How Long Does a Bare Copper Wiring Last?
Source: InterNACHI Life Expectancy Chart
100+ years
Estimated lifespan
100 years
Minimum
Category: Electrical
Lifespan estimates are based on industry data for typical residential installations with normal use and proper maintenance. Actual lifespan varies with installation quality, climate, usage intensity, and maintenance. These figures may differ from other sources.
Source: InterNACHI Standard Estimated Life Expectancy Chart for Homes
Last verified: 2026-03-28
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