NCCER Module 8 - Raceways and
Fittings Questions and Answers | Latest
Version | 2024/2025 | Correct & Verified
What is the purpose of a raceway in an electrical system?
✔✔ A raceway protects and organizes electrical wires, ensuring safety and ease of maintenance.
Why is it important to use the correct fittings with raceways?
✔✔ Correct fittings provide secure connections and prevent damage to wires while maintaining
electrical continuity.
What is the role of a conduit bushing?
✔✔ A conduit bushing protects wires from sharp edges at the ends of conduits, preventing
insulation damage.
How does a junction box function within a raceway system?
✔✔ A junction box provides a safe space for wire connections and allows for access during
maintenance.
1
,What type of material is commonly used for rigid metal conduits?
✔✔ Rigid metal conduits are typically made of galvanized steel or aluminum for durability and
corrosion resistance.
Why is it essential to bond metallic raceways in an electrical system?
✔✔ Bonding ensures that all metallic parts are electrically connected, preventing potential
shocks and maintaining system grounding.
What is the purpose of a pull box in a raceway system?
✔✔ A pull box facilitates pulling wires through long or complex raceway runs by providing an
accessible midpoint.
How are flexible conduits typically used in electrical installations?
✔✔ Flexible conduits are used where movement or vibration is expected, or in areas with tight
or irregular spaces.
What is an expansion fitting, and why is it used in a raceway?
✔✔ An expansion fitting accommodates thermal expansion and contraction in conduits,
preventing damage to the system.
2
, What does EMT stand for, and how is it commonly used?
✔✔ EMT stands for Electrical Metallic Tubing, which is used for lightweight and easily
bendable raceway installations.
How is PVC conduit different from metallic conduit?
✔✔ PVC conduit is made of plastic, offering resistance to corrosion and being lightweight,
whereas metallic conduit provides higher mechanical strength.
Why is it necessary to ream conduit ends after cutting?
✔✔ Reaming removes burrs and sharp edges from conduit ends, preventing damage to wire
insulation during installation.
What is the purpose of a conduit strap?
✔✔ A conduit strap secures the conduit to walls, ceilings, or other surfaces, keeping the raceway
in place.
How does liquid-tight flexible conduit differ from standard flexible conduit?
3
Fittings Questions and Answers | Latest
Version | 2024/2025 | Correct & Verified
What is the purpose of a raceway in an electrical system?
✔✔ A raceway protects and organizes electrical wires, ensuring safety and ease of maintenance.
Why is it important to use the correct fittings with raceways?
✔✔ Correct fittings provide secure connections and prevent damage to wires while maintaining
electrical continuity.
What is the role of a conduit bushing?
✔✔ A conduit bushing protects wires from sharp edges at the ends of conduits, preventing
insulation damage.
How does a junction box function within a raceway system?
✔✔ A junction box provides a safe space for wire connections and allows for access during
maintenance.
1
,What type of material is commonly used for rigid metal conduits?
✔✔ Rigid metal conduits are typically made of galvanized steel or aluminum for durability and
corrosion resistance.
Why is it essential to bond metallic raceways in an electrical system?
✔✔ Bonding ensures that all metallic parts are electrically connected, preventing potential
shocks and maintaining system grounding.
What is the purpose of a pull box in a raceway system?
✔✔ A pull box facilitates pulling wires through long or complex raceway runs by providing an
accessible midpoint.
How are flexible conduits typically used in electrical installations?
✔✔ Flexible conduits are used where movement or vibration is expected, or in areas with tight
or irregular spaces.
What is an expansion fitting, and why is it used in a raceway?
✔✔ An expansion fitting accommodates thermal expansion and contraction in conduits,
preventing damage to the system.
2
, What does EMT stand for, and how is it commonly used?
✔✔ EMT stands for Electrical Metallic Tubing, which is used for lightweight and easily
bendable raceway installations.
How is PVC conduit different from metallic conduit?
✔✔ PVC conduit is made of plastic, offering resistance to corrosion and being lightweight,
whereas metallic conduit provides higher mechanical strength.
Why is it necessary to ream conduit ends after cutting?
✔✔ Reaming removes burrs and sharp edges from conduit ends, preventing damage to wire
insulation during installation.
What is the purpose of a conduit strap?
✔✔ A conduit strap secures the conduit to walls, ceilings, or other surfaces, keeping the raceway
in place.
How does liquid-tight flexible conduit differ from standard flexible conduit?
3
