ELECTRICAL WIRING RESIDENTIAL CORE
WIRING METHODS, CIRCUITS, AND NATIONAL
ELECTRICAL CODE (NEC) REVIEW 2026
◉ combustible.
Answer: An arc flash can ignite _____ material, causing a fire.
◉ rubber mat.
Answer: Workers standing on a ______ are insulated from the ground,
reducing the risk of shock.
◉ lockout/tagout procedure.
Answer: The ______ is a safety procedure used to ensure that
dangerous machines are properly shut off and not started up again
before maintenance or repair work is completed.
◉ three to five times the normal amount.
Answer: The amount of current required to trip a standard circuit
breaker is typically ______.
◉ Ohm's Law.
,Answer: ______ relates voltage, current, and resistance in electrical
circuits.
◉ arc flash suit.
Answer: A _____ is worn to protect workers from the thermal and
mechanical effects of an arc flash.
◉ limited approach boundary.
Answer: The ______ is the distance from an exposed energized part
within which a shock hazard exists.
◉ grounding.
Answer: _____ provides a path for electric current to flow to the earth,
reducing the risk of electric shock.
◉ voltage tester.
Answer: A ______ is used to check whether a circuit is live before
beginning work.
◉ insulating blankets.
Answer: Electricians use _____ to cover exposed energized parts and
reduce the risk of contact.
,◉ Class C fire extinguisher.
Answer: A _____ is specifically designed for use on electrical fires.
◉ personal protective equipment (PPE).
Answer: Electricians must wear ______ when working on energized
circuits to protect themselves from shock and arc flash.
◉ arc-rated.
Answer: Electricians' clothing must be ______ to protect against the
thermal effects of an arc flash.
◉ energized.
Answer: Before working on a circuit, electricians must ensure that it
is de-energized and cannot become ______ while work is being
performed.
◉ rubber gloves.
Answer: ______ are worn by electricians to protect against electric
shock.
◉ labeling.
Answer: Proper _____ of electrical equipment is required by the NEC
to ensure safety.
, ◉ fuses.
Answer: ______ are protective devices that open a circuit when the
current exceeds a specific value.
◉ insulating barriers.
Answer: ______ are used to prevent accidental contact with live
electrical parts.
◉ voltage.
Answer: ______ is the force that causes electric current to flow
through a conductor.
◉ current.
Answer: ______ is the flow of electric charge through a conductor.
◉ resistance.
Answer: ______ is the opposition to the flow of electric current in a
conductor.
◉ National Fire Protection Association (NFPA).
Answer: The _____ publishes the National Electrical Code (NEC).
WIRING METHODS, CIRCUITS, AND NATIONAL
ELECTRICAL CODE (NEC) REVIEW 2026
◉ combustible.
Answer: An arc flash can ignite _____ material, causing a fire.
◉ rubber mat.
Answer: Workers standing on a ______ are insulated from the ground,
reducing the risk of shock.
◉ lockout/tagout procedure.
Answer: The ______ is a safety procedure used to ensure that
dangerous machines are properly shut off and not started up again
before maintenance or repair work is completed.
◉ three to five times the normal amount.
Answer: The amount of current required to trip a standard circuit
breaker is typically ______.
◉ Ohm's Law.
,Answer: ______ relates voltage, current, and resistance in electrical
circuits.
◉ arc flash suit.
Answer: A _____ is worn to protect workers from the thermal and
mechanical effects of an arc flash.
◉ limited approach boundary.
Answer: The ______ is the distance from an exposed energized part
within which a shock hazard exists.
◉ grounding.
Answer: _____ provides a path for electric current to flow to the earth,
reducing the risk of electric shock.
◉ voltage tester.
Answer: A ______ is used to check whether a circuit is live before
beginning work.
◉ insulating blankets.
Answer: Electricians use _____ to cover exposed energized parts and
reduce the risk of contact.
,◉ Class C fire extinguisher.
Answer: A _____ is specifically designed for use on electrical fires.
◉ personal protective equipment (PPE).
Answer: Electricians must wear ______ when working on energized
circuits to protect themselves from shock and arc flash.
◉ arc-rated.
Answer: Electricians' clothing must be ______ to protect against the
thermal effects of an arc flash.
◉ energized.
Answer: Before working on a circuit, electricians must ensure that it
is de-energized and cannot become ______ while work is being
performed.
◉ rubber gloves.
Answer: ______ are worn by electricians to protect against electric
shock.
◉ labeling.
Answer: Proper _____ of electrical equipment is required by the NEC
to ensure safety.
, ◉ fuses.
Answer: ______ are protective devices that open a circuit when the
current exceeds a specific value.
◉ insulating barriers.
Answer: ______ are used to prevent accidental contact with live
electrical parts.
◉ voltage.
Answer: ______ is the force that causes electric current to flow
through a conductor.
◉ current.
Answer: ______ is the flow of electric charge through a conductor.
◉ resistance.
Answer: ______ is the opposition to the flow of electric current in a
conductor.
◉ National Fire Protection Association (NFPA).
Answer: The _____ publishes the National Electrical Code (NEC).
