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Why Choosing the Right CAT6A Ethernet Cable Matters
CAT6A ethernet cables represent the gold standard for modern networking, delivering 10 Gigabit speeds over distances up to 100 metres. Whether you're setting up a home office, upgrading your business network, or installing outdoor connectivity, selecting the right CAT6A cable is crucial for optimal performance and longevity.
Unlike standard CAT6 cables, CAT6A (Category 6 Augmented) cables feature improved shielding and construction that eliminates crosstalk and supports higher frequencies up to 500MHz. This makes them future-proof investments for demanding applications like 4K video streaming, large file transfers, and high-density network environments.
Key Factors to Consider When Buying CAT6A Cables
Cable Construction and Shielding
CAT6A cables come in various constructions, each suited to different environments. Shielded cables (S/FTP) offer superior protection against electromagnetic interference, making them ideal for areas with electrical equipment or wireless devices. The shielding also provides better performance consistency over longer runs.
Indoor vs Outdoor Applications
Outdoor CAT6A cables feature UV-resistant jackets and weatherproof construction. For underground installations, direct burial cables include gel-filled cores that prevent moisture ingress and provide additional protection against environmental factors.
Cable Length Requirements
Consider your total cable requirements carefully. Bulk reels of 50m, 100m, or 305m offer better value for larger installations, whilst shorter lengths reduce waste for smaller projects. Remember that CAT6A maintains full 10Gb performance over the entire 100-metre specification.
Copper Quality
All professional-grade CAT6A cables should use pure copper conductors rather than copper-clad aluminium (CCA). Copper provides better conductivity, lower resistance, and superior long-term reliability.
Top CAT6A Ethernet Cable Picks
Direct Burial CAT6A Cable - 305m Reel
£321.84Available in 2 lengths from £102.82 — See all variations
Our best-selling professional-grade solution for large outdoor installations. Features gel-filled construction for ultimate moisture protection and direct burial capability. Perfect for campus networks, industrial sites, and extensive residential projects.
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Shielded CAT6A Outdoor Cable - 305m
£234.48Available in 2 lengths from £43.68 — See all variations
Premium shielded construction with S/FTP design provides excellent EMI protection. Ideal for outdoor runs near power lines or in electrically noisy environments. UV-resistant jacket ensures long-term durability.
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Direct Burial CAT6A Cable - 100m Reel
£102.82Available in 2 lengths from £102.82 — See all variations
Mid-sized reel perfect for medium installations. Gel-filled design prevents moisture damage whilst maintaining flexibility for easier installation. Excellent choice for garden offices and outbuildings.
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Shielded CAT6A Cable - 100m White
£70.44Available in 2 lengths from £43.68 — See all variations
White-jacketed shielded cable ideal for installations where aesthetics matter. S/FTP shielding provides reliable performance in challenging environments whilst the white colour blends with building exteriors.
View ProductCAT6A Cable Comparison Table
| Product | Length | Type | Price | Price per Metre | Best For |
|---|---|---|---|---|---|
| Direct Burial CAT6A Gel | 305m | Direct Burial | £231.16 | £0.76 | Large underground installations |
| Shielded CAT6A S/FTP | 305m | Outdoor Shielded | £188.03 | £0.62 | Long outdoor runs with EMI protection |
| Direct Burial CAT6A Gel | 100m | Direct Burial | £81.64 | £0.82 | Medium underground projects |
| Shielded CAT6A White | 100m | Outdoor Shielded | £75.88 | £0.76 | Aesthetic outdoor installations |
| Shielded CAT6A Black | 50m | Outdoor Shielded | £36.11 | £0.72 | Small to medium outdoor runs |
Installation Tips for CAT6A Cables
Planning Your Cable Route
Before installation, map out your cable route to minimise length whilst avoiding potential interference sources. Keep CAT6A cables at least 30cm away from power cables and fluorescent lighting to prevent electromagnetic interference.
Proper Termination Techniques
CAT6A cables require precise termination to maintain their performance characteristics. Use quality RJ45 connectors rated for CAT6A and follow the T568B wiring standard for consistency. Avoid untwisting wire pairs more than 13mm from the connector.
Pro Tip: When pulling cables through conduits, use proper cable lubricant to prevent jacket damage. Never exceed the cable's minimum bend radius, which is typically 4 times the cable diameter for CAT6A.
Testing and Certification
After installation, test your CAT6A cables with a proper network tester to verify they meet Category 6A performance standards. This ensures you'll achieve the full 10 Gigabit performance the cables are designed for.
Common CAT6A Cable Buying Mistakes to Avoid
Choosing CCA Over Pure Copper
Copper-clad aluminium (CCA) cables may seem cost-effective but offer inferior performance and reliability. Always specify pure copper conductors for professional installations, especially for Power over Ethernet (PoE) applications.
Warning: CCA cables can cause voltage drop issues with PoE devices and may not meet fire safety standards in commercial buildings.
Underestimating Length Requirements
Account for vertical runs, routing around obstacles, and service loops when calculating cable length. It's better to have slightly more cable than to come up short during installation.
Ignoring Environmental Factors
Indoor-rated cables will degrade quickly when exposed to UV light and moisture. Always use properly rated outdoor or direct burial cables for external installations, even if they're in conduit.
Mixing Cable Categories
Your network is only as fast as its weakest link. Don't mix CAT6A cables with lower-category patch leads or connectors, as this will limit your entire network to the lowest common denominator.
Frequently Asked Questions
What's the difference between CAT6A and CAT6 cables?
CAT6A cables support 10 Gigabit speeds over the full 100-metre distance, whilst CAT6 is limited to 55 metres for 10Gb applications. CAT6A also features improved shielding and operates at frequencies up to 500MHz compared to CAT6's 250MHz.
Do I need shielded CAT6A cables for home use?
Shielded cables aren't always necessary for residential applications, but they provide better performance in environments with Wi-Fi routers, microwaves, or other electronic devices. They're particularly beneficial for longer cable runs or areas with multiple wireless networks.
Can I use outdoor CAT6A cables indoors?
Whilst outdoor cables will function indoors, they may not meet building fire safety codes. Outdoor cables typically have different jacket materials that may not have the required flame-retardant properties for indoor use. Always check local building regulations.
How long will CAT6A cables last outdoors?
Quality outdoor CAT6A cables with UV-resistant jackets typically last 15-20 years in direct sunlight. Direct burial cables with gel filling can last even longer underground, often exceeding 25 years when properly installed.