QUESTIONS AND ANSWERS GRADED A+
What table sizes bonding jumpers for for AC systems?
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?
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?
Greater than three
Where in the NEC codebook would you find EMT sizes for a given size and
number of conductors?
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.
125%
,Liquidtight Flexible Metal Conduit shall be fastened within of each box or other
conduit termination
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.
Eight
Chapter 9 note 4 states conduit nipples less than 24 inches can fill to a max of their
cross sectional area
60 percent
Table 348.22 gives the max number of insulated conductors in size _______ FMC?
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?
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
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
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.
Class 1