Knockout
A knockout is a term used in electrical installation for pre-made holes or openings in electrical boxes, panels, or enclosures. These are areas that can be easily removed (or "knocked out") to create paths for electrical wires, conduits, or cables. When electricians mention knockouts in their experience, they're referring to their ability to properly plan and create wire pathways in electrical installations. This is a fundamental skill in electrical work, similar to how plumbers work with pipe fittings or carpenters work with door frames.
Examples in Resumes
Installed and configured electrical panels using proper Knockout sizing and placement
Managed multiple commercial projects requiring precise Knockout implementation for conduit routing
Trained junior electricians on proper Knockout techniques and safety procedures
Typical job title: "Electricians"
Also try searching for:
Where to Find Electricians
Professional Organizations
Online Communities
Job Resources
Example Interview Questions
Senior Level Questions
Q: How do you determine the appropriate knockout size for different applications?
Expected Answer: A senior electrician should explain how they consider the wire size, number of conductors, conduit type, and code requirements when selecting knockout sizes. They should also mention the importance of maintaining box integrity and proper support.
Q: How do you handle a situation where you need to create a knockout in a live panel?
Expected Answer: They should emphasize that working on live panels should be avoided when possible, discuss proper lockout/tagout procedures, and explain when it's necessary to schedule a power shutdown.
Mid Level Questions
Q: What safety precautions do you take when removing knockouts?
Expected Answer: Should discuss proper tool usage, wearing appropriate PPE, ensuring no debris falls into panels, and checking for existing wires before knockout removal.
Q: How do you deal with unused knockout openings?
Expected Answer: Should explain the importance of using appropriate knockout seals or plugs to maintain the enclosure's integrity and meet code requirements.
Junior Level Questions
Q: What tools do you use for removing knockouts?
Expected Answer: Should be able to name basic knockout tools like punch sets, knockout drivers, and manual knockout sets, and describe their proper use.
Q: Why is it important to remove knockouts cleanly?
Expected Answer: Should explain how proper knockout removal prevents wire damage, maintains box integrity, and ensures safe installation.
Experience Level Indicators
Junior (0-2 years)
- Basic knockout removal techniques
- Understanding of common knockout sizes
- Proper tool usage
- Basic safety procedures
Mid (2-5 years)
- Advanced knockout planning
- Complex conduit routing
- Code compliance knowledge
- Proper sealing techniques
Senior (5+ years)
- Project planning and oversight
- Training and supervision
- Advanced troubleshooting
- Safety program implementation
Red Flags to Watch For
- Unfamiliarity with basic knockout sizes and applications
- Disregard for safety procedures when working with electrical panels
- Lack of knowledge about electrical codes related to knockouts
- Poor understanding of proper tool usage and maintenance
Related Terms
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