NCCER Electrical Module 6 Device
Boxes Questions and Answers | Latest
Version | 2024/2025 | Correct & Verified
What is the primary purpose of an electrical box?
✔✔ An electrical box houses electrical connections, switches, outlets, and protects wiring from
damage.
What material is commonly used for electrical boxes?
✔✔ Electrical boxes are commonly made from plastic, steel, or aluminum, depending on the
installation requirements.
How do you ensure that an electrical box is securely mounted?
✔✔ Use screws or fasteners to anchor the box firmly to the framing or surface, ensuring it is
level and aligned.
Why is it important to size an electrical box correctly?
✔✔ Proper sizing ensures there is enough space for all wiring and devices while maintaining
safety and preventing overheating.
1
, What is the difference between a junction box and a device box?
✔✔ A junction box is used to house wire splices, while a device box contains switches or
outlets.
What type of electrical box is typically used in a ceiling-mounted light fixture installation?
✔✔ A ceiling box, often designed to support the weight of the fixture and accommodate wiring,
is used in this application.
How does a weatherproof electrical box differ from a standard electrical box?
✔✔ A weatherproof box is designed for outdoor use and protects electrical connections from
moisture and environmental elements.
What is the correct procedure for installing a metal electrical box in a wood-framed wall?
✔✔ Use box brackets or screws to attach the metal box to the wood studs securely, ensuring the
box is flush with the wall surface.
Why is grounding important for electrical boxes?
✔✔ Grounding prevents electrical shock by providing a safe path for stray currents to flow into
the earth.
2
Boxes Questions and Answers | Latest
Version | 2024/2025 | Correct & Verified
What is the primary purpose of an electrical box?
✔✔ An electrical box houses electrical connections, switches, outlets, and protects wiring from
damage.
What material is commonly used for electrical boxes?
✔✔ Electrical boxes are commonly made from plastic, steel, or aluminum, depending on the
installation requirements.
How do you ensure that an electrical box is securely mounted?
✔✔ Use screws or fasteners to anchor the box firmly to the framing or surface, ensuring it is
level and aligned.
Why is it important to size an electrical box correctly?
✔✔ Proper sizing ensures there is enough space for all wiring and devices while maintaining
safety and preventing overheating.
1
, What is the difference between a junction box and a device box?
✔✔ A junction box is used to house wire splices, while a device box contains switches or
outlets.
What type of electrical box is typically used in a ceiling-mounted light fixture installation?
✔✔ A ceiling box, often designed to support the weight of the fixture and accommodate wiring,
is used in this application.
How does a weatherproof electrical box differ from a standard electrical box?
✔✔ A weatherproof box is designed for outdoor use and protects electrical connections from
moisture and environmental elements.
What is the correct procedure for installing a metal electrical box in a wood-framed wall?
✔✔ Use box brackets or screws to attach the metal box to the wood studs securely, ensuring the
box is flush with the wall surface.
Why is grounding important for electrical boxes?
✔✔ Grounding prevents electrical shock by providing a safe path for stray currents to flow into
the earth.
2
