NCCER ELECTRICAL MODULE 2 LEVEL 2
COMPREHENSIVE TEST 2026 QUESTIONS
WITH SOLUTIONS GRADED A+
◉ Suppose a loose connection has been exposed bare conductor and
it contacts the edge of a metal enclosure. Is this an example of a
short circuit or a ground fault? Answer: ground fault
◉ A single-phase system has two legs, Leg A and Leg B. If Leg A is
carrying 50A and Leg B is carrying 45A, the current carried by the
neutral is _____. Answer: 50A-45A=5A (Leg A- Leg B)
◉ Assuming the use of 75 degrees Celsius copper conductors, a
200A commercial services would require? Answer: 3/0 service
conductors
◉ A ground rod must be installed in a coastal location and can only
be driven halfway before encountering a rock shelf. One alternative
is to _____. Answer: burry the rod in a trench at least 30" (750 mm)
deep
◉ The EGC for a flexible metal conduit connection to a motor
supplied with a 20A circuit____. Answer: 12 AWG copper
, ◉ When using nonmetallic boxes with type NM cable, the grounding
wire _____. Answer: is not required to be connected to the box
◉ When grounding at more than one building, the GEC at the second
building is sized using _____. Answer: NEC Table 250.66
◉ If the voltage drop between a grounding electrode and an
auxiliary potential electrode is 10V and a current of 10A is passed
between an auxiliary current electrode and the grounding electrode,
the resistance is __. Answer: 1 ohm
◉ When completing a three-point test, the potential electrode is
placed at ____. Answer: 62% of the current electrode distance
◉ Item B in Figure RQ01 represents the _____. Answer: ungrounded
conductors (Hot)
◉ Item E in Figure RQ01 represents the _____. Answer: grounding
electrode conductor
◉ Item C in Figure RQ01 represents the _____. Answer: grounded
conductor (Neutral)
COMPREHENSIVE TEST 2026 QUESTIONS
WITH SOLUTIONS GRADED A+
◉ Suppose a loose connection has been exposed bare conductor and
it contacts the edge of a metal enclosure. Is this an example of a
short circuit or a ground fault? Answer: ground fault
◉ A single-phase system has two legs, Leg A and Leg B. If Leg A is
carrying 50A and Leg B is carrying 45A, the current carried by the
neutral is _____. Answer: 50A-45A=5A (Leg A- Leg B)
◉ Assuming the use of 75 degrees Celsius copper conductors, a
200A commercial services would require? Answer: 3/0 service
conductors
◉ A ground rod must be installed in a coastal location and can only
be driven halfway before encountering a rock shelf. One alternative
is to _____. Answer: burry the rod in a trench at least 30" (750 mm)
deep
◉ The EGC for a flexible metal conduit connection to a motor
supplied with a 20A circuit____. Answer: 12 AWG copper
, ◉ When using nonmetallic boxes with type NM cable, the grounding
wire _____. Answer: is not required to be connected to the box
◉ When grounding at more than one building, the GEC at the second
building is sized using _____. Answer: NEC Table 250.66
◉ If the voltage drop between a grounding electrode and an
auxiliary potential electrode is 10V and a current of 10A is passed
between an auxiliary current electrode and the grounding electrode,
the resistance is __. Answer: 1 ohm
◉ When completing a three-point test, the potential electrode is
placed at ____. Answer: 62% of the current electrode distance
◉ Item B in Figure RQ01 represents the _____. Answer: ungrounded
conductors (Hot)
◉ Item E in Figure RQ01 represents the _____. Answer: grounding
electrode conductor
◉ Item C in Figure RQ01 represents the _____. Answer: grounded
conductor (Neutral)
