What Is Non-Metallic Wire and What Is It Used For?
If you’ve ever opened an outlet box or watched an electrician work inside a wall, you’ve probably seen a bundle of wires wrapped in a soft plastic jacket. That is non-metallic wire, also commonly known as NM cable or Romex®. It’s the most common type of wiring used in modern homes — but many homeowners aren’t sure what it actually does.
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Single Core vs Multi Core Wire: Complete Comparison Guide
Single core wire contains one conductor inside the insulation, making it rigid and ideal for fixed installations like building wiring. Multi core wire bundles multiple insulated conductors together, offering flexibility for movable equipment and complex systems needing multiple circuits.
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4-Way Switch Wiring: The Complete Guide (Diagrams, Step-by-Step, and Troubleshooting)
4-way switch wiring allows you to control one light or a group of lights from three or more different locations—commonly used in long hallways, large rooms with multiple entrances, and staircases.
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3-Way Switch Wiring: Complete Guide with Diagrams
A 3-way switch lets you control one light from two different locations. It requires two 3-way switches connected by traveler wires, allowing either switch to turn the light on or off regardless of the other switch's position.Basic setup: Power → Switch 1 ↔ Traveler Wires ↔ Switch 2 → Light
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Types of Romex Wiring: Complete Guide to NM-B Cable Types & Uses
Romex wiring comes in multiple types based on wire gauge, number of conductors, and environmental rating. The most common types include 14/2, 12/2, 10/2, 14/3, 12/3, and 10/3 cables, each designed for specific electrical loads and applications.
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Can You Run Romex in Conduit? Code Requirements & Best Practices Explained
Quick Answer Yes, you CAN run Romex inside conduit according to the National Electrical Code. However, it's often not the most practical or cost-effective choice for most installations.
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Romex Wire Size Chart: Complete Ampacity & Sizing Guide
A Romex wire size chart shows the relationship between wire gauge 14, 12, 10, 8, 6 AWG, maximum ampacity, appropriate circuit breaker size, and typical applications—helping you select the correct wire size for safe, code-compliant electrical installations. Choosing the wrong wire size can lead to overheating, fire hazards, and code violations, while oversizing wastes money on unnecessarily expensive wire.
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What Is Romex Wiring? Complete Guide to NM-B Cable for Home Electrical
Romex wiring is a brand name for non-metallic sheathed cable NM-B that contains insulated electrical wires bundled together inside a flexible plastic jacket—it's the most common type of electrical wiring used inside walls and ceilings of residential homes throughout North America. When you open a wall in almost any modern house, the flat, beige or white cable you see running between studs is most likely Romex or a similar NM-B cable brand.
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What Is BX Cable Used For? Applications, Locations & When to Use It
BX cable (armored cable) is primarily used for exposed electrical wiring in residential and light commercial applications where physical protection is needed but full conduit isn't required. The flexible metal armor protects the insulated wires inside from physical damage, rodents, and minor moisture exposure, making it ideal for basement installations, garage wiring, and exposed runs along walls and ceilings where standard Romex (NM-B) cable isn't permitted by code.
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What Is Electrical Conduit? Types, Code Requirements & Installation Guide
Electrical conduit is a protective tube or raceway system that houses electrical wires, shielding them from physical damage, moisture, and environmental hazards while providing a neat, organized wiring installation. Unlike cable systems like Romex (NM-B) or BX that come with built-in protective sheathing, conduit is an empty pipe that you pull individual insulated wires through—offering superior protection and flexibility for future wiring changes.
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- Medium Voltage Cables – MV
- High Voltage Cables-HV
- Steel Wire Armored Cable (SWA Cable)
- XLPE Insulated Power Cables
- Mineral Insulated Cable (MICC/MI Cable)
- TPS Cable
- Control Cable
- Instrumentation Cable
- Coaxial Cable
- VFD Cable
- Computer Cable
- Electrical Wire
- MC Cable
- NM-B (Non-Metallic Sheathed) Copper Wire
- UF-B Underground Feeder Cable
- MTW Wire
- Prefabricated branch cables
- 4/0 Type W Cable
- Trunk Trailer ABS Cable
- SO Cable
- LSZH Cable
- Copper Ground Rods
- Copper Clad Steel Antenna Wire
- High Temperature Wire
- EV Automotive High Voltage Silicone Rubber Cable
- Submersible Pump Wire
- Floating cable
- LC to LC Fiber Patch Cables
- Flexible Cable
- Drag Chain Cables
- Silicone Rubber Low Temperature Resistant Cable
- All-Aluminum Conductors for Overhead Power Lines
- Aerial Bundled Cable (ABC Cable)
- Aerial Insulation Line (AIL)
- Bare Stranded Conductors
- Wind Farm Cables
- Overhead Service Drop Cable
- Concentric Service Cable
- Telephone Drop Cable
- Solar PV Cable
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