IEC FIRST YEAR SECOND SEMESTER
MIDTERM COMPREHENSIVE STUDY GUIDE
2026 FULL ANSWERS GRADED A+
⩥ A.
6.
Answer: As shown in Figure 121.212, a 120-volt post light is located in
the front yard of a house. To power the light, RMC will be installed
under the yard. In inches, what is the minimum depth from the top of the
conduit to the top of the dirt in the yard?
A.
6
B.
24
C.
18
D.
12
E.
4
⩥ D.
,24.
Answer: When a Type UF cable is installed under the driveway into a
Burger King, it is required to be buried at least ___ inches below the top
of the driveway (the circuit is GFCI protected).
A.
6
B.
12
C.
18
D.
24
⩥ D.
cover.
Answer: As used in NEC® Table 300.5, ___ is defined as the shortest
distance in millimeters (inches) measured between a point on the top
surface of any direct-buried conductor, cable, conduit, or other raceway
and the top surface of finished grade, concrete, or similar cover.
A.
rise
B.
backfill
,C.
depth
D.
cover
⩥ E.
6.
Answer: Refer to Figure 121.218. The raceway is Schedule 40 PVC and
contains a 120-volt, 20-amp GFCI-protected circuit. The conduit is
buried beneath the driveway for a house. The driveway is 6 inches thick.
The minimum distance for "X" is ___ inches.
A.
18
B.
24
C.
4
D.
12
E.
6
⩥ D.
, 18.
Answer: RMC is the wiring method used for the illustration shown
below.
The conduits are threaded wrenchtight into the entries in the bottom of
the "bell" box. No additional support is required for this installation (the
earth can support the conduits) if the conduit length from the finish
surface (dirt here) to the box is ___ inches or less.
A.
12
B.
6
C.
36
D.
18
⩥ B.
considers.
Answer: A 3/4" RMC comes out of the ground and is tightly threaded
into the hub of a 3/4" conduit body (such as an LB) that is 16 inches
above the ground. Section 314.23 in the NEC® ___ the conduit body to
be adequately supported by the rigid metal conduit.
A.
MIDTERM COMPREHENSIVE STUDY GUIDE
2026 FULL ANSWERS GRADED A+
⩥ A.
6.
Answer: As shown in Figure 121.212, a 120-volt post light is located in
the front yard of a house. To power the light, RMC will be installed
under the yard. In inches, what is the minimum depth from the top of the
conduit to the top of the dirt in the yard?
A.
6
B.
24
C.
18
D.
12
E.
4
⩥ D.
,24.
Answer: When a Type UF cable is installed under the driveway into a
Burger King, it is required to be buried at least ___ inches below the top
of the driveway (the circuit is GFCI protected).
A.
6
B.
12
C.
18
D.
24
⩥ D.
cover.
Answer: As used in NEC® Table 300.5, ___ is defined as the shortest
distance in millimeters (inches) measured between a point on the top
surface of any direct-buried conductor, cable, conduit, or other raceway
and the top surface of finished grade, concrete, or similar cover.
A.
rise
B.
backfill
,C.
depth
D.
cover
⩥ E.
6.
Answer: Refer to Figure 121.218. The raceway is Schedule 40 PVC and
contains a 120-volt, 20-amp GFCI-protected circuit. The conduit is
buried beneath the driveway for a house. The driveway is 6 inches thick.
The minimum distance for "X" is ___ inches.
A.
18
B.
24
C.
4
D.
12
E.
6
⩥ D.
, 18.
Answer: RMC is the wiring method used for the illustration shown
below.
The conduits are threaded wrenchtight into the entries in the bottom of
the "bell" box. No additional support is required for this installation (the
earth can support the conduits) if the conduit length from the finish
surface (dirt here) to the box is ___ inches or less.
A.
12
B.
6
C.
36
D.
18
⩥ B.
considers.
Answer: A 3/4" RMC comes out of the ground and is tightly threaded
into the hub of a 3/4" conduit body (such as an LB) that is 16 inches
above the ground. Section 314.23 in the NEC® ___ the conduit body to
be adequately supported by the rigid metal conduit.
A.
