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Why the Cat 6 Cable Brand You Choose Actually Matters
Not all Cat 6 cable is built the same, even though it all looks similar on the reel. The brand behind a cable tells you a lot about the conductor material, the fire-safety rating of the jacket, and whether it's suitable for a domestic install or a commercial building sign-off. Choosing the best Cat 6 cable brand for your job means matching copper quality, CPR fire class and warranty support to where the cable is actually going — inside a wall, under a floor, outdoors, or in a rack cupboard.
Below we compare the five Cat 6 cable brands and product ranges stocked at Kenable — Excel, XeLAN, SFX, our own Kenable-branded indoor reel, and a budget Mercury CCA option — so you can pick the right one first time.
Factors to Consider When Choosing a Cat 6 Cable Brand
- Conductor material: solid bare copper (BC) carries more current and signal more reliably than copper-clad aluminium (CCA). Copper is essential for PoE (Power over Ethernet), long runs, and any install you don't want to redo in five years.
- CPR Euroclass rating: under UK/EU Construction Products Regulation, cables installed in buildings must carry a fire performance class — typically Eca (basic), Dca (better fire/smoke performance), or B2ca (highest class commonly available for LAN cable, required in many commercial and public buildings).
- LSOH/LSZH jacket: Low Smoke Zero Halogen jackets reduce toxic fume emission in a fire, important for offices, schools and public spaces.
- Indoor vs outdoor construction: outdoor cable needs a UV-stable, water-blocking PE jacket rather than standard PVC.
- Warranty and certification: some manufacturers offer extended system warranties when the cable is installed by an approved partner using their full connectivity range.
- Reel size and format: 305m reels suit installers doing multiple runs; shorter patch leads suit patching in cabinets or connecting a single device.
Top Picks: Cat 6 Cable Brands Compared
Excel — The Premium Installer Brand
Excel is a long-established UK structured cabling brand favoured by professional installers. Its Cat 6 U/UTP cable uses solid bare copper conductors and an LSOH jacket rated to Euroclass Dca — a step up in fire/smoke performance from standard Eca cable, making it suitable for most commercial and larger residential installs. When installed by an Excel-approved partner using Excel's full connectivity system (patch panels, outlets, patch leads), the cable qualifies for Excel's 25-year system warranty, which is a significant reassurance on larger jobs where callbacks are expensive.
Excel Copper Cat6 Network Cable U/UTP Low Smoke LSOH Euroclass Dca 305m Violet
£181.10Solid bare copper Cat6 U/UTP, LSOH jacket, Euroclass Dca fire rating. 305m reel, ideal for professional installers who want warranty-backed structured cabling.
View Product
Excel Cat6 Patch Lead U/UTP Unshielded LSOH Blade Booted 1m Blue
£2.81Available in 2 lengths and 3 colours from £2.81 — See all variations
Factory-terminated Excel patch lead with blade boots to protect clips in dense patch panels. 1m length shown; matches Excel's cable range for a consistent system.
View ProductBest for: professional installers and commercial fit-outs where a certified, warranty-backed system matters.
XeLAN — Highest Fire Class for Commercial & Public Buildings
XeLAN's Cat 6 U/UTP cable is built with solid copper conductors and an LSOH jacket rated to Euroclass B2ca — the highest CPR fire class commonly available in Cat 6 cable, ahead of Dca and Eca. This makes it the right choice for schools, hospitals, high-rise residential blocks and other public buildings where building regulations demand the best available reaction-to-fire performance.
XeLAN Copper Cat6 Network Cable U/UTP Low Smoke LSOH EPR:B2ca 305m Violet
£167.21Solid copper Cat6 U/UTP with LSOH jacket rated to Euroclass B2ca, the highest fire class available in standard Cat 6 cable. 305m reel.
View ProductBest for: commercial and public buildings where B2ca fire rating is specified or preferred.
SFX — Built for Outdoor Runs
SFX makes cable specifically engineered for exterior use — its Cat 6 reel uses a PE (polyethylene) jacket rather than PVC or LSOH, giving it the UV resistance and water resistance needed to survive being run between buildings, along fences, or underground in ducting. It still uses copper conductors (24AWG), so you're not sacrificing signal performance for weatherproofing.
SFX External CAT6 Copper Ethernet Network Cable Reel PE 24AWG UTP 305m Black
£153.50Weatherproof PE jacket, 24AWG solid copper conductors, black UV-stable finish. 305m reel for outdoor and duct runs — our top-selling outdoor Cat 6 cable.
View ProductBest for: outdoor runs, garden offices, sheds, CCTV backhaul and building-to-building links.
