Journeyman electrician exam prep with
100% verified solutions
What table sizes bonding jumpers for for AC systems? CORRECT ANSWERS
250.102(C)(1)
The NEC defines continuous load to be a load where max current on the circuit
continues for at least how many hours? CORRECT ANSWERS Three
To use the adjustment factors in table 310.15(B)(3)(A), you must have greater than how
many current carrying conductors in a raceway? CORRECT ANSWERS Greater than
three
Where in the NEC codebook would you find EMT sizes for a given size and number of
conductors? CORRECT ANSWERS Annex C, Table C.1
Section 210.20(A) states that the over current protection for branch circuits including
continuous loads must be greater than 100% of the noncontinuous plus ____ of the
continuous load. CORRECT ANSWERS 125%
Liquidtight Flexible Metal Conduit shall be fastened within of each box or other conduit
termination CORRECT ANSWERS Twelve inches
314.28(A)(1) states that straight pulls in pull boxes with conductors size 4 AWG or
larger, box length should be greater than or equal to times the trade diameter of the
largest conduit entering box. CORRECT ANSWERS Eight
Chapter 9 note 4 states conduit nipples less than 24 inches can fill to a max of their
cross sectional area CORRECT ANSWERS 60 percent
Table 348.22 gives the max number of insulated conductors in size _______ FMC?
CORRECT ANSWERS 3/8 (trade size)
Guest rooms of hotels, motels, & sleeping rooms in dorms need a MIN or _____ general
purpose receptacles installed that are readily accessible? CORRECT ANSWERS Two
When branch-circuit conductors are contained inside a ballast compartment and they
are within 3 inches of the ballast, the conductors shall have a temperature rating of at
LEAST _____.
a) 105 degrees C
b) 90 degrees C
c) 75 degrees C
d) 60 degrees C CORRECT ANSWERS B: 90 degrees C
, Ref: 410.68
Class _____ locations are those that are hazardous because of the presence of easily
ignitible fibers or materials producing combustible flyings.
a) I
b) II
c) III
d) IV CORRECT ANSWERS C: III
Ref: 500.5(D)
Class _____ locations are those in which flammable gases, flammable liquid produced
vapors, or combustible liquid produced vapors are present that are explodable.
CORRECT ANSWERS Class 1
Class ____ locations are those that are hazardous because of combustible dust
CORRECT ANSWERS Class II
Conductors with _______ Insulation have a greater ampacity when used in a dry
location compared to when used in a wet location CORRECT ANSWERS THHW
When calculating total load for buildings and finding minimum branch circuit load, what
must be factored into the volt amps for an exterior electric sign? CORRECT ANSWERS
Demand load (1.25)
Table C.11 and C.11(A) show conductor numbers for size for schedule 40 PVC, what is
the difference in charts? CORRECT ANSWERS Compact vs stranded conductors
332.30 states that type MI cable shall be supported at intervals of at least how many
feet? CORRECT ANSWERS Six feet
What table sizes equipment grounding conductors for specific over current devices?
CORRECT ANSWERS 250.122
Wye is another term for what kind of systems? CORRECT ANSWERS Three phase
What is the equation for voltage drop? CORRECT ANSWERS VD=2KID/CM
In the voltage drop equation, what is the value CM, and where is it found in the NEC
codebook? CORRECT ANSWERS Circular mile, chapter 9, table 8
Conductors installed under at least _______ inches of concrete are considered by NEC
Section 230.6 to be outside the building. CORRECT ANSWERS 2 inches
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