Can I use NM-B wire outdoors?

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  Camilo Giraldo

  7/8/25, 4:33 PM

  Hello, I have a question:

  Can I use NM-B wire outdoors?

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• SV

  Sala Vudin

  7/8/25, 4:38 PM

  No, It's not suitable for outdoors

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• 

  Garrie Nassau

  7/14/25, 12:55 PM

  Hello, and thank you for a great question. The NM-B (non-metallic sheathed) wire is not rated for outdoor or wet locations. If you’re looking for an outdoor cable, you can use UF-B or a suitable outdoor-rated cable instead. Check this recommendation:

  
  Underground Feeder Cable Uf-B Copper 600v: is designed for direct burial in the ground without conduit. It’s commonly used to supply power to outdoor lighting, garages, sheds, pumps, and other outbuildings. The cable is resistant to moisture, sunlight, and physical damage, making it ideal for underground and exterior residential wiring applications. 

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