No‑neutral dimmers trickle current through the load; verify bulb compatibility or add a bypass to eliminate flicker. Where renovating, pull a proper neutral; where not, prefer smart bulbs with physical remotes. Document wire colors clearly, and never mix neutrals from different circuits, protecting people and sensitive electronics.
Knob‑and‑tube often lacks grounding and can overheat under insulation. If intact, many jurisdictions allow it to remain, but avoid heavy loads and new splices. Use surface raceways for additions, and rely on wireless devices. Prioritize inspection, insurance requirements, and progressive upgrades that reduce risk without gutting beloved interiors.
A whole‑home surge protector calms spikes from storms and utility events. Add GFCI where water lives, and consider AFCI for arc faults. Place hubs and bridges on small UPS units. Label breakers, junctions, and automations so future pros understand choices, reducing confusion and costly callbacks years later.
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