Yes, UF (Underground Feeder) cable is indeed UV rated, as it is specifically designed to be sunlight resistant. This makes it a suitable choice for a variety of outdoor and direct burial electrical applications.
UF cable's robust construction includes a durable outer jacket that is formulated to withstand the deteriorating effects of ultraviolet (UV) radiation from the sun. This crucial feature prevents the cable from becoming brittle, cracking, or prematurely failing when exposed to outdoor elements over extended periods.
Understanding Sunlight Resistance and UV Rating
When an electrical cable is described as "sunlight resistant," it signifies that its external jacket material has been tested and proven to maintain its structural integrity and protective qualities despite prolonged exposure to ultraviolet rays. For UF cable, this rating is essential because it is frequently used in environments where it will be above ground and directly exposed to sunlight before entering the ground or a structure.
Key characteristics that contribute to UF cable's outdoor suitability:
- Sunlight Resistance: The primary reason it is considered UV rated, ensuring longevity when exposed to the sun.
- Moisture Resistance: Designed for wet locations and direct burial, its jacket provides excellent protection against water.
- Durability: Built to withstand the rigors of outdoor environments and installation.
Applications of UF Cable
Given its UV resistance and other protective features, UF cable is an excellent solution for numerous outdoor wiring projects.
Common uses for UF cable include:
- Outdoor Lighting: Powering landscape lights, post lamps, and security lights.
- Detached Garages and Sheds: Providing electrical service to outbuildings.
- Pumps: Wiring for well pumps or pond pumps.
- Outdoor Receptacles: Installing weatherproof outlets for general outdoor use.
- Submersible Applications: Suitable for pumps where the cable might be submerged.
While Type UF wire is sunlight resistant and rated for direct burial installation, it is important to remember that, like other electrical cables, it must be protected from physical injury, especially in locations where it might be exposed to impact or abrasion.
UF Cable vs. NM Cable for Outdoor Use
It's crucial to distinguish UF cable from standard non-metallic (NM) cable, often referred to as Romex. While NM cable is prevalent for indoor wiring, it is not UV rated or sunlight resistant. Its outer jacket would quickly degrade when exposed to the sun, leading to insulation breakdown and potential electrical hazards.
Here's a quick comparison:
| Cable Type | UV Rated / Sunlight Resistant | Suitable for Direct Burial | Primary Use |
|---|---|---|---|
| UF Cable | Yes | Yes | Outdoor, Underground, Wet Locations |
| NM Cable | No | No | Indoor, Dry Locations (e.g., houses, offices) |
For any outdoor electrical installation, always consult local electrical codes and ensure the proper type of cable, like UF cable, is used to guarantee safety and compliance.
[[Electrical Cable Ratings]]
