The answer to 'lifespan of electrical wiring' is that the typical lifespan of electrical wiring in a home is 30-50 years, depending on the quality of the wiring and how well it has been maintained. Properly installed and well-maintained electrical wiring can last for decades, but older wiring or wiring that has been subjected to damage or wear and tear may need to be replaced sooner.
The lifespan of electrical wiring can be affected by factors such as the type of wiring used, the quality of the installation, exposure to moisture or pests, and the overall condition of the wiring over time. It's important for homeowners to have their electrical wiring inspected regularly by a licensed electrician to ensure it is still safe and functioning properly.