Backstab Connection
A push-in wire connection on the back of budget outlets and switches that grips the wire with a small spring clip. Fast to install, and the most common loose-connection failure point in modern homes.
Backstabs exist because they save builders seconds per device, thousands of times per subdivision. The spring clip contacts a sliver of the wire's surface, and decades of heating-cooling cycles plus plug insertions work it loose. The result is the signature intermittent fault: an outlet that works when the plug is wiggled, lights that flicker when someone walks across the floor, warmth at a cover plate.
Electricians diagnose them constantly and fix them simply: move the wire to the device's screw terminals (or replace the worn device, since backstabbed outlets are usually the budget grade). A home with one failed backstab has hundreds of siblings, which is an argument for fixing them opportunistically rather than all at once.
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- Romex (NM Cable) : The standard cable inside modern American homes: two or three insulated conductors plus a bare ground, wrapped in a plastic sheath.
- Wire Gauge (AWG) : The thickness of a wire, measured in American Wire Gauge.
- Conduit : Protective tubing (metal or PVC) that individual wires are pulled through, used where cable would be exposed to damage, weather or burial: garages, outdoors, underground runs.
- Junction Box : An enclosed box where wires are spliced together.