JATC homework code practice test
If the largest ungrounded conductor is 1/0 copper, what size copper grounding conductor do you need?
#6 Table 250.102(C)(1)
What is the volume allowance for #18awg
1.5in3 Table 314.16(B)
Deck boxes shall have an insulated equipment grounding conductor no smaller than _awg.
12 555.15(B)
How many #10 THWN conductors can be pulled into a 1" EMT conduit?
16 Annex C Table C.1
In a class 1 location, conduit seals shall be installed within _inches of the enclosure in each conduit entry into a pressurized enclosure.
18in 501.15(A)(2)
Laundry branch circuits shall be on a _ branch circuit.
20A 210.11(C)(2)
What is the amperage rating of a #2 FEPB cable Rated at 200 degrees Celsius installed in free air?
293A 310.15(B)(19)
The minimum wall space in a dwelling unit for a required outlet is?
2ft 210.52(A)(2)(1)
The code defines a "continuous" load as one in which the load is likely to continue for _ hour or more.
3
How many wires do you need to transmit 3 phase power
3 wires
What is the size of the copper grounding conductor when the largest service entrance conductor is 1750 MCM copper?
3/0 Table 250.66
What trade size box has a minimum volume of 21.5
4x2 1/8- round Table 314.16(A)
According to the NEC a luminaire that weighs more than _ pounds shall be supported independently of the outlet box.
50 314.27(A)(2)
Interior metal water piping located not more than _ from the point of entrance to building shall be permitted to be used as a conductor to interconnect electrodes that are part of the grounding electrode system.
5ft 250.68(C)
Auxiliary sheet metal gutters shall be supported their entire length at intervals not exceeding?
5ft 366.30(A)
Wall switches shall be located at least _, measured horizontally from the inside walls of a Spa or Hot Tub.
5ft 680.43(C)
The code requires at least one 20A circuit in the laundry, located within _ft from the intended location of the washer.
6 ft. 210.50(C)
The free length of conductors at each outlet and switch point for connecting to devices is _ inches.
6" 300.14
What is the head space required for a panel?
6.5 ft 110.26(A)(3)
What is the minimum spacing between grounding electrodes?
6ft 250.53(B)
What classification is the hazardous location with an explosive atmosphere of combustible dust?
Class 2 Location 500.5(C)
Construction of MV cables shall be of _ type conductors.
Copper, aluminum, copper-clad aluminum 328.100
In a dwelling unit kitchen which receptacles need to be GFCI A) A receptacle installed to serve kitchen countertop surface B) Receptacle installed under sink C) A receptacle installed within 6ft from the the top inside edge of the bowl of the sink. D) A and C E) All of the above
D 210.8(A)(6&7)
Cable limiters are not permitted to be connected to the supply side of the service disconnecting means. (T/F)
False 230.82(1)
Type UF cable CAN be used as Service Entrance Cable. (T/F)
False 340.12(A)
A receptacle used for a microwave mounted above a range needs to be tamper resistant. (T/F)
False 406.12 Exception 1
The terminal for the _ shall be the one connected to the screw shell.
Grounded conductor 200.10(C)
Circuits fed from direct current systems ungrounded conductors 4awg or larger shall _ at all terminations.
Identify by polarity 210.5(C)(2)
What is listed on an electrical appliance nameplate?
Identifying name 422.60(A)
_ size approved drainage openings shall be permitted to be installed in conduit bodies used in wet locations.
Not larger than 1/4" 314.15
In dealing with motors and related equipment when the code specifies "in sight from" it means that.......
The equipment must be visible. Must not be more than 50ft. Article 100
A transformer can be fed off the secondary feed. (T/F)
True
In a Dwelling unit Wet Location, an outlet box hood installed shall be listed and identified as "extra-duty." (T/F)
True 406.9(B)(1)
How many branch circuits for car lighting, ventilation, and heating per elevator car?
Two 620.22(A)
Maximum voltage for wind turbine output circuits connected to a 1 family dwelling shall be?
Up to 600v 694.10(A)
What is not permitted for connecting #6 wire and larger to terminal parts?
Wire binding screws 110.14(A)
Type S adapters shall be designed so that once inserted in a fuse holder they _.
cannot be removed 240.54(C)
The minimum size bonding conductor for the metal parts of a wading pool shall be _.
