How Long Does Romex Wire Last

How long does Romex wiring last? Non-metallic (Romex) wiring can last 70 years or longer. The outer protective sheathing resists breakdown due to age. Commonly, damage to Romex wiring is caused by animals or overheating, which requires a partial wiring replacement.

Does Romex wire go bad?

Although the cable sheathing and insulation on wiring eventually deteriorates, it takes a long time. The wiring that is currently manufactured is estimated to have an 80 to 100 year lifespan.

Can you use old Romex?

Old Romex is excellent to be used for tying ladder onto racks & for temporary lighting for construction, otherwise it is dumpster fodder.