What is the difference between junction box and pullbox?
Difference Between Junction Box and Pull Box
A junction box and a pull box are both enclosures used in electrical conduit systems, but they serve very different purposes in electrical installations. Understanding their differences is essential for safe, code-compliant wiring.
| Feature | Pull Box | Junction Box |
|---|---|---|
| Primary Function | Helps pull wires through long or bent conduit runs | Houses electrical wire splices and connections |
| Size & Design | Large, square or rectangular with open space and removable covers | Small, compact, includes knockouts for conduit entry |
| Code Compliance | NEC 314.28 – Focuses on size based on conduit and wire bend requirements | NEC 314.16 – Focuses on wire fill and box volume limitations |
| Material & Durability | Heavy-duty steel, stainless steel, or plastic for tough environments | Metal or plastic, suitable for indoor residential or commercial use |
| Environmental Use | Ideal for wet, outdoor, or industrial areas | Best for dry, indoor spaces like walls and ceilings |
| Access & Maintenance | Provides access for pulling and rerouting wires | Provides access for inspecting or modifying electrical connections |
| Cost & Installation Scale | More expensive; used in complex or large-scale conduit systems | Budget-friendly; used in smaller or residential electrical systems |
This table shows the main distinctions between the several types of boxes used in electrical systems and when to use each one.