Experts warn against using standard Ethernet cables outdoors
Standard indoor Ethernet cables, despite rugged-sounding category names like Cat5e and Cat6, are not built for outdoor use because their PVC jackets degrade under sunlight, heat and rain, exposing internal wiring. Guidance highlights that outdoor runs should use cables rated for exterior exposure, such as direct-burial cables for underground installation, paired with surge protection at both ends. Outdoor-rated fiber optic cable is offered as an alternative that avoids some risks tied to copper conductors.
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As more homeowners install outdoor security cameras and extend networks to yards or porches, improper cabling could lead to premature failures, connectivity issues, or safety hazards from lightning exposure. The guidance suggests that choosing properly rated materials and surge protection could prevent costly repairs or equipment damage down the line.
- Standard indoor Ethernet cables degrade outdoors due to UV, heat and moisture.
- Direct-burial or outdoor-rated cables, plus surge protectors, are recommended for exterior runs.
- Outdoor-rated fiber optic cable is a copper-free alternative, though connected equipment still faces exposure risks.
Outdoor Direct Burial Cat6 Ethernet Cable — If you're running Ethernet outside to a security camera or yard device, a direct-burial-rated Cat6 cable is built to resist UV, moisture, and temperature swings that destroy standard indoor cables. It's the exact fix the article recommends for safely extending your network outdoors without cracking or signal degradation.
See Outdoor Direct Burial Cat6 Ethernet Cable on Amazon → Affiliate link — we may earn a commission on purchases, at no extra cost to you. Product picked by AI based on this article; it is not a tested recommendation.Source: engadget.com — Thomas Godwin, 2026-10-26
Published there as: “Can you run regular Ethernet cables outside?”
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