threads in the box are protected using approved means to avoid abrasion of conductor insulation.
Source: CEC 314.23
30 / 60
A new deck is built within 102 mm (4 in.) horizontally of a dwelling unit. Under 210.52, the deck must have:
210.52: balconies, decks, and porches within 102 mm (4 in.) horizontally of the dwelling unit shall have at least one receptacle outlet accessible from the balcony, deck, or porch.
Source: CEC 210.52
31 / 60
For equipment operating at 151-600 V to ground under Condition 3 (exposed live parts on both sides of the working space), the minimum working-space depth is:
At 151-600 V to ground, Condition 3 requires a 4 ft working-space depth.
Source: CEC Table 110.26(A)(1)
32 / 60
The informational note in 210.19 says branch-circuit conductors give reasonable efficiency of operation when sized to prevent a voltage drop at the farthest outlet exceeding:
210.19 informational note: branch-circuit conductors sized to prevent a voltage drop exceeding 3 percent at the farthest outlet, with a total drop on feeders and branch circuits not exceeding 5 percent, provide reasonable efficiency of operation.
Source: CEC 210.19
33 / 60
Under 210.8(A)(11), a dwelling laundry-area receptacle requires:
Laundry areas are item (11) on the dwelling-unit list in 210.8(A) (item (12) is indoor damp and wet locations), and 210.8 requires a listed Class A GFCI to provide protection in accordance with 210.8(A) through (F).
Source: CEC 210.8(A)(11)
34 / 60
A feeder uses two conductors per phase run in parallel in one raceway. When applying the adjustment factors of 310.15, each current-carrying conductor of a paralleled set is:
310.15: each current-carrying conductor of a paralleled set of conductors shall be counted as a current-carrying conductor when applying the adjustment factors.
Source: CEC 310.15
35 / 60
An AC general-use snap switch may control a motor load not exceeding ___ of its ampere rating:
404.14(A)(4) permits an alternating-current general-use snap switch to control motor loads not exceeding 80 percent of the ampere rating of the switch at its rated voltage.
Source: CEC 404.14(A)(3)
36 / 60
Which scope section opens the CEC article that covers general requirements for communications systems?
800.1 Scope: this article covers general requirements for communications systems.
Source: CEC Article 800 (communications)
37 / 60
Under 314.27(A)(2), at every ceiling outlet used exclusively for lighting, the box shall be required to support a luminaire weighing a minimum of:
314.27(A)(2) requires boxes at ceiling outlets used exclusively for lighting to support a luminaire weighing a minimum of 23 kg (50 lb); a heavier luminaire is supported independently unless the box is listed for the weight.
Source: CEC 314.27(A)
38 / 60
Under 110.26, in all cases the work space in front of electrical equipment must permit its doors or hinged panels at least:
110.26: in all cases, the work space shall permit at least a 90-degree opening of equipment doors or hinged panels.
Source: CEC 110.26
39 / 60
At least one 125V receptacle must be located ___ from the inside pool wall:
At least one 125 V, 15- or 20-A receptacle must be located 6 to 20 ft from the inside pool wall.
Source: CEC 680.22(A)(1)
40 / 60
Under 310.15(E)(1), a neutral conductor that carries only the unbalanced current from other conductors of the same circuit is:
310.15(E)(1) says a neutral conductor that carries only the unbalanced current from other conductors of the same circuit shall not be required to be counted when applying the provisions of 310.15(C)(1).
Source: CEC 310.15(E)(1)
41 / 60
Under the general dwelling rule, no point measured along the floor line of any wall space may be more than ___ from a receptacle outlet:
No point along a wall-space floor line may be more than 6 ft from a receptacle.
Source: CEC 210.52(A)(1)
42 / 60
In exposed work, a run of Type NM cable passes through a floor. Under 334.15, the enclosing conduit, tubing, or other approved means must extend at least how far above the floor?
334.15: where passing through a floor, the cable shall be enclosed in RMC, IMC, EMT, Schedule 80 PVC, RTRC marked -XW, or other approved means extending at least 150 mm (6 in.) above the floor.
Source: CEC 334.15
43 / 60
A dedicated (individual) branch circuit supplies:
An individual branch circuit supplies only one piece of utilization equipment.
