Wire
The ampacity of each 12 AWG copper conductor inside a 3-conductor, nonmetallic, sheathed cable (Type NM) is ? .
20 A 334.80
Derating factors shall not apply to underground conductors entering or leaving an outdoor trench if those conductors have physical protection in the form of rigid metal conduit, ? , rigid PVC conduit, or RTRC conduit having a length not exceeding 10 feet and the number of conductors does not exceed four.
intermediate metal conduit 310.15 (C)
A continuous load is a load where the maximum current is expected to continue for ? or more.
3 Hours Article 100 Continuous duty
what table is used to find the area of fill for EMT conduit
Chapter 9 Table 4
The ampacity for each of the three 3 AWG THW copper conductors installed in a raceway in an ambient temperature of 40°C is ? .
88 A 310.15
A 200-ampere, 120/240-volt, single-phase service is required to supply a single-family dwelling. The NEC permits these conductors to have an ampacity not less than ? of the service rating.
83% 310.12 (A)
Where a branch circuit supplies continuous loads, or any combination of continuous and noncontinuous loads, the minimum branch-circuit conductor size shall have an ampacity not less than the noncontinuous load plus ? of the continuous load.
125% 210.19 (A)
Short radius conduit bodies are commonly referred to as capped elbows and ? elbows.
service-entrance
314.16(C)
The ampacity for three 3 AWG THW copper conductors installed in a raceway in an ambient temperature of 50°C is ? .
75 A 310.15
Twenty 10 AWG THHN copper current-carrying conductors are installed in the same EMT in an ambient temperature of 30°C. The ampacity of each of the conductors is ? .
20 A 310.15 (C)
Which of the following is generally not considered an example of a continuous load for the purposes of branch circuit sizing?
a. Residential electrical range
b. Residential fixed electric space-heating equipment and their associated motors
c. Residential fixed storage-type water heaters of 120 gallons or less
d. Mercantile show window lighting
a. Residential electrical range 422.13, 424.4(B), Article 100, definition
Three 12-2 Type UF cables are pulled into an underground PVC conduit. What is the maximum percentage conduit fill permitted for this installation?
40% 352.22
The ampacity of three 6 AWG THW copper conductors installed in a rigid metal conduit in an ambient temperature of 30°C is ? .
65 A 310.16
Where underground branch-circuit cable, multi-conductor Type UF, is installed as non-metallic shielded cable within a dwelling, the ampacity of Type UF cable is limited to that of Type NM cable as stated in 334.80.
True
False
True
What is the minimum size THWN copper conductor required for a branch circuit with a 12-ampere continuous load and a 12-ampere noncontinuous load in an ambient temperature of 86°F?
10 AWG THWN copper 210.19(A)
The maximum number of 8 AWG THHW aluminum conductors that can be installed in a 11/4-inch liquidtight flexible metal conduit is ? .
12 350.22
The ampacity of a 6 AWG copper XHHW-2 conductor is normally not subjected to the adjustment factors related to direct sunlight exposure of raceways and cables located on rooftops, per NEC 310.15(B)(2)
True
False
True
The general requirements for NEC electrical conductor connections at terminals, splices, and related temperature limitations are set forth in Article ? .
110
A branch circuit supplies a 240-volt, 3.55-kW storage type electric water heater that is considered to be a continuous load. Without an elevated ambient temperature, what is the minimum size circuit conductors required to supply this water heater?
12 AWG THWN copper 422.13
A multiconductor cable is installed in a conduit. This cable contains three 8 AWG XHHW and one 10 XHHW conductor. The percentage of conduit fill for this application is based on how many conductors?
1 conductor Chapter 9, Table 1, Notes to Tables, Note (9)
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