NCCER - ELECTRICAL LEVEL 1: SAFETY FOR
ELECTRICIANS MODULE 2 (2025/2026) QUESTIONS
AND DETAILED CORRECT ANSWERS ACTUAL
Page | 1
REAL EXAM |EXPERT VERIFIED FOR
GUARANTEED PASS|
TOP RATED A+.
NCCER
Pass the NCCER Electrical Level 1 exam 2025/2026 with confidence. This
exam resource features questions in areas like: electrical theory, circuits,
safety, and basic systems. This study guide is perfect for apprentices, trade
students, and entry-level electricians preparing for certification and hands-
on work.
Double insulated/ungrounded tools...... ANSWER ......Electrical tools
that are constructed so that the case is insulated from electrical energy.
The case is made of a nonconductive material
Ground Fault Circuit Interrupter (GFCI)...... ANSWER ......A protective
device that functions to de-energize a circuit or portion thereof within an
established period of time when a current to ground exceeds some
predetermined value. This value is less than that required to operate the
over current protective device of the supply circuit.
4 most life threatening hazards on a construction site...... ANSWER ......-
Falls
, -Electric shock/arc burns
-Being crushed by falling material
-Being struck by flying or moving equipment
Page | 2
electrical current...... ANSWER ......movement of electrons
example of conductors...... ANSWER ......silver, copper, steel,
aluminimum, human body
Effect of 5mA shock...... ANSWER ......slight shock, involuntary
movement
Effect of 6mA-30mA...... ANSWER ......painful shock, loss of muscle
control
Effect of 50mA- 150mA...... ANSWER ......Extreme pain, respiratory
arrestm severe muscular contractions, death possible
Effect of 1,000 mA - 4,300mA...... ANSWER ......VFIB, Nerve damage,
typically results in death
main cause of electrical accidents...... ANSWER ......contact with
conductors
ELECTRICIANS MODULE 2 (2025/2026) QUESTIONS
AND DETAILED CORRECT ANSWERS ACTUAL
Page | 1
REAL EXAM |EXPERT VERIFIED FOR
GUARANTEED PASS|
TOP RATED A+.
NCCER
Pass the NCCER Electrical Level 1 exam 2025/2026 with confidence. This
exam resource features questions in areas like: electrical theory, circuits,
safety, and basic systems. This study guide is perfect for apprentices, trade
students, and entry-level electricians preparing for certification and hands-
on work.
Double insulated/ungrounded tools...... ANSWER ......Electrical tools
that are constructed so that the case is insulated from electrical energy.
The case is made of a nonconductive material
Ground Fault Circuit Interrupter (GFCI)...... ANSWER ......A protective
device that functions to de-energize a circuit or portion thereof within an
established period of time when a current to ground exceeds some
predetermined value. This value is less than that required to operate the
over current protective device of the supply circuit.
4 most life threatening hazards on a construction site...... ANSWER ......-
Falls
, -Electric shock/arc burns
-Being crushed by falling material
-Being struck by flying or moving equipment
Page | 2
electrical current...... ANSWER ......movement of electrons
example of conductors...... ANSWER ......silver, copper, steel,
aluminimum, human body
Effect of 5mA shock...... ANSWER ......slight shock, involuntary
movement
Effect of 6mA-30mA...... ANSWER ......painful shock, loss of muscle
control
Effect of 50mA- 150mA...... ANSWER ......Extreme pain, respiratory
arrestm severe muscular contractions, death possible
Effect of 1,000 mA - 4,300mA...... ANSWER ......VFIB, Nerve damage,
typically results in death
main cause of electrical accidents...... ANSWER ......contact with
conductors
