A Pull Box is a metal or plastic enclosure used in electrical wiring systems that provides access points for pulling and connecting wires. Think of it like a pit stop on a racetrack - it's where electricians can easily access, join, or redirect electrical wires in buildings. These boxes are essential because they make it possible to install and maintain electrical systems in buildings without having to tear down walls. They're called "pull boxes" because they help electricians literally pull wires through conduits (electrical pipes) and make connections. You might also see them referred to as junction boxes or electrical boxes in job descriptions.
Installed Pull Box|Pull Boxes at strategic locations throughout commercial buildings
Managed wire installations using Pull Box|Junction Box placement according to electrical codes
Supervised the layout and installation of Pull Box|Electrical Box systems in multi-story buildings
Typical job title: "Electricians"
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Q: How do you determine the appropriate size and location for pull boxes in a large commercial installation?
Expected Answer: A senior electrician should explain factors like wire count, conduit size, pulling distance, and accessibility requirements. They should mention following electrical codes and planning for future maintenance needs.
Q: What considerations do you take when supervising a team installing multiple pull boxes?
Expected Answer: Should discuss coordination with other trades, ensuring proper support methods, maintaining proper spacing, following building codes, and training junior electricians on proper installation techniques.
Q: What are the main code requirements for pull box installations?
Expected Answer: Should be able to explain basic National Electrical Code requirements for box fill calculations, support methods, and accessibility standards.
Q: How do you ensure proper grounding when installing pull boxes?
Expected Answer: Should explain proper grounding techniques, bonding requirements, and common mistakes to avoid during installation.
Q: What is the purpose of a pull box?
Expected Answer: Should explain that pull boxes provide access points for pulling wires and making connections, making installation and maintenance easier.
Q: What types of pull boxes are commonly used and where?
Expected Answer: Should be able to describe basic types (metal vs. plastic) and common installation locations like above suspended ceilings or in accessible utility spaces.