NCCER Electrical Level 1 Mod 1
Orientation to the Electrical Trade Study
Questions | Latest Version | 2024/2025 |
Correct & Verified
What is the primary role of an electrician in the construction industry?
✔✔An electrician is responsible for installing, maintaining, and repairing electrical systems in
residential, commercial, and industrial buildings.
What is the difference between residential, commercial, and industrial electrical work?
✔✔Residential electrical work involves wiring homes, commercial work focuses on offices and
retail spaces, and industrial work deals with large-scale systems in factories or plants.
Why is safety a top priority in the electrical trade?
✔✔Safety is essential in the electrical trade to prevent accidents such as electric shocks, fires,
and injuries, ensuring both the worker's and the public's well-being.
What are some common tools an electrician uses in their daily work?
✔✔Common tools include wire strippers, pliers, screwdrivers, voltmeters, drill, tape measure,
and a level.
1
, What is the significance of understanding the National Electrical Code (NEC)?
✔✔The NEC provides standardized guidelines to ensure electrical installations are safe,
efficient, and meet legal requirements, protecting workers and occupants.
What are the three main components of an electrical circuit?
✔✔The three main components are the power source, conductors (wires), and load (devices that
use electricity like lights or motors).
What is the importance of grounding in electrical systems?
✔✔Grounding provides a safe path for electricity to flow back to the earth in case of a fault,
preventing electrical shock or fire hazards.
What is a circuit breaker and how does it work?
✔✔A circuit breaker automatically interrupts the flow of electricity when it detects an overload
or fault, preventing damage to the electrical system.
What does the term "ampacity" refer to?
2
Orientation to the Electrical Trade Study
Questions | Latest Version | 2024/2025 |
Correct & Verified
What is the primary role of an electrician in the construction industry?
✔✔An electrician is responsible for installing, maintaining, and repairing electrical systems in
residential, commercial, and industrial buildings.
What is the difference between residential, commercial, and industrial electrical work?
✔✔Residential electrical work involves wiring homes, commercial work focuses on offices and
retail spaces, and industrial work deals with large-scale systems in factories or plants.
Why is safety a top priority in the electrical trade?
✔✔Safety is essential in the electrical trade to prevent accidents such as electric shocks, fires,
and injuries, ensuring both the worker's and the public's well-being.
What are some common tools an electrician uses in their daily work?
✔✔Common tools include wire strippers, pliers, screwdrivers, voltmeters, drill, tape measure,
and a level.
1
, What is the significance of understanding the National Electrical Code (NEC)?
✔✔The NEC provides standardized guidelines to ensure electrical installations are safe,
efficient, and meet legal requirements, protecting workers and occupants.
What are the three main components of an electrical circuit?
✔✔The three main components are the power source, conductors (wires), and load (devices that
use electricity like lights or motors).
What is the importance of grounding in electrical systems?
✔✔Grounding provides a safe path for electricity to flow back to the earth in case of a fault,
preventing electrical shock or fire hazards.
What is a circuit breaker and how does it work?
✔✔A circuit breaker automatically interrupts the flow of electricity when it detects an overload
or fault, preventing damage to the electrical system.
What does the term "ampacity" refer to?
2
