Electrician 101 Questions and Answers |
Latest Update | 2024/2025 | Graded A+
What is the primary role of an electrician?
The primary role of an electrician is to install, maintain, and repair electrical systems and
equipment in residential, commercial, and industrial settings.
What are t...
✔✔ The primary role of an electrician is to install, maintain, and repair electrical systems and
equipment in residential, commercial, and industrial settings.
What are the common safety precautions electricians should take when working?
✔✔ Electricians should always wear personal protective equipment (PPE), follow lockout/tagout
procedures, and ensure the work area is safe from hazards.
How is electrical current measured, and what is its unit?
✔✔ Electrical current is measured in amperes (amps), which indicates the flow of electric charge
in a circuit.
What does voltage represent in an electrical system?
✔✔ Voltage represents the electrical potential difference between two points in a circuit,
indicating the force that pushes electric current through a conductor.
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,What are the main components of a basic electrical circuit?
✔✔ The main components include a power source, conductors (wires), a load (device), and a
switch to control the flow of electricity.
What is the difference between alternating current (AC) and direct current (DC)?
✔✔ Alternating current (AC) changes direction periodically, while direct current (DC) flows in
one direction steadily.
How can you identify a blown fuse in an electrical system?
✔✔ A blown fuse can often be identified by a visible break in the metal strip inside the fuse or
by checking if the circuit it protects is not functioning.
What is the purpose of grounding in electrical systems?
✔✔ Grounding provides a safe path for excess electrical current to dissipate into the earth,
reducing the risk of electrical shock and equipment damage.
What tools are essential for an electrician to have?
✔✔ Essential tools include wire strippers, pliers, screwdrivers, a multimeter, and a voltage tester,
among others.
2
, How can you determine the appropriate wire gauge for a specific application?
✔✔ The appropriate wire gauge can be determined by considering the amperage load, the length
of the run, and the installation environment, referring to the National Electrical Code (NEC)
guidelines.
What is the function of a circuit breaker?
✔✔ A circuit breaker automatically interrupts the electrical circuit when it detects an overload or
short circuit, preventing damage and reducing fire risks.
What should you do if you encounter exposed wiring during an electrical inspection?
✔✔ Exposed wiring should be immediately reported and repaired, as it poses a serious safety
hazard due to the risk of electrical shock or fire.
What are the common signs of electrical overload in a home?
✔✔ Common signs include frequently tripped circuit breakers, flickering lights, and warm or
discolored outlets.
What is the significance of the National Electrical Code (NEC)?
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