A kitchen counter space ___ or wider requires a receptacle outlet:
A countertop/work surface 12 in or wider requires a receptacle.
Source: CEC 210.52(C)
45 / 60
The grounding electrode conductor to a concrete-encased electrode is not required to be larger than:
The GEC to a concrete-encased electrode need not exceed 4 AWG copper.
Source: CEC 250.66(B)
46 / 60
EMT must be securely fastened within what distance of each outlet box or fitting?
EMT must be fastened within 3 feet of each box/termination.
Source: CEC 358.30(A)
47 / 60
Under 110.14(C), conductors with temperature ratings higher than specified for terminations are permitted to be used for:
110.14(C) permits conductors with temperature ratings higher than specified for terminations to be used for ampacity adjustment, correction, or both, while the temperature rating associated with the ampacity must not exceed the lowest rating of any connected termination, conductor, or device.
Source: CEC 310.15(C)(1); Table 310.16; 110.14(C)
48 / 60
Standard branch-circuit overcurrent device ratings include:
15, 20, 30, 40, 50 A are among the standard OCPD ratings.
Source: CEC 240.6(A)
49 / 60
Under 250.53(A)(3), where multiple rod, pipe, or plate electrodes are installed, they shall be spaced not less than:
250.53(A)(3) requires multiple rod, pipe, or plate electrodes installed to meet this section to be not less than 1.8 m (6 ft) apart.
Source: CEC 250.53(A)(3)
50 / 60
A continuous load is one where the maximum current is expected to continue for at least:
A continuous load runs at its maximum current for 3 hours or more.
Source: CEC Article 100 (Continuous Load)
51 / 60
Under 250.52, a ground ring encircling a building, in direct contact with the earth, must consist of at least 6.0 m (20 ft) of bare copper conductor not smaller than:
250.52: a ground ring encircling the building or structure, in direct contact with the earth, consists of at least 6.0 m (20 ft) of bare copper conductor not smaller than 2 AWG.
Source: CEC 250.52
52 / 60
The pool bonding conductor must be:
The pool bonding conductor is solid, not stranded, copper.
Source: CEC 680.26(B)
53 / 60
In a STRAIGHT pull, the length of a pull/junction box must be at least ___ the trade size of the largest raceway:
314.28(A)(1) requires, in straight pulls, the length of the box or conduit body to be not less than eight times the metric designator (trade size) of the largest raceway.
Source: CEC 314.28(A)(1)
54 / 60
Which scope section opens the CEC article that covers metal-clad cable, Type MC?
330.1 Scope: this article covers the use, installation, and construction specifications of metal-clad cable, Type MC.
Source: CEC Article 330
55 / 60
A grounding electrode conductor (GEC) run solely to a ground rod is not required to be larger than:
A GEC connected only to rod/pipe/plate electrode(s) need not exceed 6 AWG copper.
Source: CEC 250.66(A)
56 / 60
Which scope section opens the CEC article that covers the installation of wiring and equipment of fire alarm systems?
760.1 Scope: this article covers the installation of wiring and equipment of fire alarm systems.
Source: CEC Article 760 (fire alarm)
57 / 60
When applying the adjustment factors of 310.15(C)(1), an equipment grounding conductor (EGC) is:
310.15(F) says a grounding or bonding conductor shall not be counted when applying the provisions of 310.15(C)(1).
Source: CEC 310.15(F)
58 / 60
Which of these rooms appears on the 210.8(A) GFCI list for a dwelling unit?
Kitchens are item (6) on the dwelling-unit GFCI list in 210.8(A).
Source: CEC 210.8(A)(6)
59 / 60
Per Table 250.122, the minimum COPPER EGC for a 20 A circuit is:
A 20 A circuit requires at least a 12 AWG copper EGC.
Source: CEC Table 250.122
60 / 60
Rear access is required to work on nonelectrical parts on the back of an enclosed dead-front switchboard. Under 110.26, the minimum horizontal working space to provide there is:
110.26: where rear access is required to work on nonelectrical parts on the back of enclosed equipment, a minimum horizontal working space of 762 mm (30 in.) shall be provided.