Is Romex wiring safe to install, yes, Romex NM-B wiring is safe to install when installed correctly per National Electrical Code, by qualified person, with proper gauge, connections, and protection, as Romex is approved wiring method used in millions of homes safely for decades, with safety depending on correct installation. Romex is safe when installed with proper supports, not damaged, not overloaded, with correct gauge for circuit amperage, 14 gauge for 15 amp, 12 gauge for 20 amp, with connections in junction boxes, with proper grounding, and protected from physical damage, with staples not too tight, and not in wet locations. Risks arise when Romex installed incorrectly, such as overloaded circuits, loose connections, damaged insulation, or run in prohibited locations like outdoors or in conduit filled with water. DIY installation can be unsafe if person lacks knowledge of code, as improper installation can cause fire and shock hazards, so recommended to have licensed electrician install or inspect. So is Romex wiring safe to install, yes, it is safe and code approved for residential indoor wiring when installed per code, with proper handling, with millions of homes wired with Romex safely, with safety ensured by following NEC requirements for support, protection, box fill, grounding, and not exceeding ampacity, with AFCI and GFCI protection enhancing safety, making Romex safe method when done correctly.
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