The cosmetic practice of hiding wires and pipes in walls makes maintenance and improvement a major hassle. The conservative tactic—at higher initial cost—of installing over-capacity electrical feeders and breakers, oversize chases, and an apparent excess of outlets is nearly always rewarded. The general rule is: oversize your components. Another adaptive trick—both for incremental and radical change—is to keep wiring accessible in what’s called wire mold on the walls or in cable troughs hanging from ceilings.
