Good-quality electrical cable is a long-life product. Installed correctly and not overloaded, quality house wiring can last several decades — and advanced e-beam cross-linked wiring such as APAR Fire Protekt is engineered for an exceptionally long service life.
Lifespan depends on how hard the cable is worked and its environment. Continuous overloading, heat, moisture, UV exposure, rodent damage and physical stress all shorten it. Under-sized cable that runs hot ages fastest — another reason to size correctly (see choosing the right cable).
Consider inspection or replacement when you notice warning signs: cracked, brittle or discoloured insulation, a burning smell or warm switches/sockets, frequent tripping, flickering, or visibly damaged cable. Wiring more than a few decades old, or installed before modern fire-safety grades, is also worth reviewing — especially during a renovation.
When you do rewire, upgrading to low-smoke HR-FR-LSH grade is a sensible safety improvement. Explore APAR's house wires and cables, and have any electrical work assessed by a licensed electrician.