Ask Bob Electrical What is the difference between aluminum and copper wiring?
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What is the difference between aluminum and copper wiring?

Copper is more conductive, durable, and safer than aluminum. Aluminum wiring was widely used in the 1960s and 1970s due to copper shortages but is now known to be a fire risk. Aluminum expands and contracts more with temperature changes, causing connections to loosen and overheat. Homes with aluminum wiring may need special connectors or full rewiring for safety.

Why It Matters

If your home has aluminum wiring built between 1965 and 1973, it needs special attention. Upgrading or installing approved connectors reduces fire risk significantly.

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