Junction Box

An enclosed box where wires are spliced together. Every splice in a home must live inside an accessible, covered box: hidden splices are a serious fire hazard and a code violation.

The rule is absolute and exists because splices fail: a connection that loosens over time arcs, heats and can ignite. Inside a covered metal or plastic box, that failure is contained and findable. Buried in a wall or ceiling under drywall, it is neither. "Accessible" means you can reach the cover without demolition: attics and basements count, behind the new kitchen tile does not.

Junction boxes are a staple of inspection reports on older homes: open splices in attics, taped bundles in crawl spaces, boxes with missing covers. Each one is a quick fix individually, and collectively they map how much amateur work the house has absorbed.

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