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Amazon.com: UltraPro Outdoor Extension Cord, 15 Ft, Heavy Duty Extension Cord, Double Insulated, Grounded, 16 Gauge, 3 Prong Extension Cords, General Purpose Long Extension Cord, UL Listed, Black, 36824 : Everything Else
![Hi, What is this blue green stuff on my extension cord plug? Can I clean it off and continue using it or do I need to replace it? Thanks! : r/electricians Hi, What is this blue green stuff on my extension cord plug? Can I clean it off and continue using it or do I need to replace it? Thanks! : r/electricians](https://preview.redd.it/kgkq6xymlb641.jpg?auto=webp&s=d67ea9e1008d875d915c241ddd697c6644700c8b)
Hi, What is this blue green stuff on my extension cord plug? Can I clean it off and continue using it or do I need to replace it? Thanks! : r/electricians
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