The answer to 'difference between aluminum wiring and copper wiring' is that copper wiring is the more common and recommended choice for residential electrical systems. Copper is more durable, has better conductivity, and is less prone to issues like corrosion and overheating compared to aluminum wiring. Aluminum wiring was used in some homes built in the 1960s-70s, but it has since been found to present a higher fire risk and is no longer recommended for new construction.
Copper wiring is generally more expensive upfront, but its longer lifespan and reliability make it the better long-term investment for homeowners. It's also easier to work with and connect devices to. Aluminum wiring requires special connectors and precautions to prevent issues like wire expansion and connection problems. For these reasons, most electricians and building codes strongly favor copper wiring for residential applications.