#8 680.26(B)
A conductor intended solely for grounding purposes shall be a bare conductor or color coded _.
-green with one or more yellow stripes -green 250.119
Luminaries installed in exposed or concealed locations under metal-corrugated sheet roof decking shall be installed and supported so there is not less than _ measured from the lowest surface of the roof decking to the top of the luminaire.
1 1/2" 410.10(F)
In battery storage rooms, battery racks shall have a minimum clearance between a cell container and any wall or structure of?
1" 480.10(C)
The load for each small-appliance branch circuit is required to be calculated at _.
1,500va 220.52(A)
In cellular metal floors what is the largest conductor size you can install?
1/0 374.20
Where noncombustible surface material is used on walls or ceilings, outlet boxes must be mounted so that they will be set back not more than _ from the face of the surface material.
1/4" 314.20
According to the NEC Service Drop Conductors, (600V and less) must be _ above finish grade.
10 ft 230.24(B)(1)
What is the minimum volume of a box trade size (4 x 2 1/8 x 1 1/2)
10.3 Table 314.16(A)
The minimum size grounding conductor permitted for deck boxes on a swimming pool is?
12 680.23(F)(1)&(2) Table 250.122
Residential direct burial branch circuits rated 120V or less with GFCI protection and a maximum over current protection of 20A shall have a minimum cover requirement of _ inches.
12 Table 300.5
Dry-type transformers installed indoors and rated 112 1/2 kw or less shall have a separation of at least _ from combustible material by fire resistant, heat- insulated barrier.
12" 450.21(A)
What is the minimum width of a countertop that requires a receptacle?
12" 210.52(C)(1)
Service entrance cables shall be supported by approved means within _ of every service head and at intervals not exceeding _.
12", 30" 230.51(A)
What is the FLC (Full Load Current) in a DC motor with 240v and 3 HP
12.2 Table 430.247
In general, branch circuit conductors supplying a single motor should have a capacity not less than _% of the motor full loaded circuit rating.
125% 210.19(A) 430.22
What is the overhead clearance for service conductors 600v or less going over a residential property.
12ft 230.24(B)(2)
Underground service conductors not encased in concrete shall be identified by a warning ribbon _ inches above the underground installation.
12in 300.5(D)(3)
What is the maximum voltage allowed by code for underwater lighting in a swimming pool?
150 680.23(A)(4)
For pools, no luminaries shall be installed for operation on supply circuits over _ between conductors.
150v 680.23(A)(4)
Instruments, pilot lights, and potential transformers shall be protected by a _ over current device.
15a or less 408.52
Where metal fences are located within _ft of the electrical conductors or equipment, the fence shall be bonded.
16ft 250.194(A)
What is the maximum number of insulated XHHW conductors (#12awg) in 3/8" FMC fittings outside conduit?
2 Table 348.22
What is the maximum size fuse that can be installed for a #18 fixture, wire, and be considered protected?
20 240.5(B)(2)
The distance between supports on RMC may be increased to _ft for exposed vertical risers from industrial machinery or fixed equipment.
20 344.30(B)(3)
All 15A and 20A, single phase 125V receptacles located within _ft of the inside wall of a pool shall be protected by a GFCI.
20 680.22(A)(4)
What is the maximum percent a dual-element fuse can be permitted to be increased in a motor circuit?
225% of full load current 430.52(C)(1) Exception (2)(b)
Direct buried service conductors, 1000V and less, shall have a minimum cover of _ inches of dirt.
24" Table 300.5
According to code, how many #14 TW conductors can be used in a run of 1" EMT Conduit?
25 Annex C Table C.1
Where conduit is threaded in the field, a standard cutting die with a taper of _ inches per foot shall be used.
3/4in 342.28
The capacity of a #10 TW not more than 3 wires when installed in conduit or cable is _ amps.
30 Table 310.15(B)(16)
Every RV site equipped with a 50a receptable shall also be equipped with a _ 125v receptacle.
30A 551.71(C)
What is the minimum ampacity for a shore power receptacle?
30a 555.19(A)(4)
Track lighting is not permitted to be installed less than 5ft above the floor unless it has a voltage of less than _ volts.
