What Is Cable?
Cable is an assembly of one or more insulated conductors enclosed within a shared jacket or protective covering. Cable carries electrical power or signals between equipment, devices, and connection points. Its construction may include a grounding conductor, shielding, or layers designed for indoor, outdoor, buried, or exposed installation conditions.
Quick Facts About Cable
Category
Electrical wiring component
Used for
Power and signal distribution
Common confusion
Cable is not conduit
Also called
Electrical cable
Often discussed with
Electrical Wiring Repair
Key Takeaways About Cable
- A shared jacket distinguishes cable from a single insulated wire.
- Cable selection depends on location, load, and installation conditions.
- Cable and conduit are not the same component.
How Cable Works
Cable carries electrical current or signals through insulated conductors. Each conductor has a conductive core that directs current, while insulation limits contact between conductors. A shared outer jacket holds the assembly together and helps protect it from the surrounding environment.
Related glossary terms: Conduit, Junction Box, Wire Size.
Cable construction varies by its intended use. A power cable may contain conductors for energized and neutral paths, plus a grounding path. Shielding can reduce signal interference in communication applications. Conduit provides a separate protective path for wires, while cable includes its conductors and outer covering in one manufactured assembly.
During electrical wiring repair, an electrician checks the cable jacket for cuts, heat damage, moisture exposure, and loose terminations. The electrician also verifies that the cable type fits the route and connected equipment. A damaged section may require repair or replacement after the circuit is made safe for inspection.
From the Electrician Pittsburgh team
When we inspect cable, we trace its route and check the jacket, terminations, supports, and connection points. Our team also compares the cable condition with the circuit layout and connected equipment. This helps us separate cable damage from problems at a device, junction box, or breaker.
Cable in Practice: A Real-World Example
A receptacle circuit may have cable running from a junction box to the receptacle box. During an electrical wiring repair, an electrician may find jacket damage near the box and replace the affected cable section after checking the connections.
Related Services
Related Terms
Conduit
Conduit is a protective pathway that houses and routes electrical conductors through walls, ceilings, floors, and…
Junction Box
Junction Box is an electrical enclosure that protects and contains wire connections where circuit conductors meet…
Wire Size
Wire Size is the classification of a conductor’s diameter and current-carrying capacity. The selected size depends…
Voltage Drop
Voltage Drop is the reduction in electrical pressure that occurs as current travels through a conductor…
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