30v 410.151(C)(8)
Four #10 THHN, copper, current carrying conductors are installed in the same EMT in an ambient temperature of 30°C. The allowable ampacity of each of the conductors is _ amps.
32 Table 310.15(B)(3)(a) Table 310.15(B)(16)
What is the demand factor of 21, 10kw electric ranges?
36 kw Table 220.55
A home having 1200sq ft of useable floor area shall have a minimum general lighting load of how many watts?
3600 3w per sq ft 3x1200 Table 220.12
Floor mounted type FCC cable shall be covered with carpet squares not larger than _ square.
39.37" 324.41
Service drops must have a vertical, diagonal, and horizontal clearance of not less than _ ft from radio and television antennas.
3ft 225.19(B)
Service drop conductors shall maintain how much clearance from the sides and bottoms of windows?
3ft 225.19(D)(1) 230.9(A)
A dwelling unit attached garage with four car spaces will need _ number of receptacle outlets.
4 210.52(G)(1)
Where raceways contain _AWG or larger insulated conductors that enter a box the conductors shall be protected by a bushing.
4 AWG 300.4(G)
In a building where water pipe is available, the minimum size of the GEC for an ungrounded system with # 3/0 Cu service conductors shall be #_.
4 Cu 250.66
When electric vehicle supply equipment is using more than _ or more than 150v to ground a disconnecting means is needed in a readily accessible location.
60a 625.43
Receptacles other than those that provide power for pool water-pump motors shall not be less than _ft from the inside walls of a pool.
6ft. 680.22(A)(2)
A fixture that weighs more than _ lbs or exceeds _ in any dimension shall not be supported by the screw shell of a lamp holder.
6lbs, 16" 410.30(A)
A feeder or service neutral load is permitted to be reduced to _ percent on household electric ranges.
70% 220.61(B)
A 3x2x2 device box with internal cable clamps is used in a circuit wired with 14-2 Romex with ground. One convenience outlet will be attached to the box. Additional outlets will be required beyond this installation. For the purpose of determining if the box is large enough, how many conductors would be considered as being within the box?
8 1 device= 2 2 grounds= 1 cable clamps= 1 14-2 romex= 4 total = 8 conductors 314.16(B)(1) 314.16(B)(2) 314.16(B)(4)
How many 2a fluorescent lights running for 10 hours straight can you put on a 20a branch circuit?
8 20x.8=16 16/2=8 210.19(A)(1)(a)
Overhead Service-Drop conductors shall not be smaller than #_ awg copper wire.
8 230.23(B)
Conductors _ and larger must be stranded.
8 310.106(C)
Each patient bed location in a general care (category 2) health care facility shall have a minimum of _ receptacles.
8 517.18(B)
What is the wire size range for type XHH cable with 45 mil insulation?
8-2 Table 310.104(A)
For a 150a dwelling unit service what is the demand factor?
83% 310.15(B)(7)
In all cases, the work space shall permit at least a _ degree opening of equipment doors.
90° 110.26(A)(2)
Fixtures shall be constructed, installed, or equipped with guards so that the combustible material is not subjected to temperatures in excess of?
90°C 194°F 410.11
Where none of the bonded parts is in direct connection with the pool water, the pool water shall be in direct contact with an approved corrosion- resistant conductive surface that exposes not less than _ of surface area to the pool water at all times.
9in squared 680.26(C)
According to code, a wire located in a partially protected area such as under a roofed open porch would be located in?
A damp location Article 100 informational note
The branch circuit is rated at 15a, what is the total rating of the equipment fasted in place where lighting units are also supplied? A) 15a B) 7.5a C) 9.5
B) 7.5A 210.23(A)(2)
A recptacle is 6.5ft away from the outside edge of the bathtub or shower stall needs to be GFCI protected. (T/F)
False Anything installed within 6' needs GFCI, unless specified it is in a bathroom 210.8(A)(9)
According to the NEC, no more than _ over current devices may be used in any one lighting and appliance panel board.
No maximum 408.54
In determining the numbers of wires in a box for box fill a conductor passing through the box without a splice or tap with a conductor loop less than 12" is counted as_.
One wire 314.16(B)(1)
Attachment plugs and cord caps shall be constructed so that there are no exposed current carrying parts except _, _, or _.
Prongs, blades, or pins 406.7(A)