Kenable Own-Brand — Best Value Full Copper
Our own Kenable-branded indoor Cat 6 reel uses 23AWG solid bare copper conductors in a standard PVC jacket. It doesn't carry the CPR fire-class certification of Excel or XeLAN, so it's intended for general domestic and small office cabling rather than jobs requiring building-regulation compliance documentation — but because it's genuine solid copper, it performs properly for gigabit speeds and PoE devices, at a more competitive price than the certified brands.
Indoor CAT6 UTP 23AWG COPPER Ethernet PVC Network Cable Reel BOX 305m Grey
£152.44Available in 3 lengths from £27.49 — See all variations
23AWG solid bare copper, PVC jacket, supplied in a pull box for easy feeding. 305m reel — full copper performance without the price tag of a certified brand.
View ProductBest for: home networks, home offices, and small business installs on a budget who still want real copper.
Mercury — Budget CCA, With Caveats
The Mercury-style CAT6-CCA reel uses copper-clad aluminium conductors rather than solid copper. CCA is cheaper to manufacture and lighter, but it has higher electrical resistance than pure copper, which means more signal attenuation over distance and less capacity to carry current safely. In practice this makes CCA cable unsuitable for Power over Ethernet (PoE) devices such as PoE cameras, access points and PoE phones, and it's more likely to underperform on runs approaching the 90m Cat 6 limit. It's a reasonable choice only for short, low-power, data-only runs where budget is the priority.
Indoor Ethernet Cable Reel Network LAN U/UTP CAT6-CCA GIGABIT Solid 305m Grey
£68.59Copper-clad aluminium (CCA) conductors, PVC jacket, 305m reel. The cheapest option here — fine for short data-only runs, not recommended for PoE or long-distance installs.
View ProductBest for: tight budgets, short patch runs, and non-PoE data-only connections.
Pro tip: if you're unsure whether a run needs PoE in future (e.g. for a Wi-Fi access point or IP camera), always fit solid copper cable — retrofitting is far more expensive than paying the small premium upfront.
Comparison Table: Cat 6 Cable Brands at a Glance
| Brand | Product | Conductor | Jacket / CPR Class | Best For | Price |
|---|---|---|---|---|---|
| Excel | Cat6 U/UTP 305m reel | Solid bare copper | LSOH, Euroclass Dca | Professional installs, 25-year system warranty | £181.10 |
| Excel | Cat6 Patch Lead 1m | Stranded bare copper | LSOH, blade booted | Patching within an Excel system | £2.81 |
| XeLAN | Cat6 U/UTP 305m reel | Solid copper | LSOH, Euroclass B2ca | Commercial/public buildings needing top fire class | £167.21 |
| SFX | External Cat6 305m reel | Solid copper, 24AWG | PE (outdoor/UV-stable) | Outdoor and duct runs | £153.50 |
| Kenable | Indoor Cat6 305m reel | Solid bare copper, 23AWG | Standard PVC | Best value full-copper indoor install | £152.44 |
| Mercury | Cat6-CCA 305m reel | Copper-clad aluminium | Standard PVC | Budget, short data-only runs | £68.59 |
Most of these cables are also available in other lengths and pack sizes — check individual product pages for shorter reels or bulk box options if 305m is more than you need.
Installation Tips
- Keep individual cable runs under 90 metres for full Cat 6 gigabit performance, and factor in patch leads at each end within that limit.
- Avoid running Ethernet cable tightly alongside mains electrical cable; where they must cross, cross at 90 degrees to reduce interference.
- Don't exceed the cable's minimum bend radius (roughly four times the cable diameter) — kinking can permanently damage the internal twisted pairs.
- For outdoor runs, use SFX's PE-jacketed cable rather than pulling indoor PVC/LSOH cable through conduit exposed to the weather.
- If the job requires CPR compliance documentation (common in commercial fit-outs), specify Excel Dca or XeLAN B2ca rather than an uncertified reel.
Warning: never use CCA cable for PoE-powered devices such as PoE security cameras, VoIP phones or wireless access points — the higher resistance can cause voltage drop, overheating, and unreliable power delivery over distance.
Common Mistakes to Avoid
- Choosing CCA cable to save money on a PoE install. The saving is quickly lost in flaky devices and reduced power delivery — use solid copper for anything powered over the cable.
- Ignoring CPR fire class requirements. Commercial and public buildings may legally require Dca or B2ca cable — check building regulations before ordering an uncertified reel.
- Using indoor cable outdoors. Standard PVC or LSOH jackets aren't UV or water-resistant; use an outdoor-rated cable like SFX's PE reel for anything outside.
- Mixing incompatible components on a warranty install. If you want Excel's 25-year system warranty, the full connectivity chain (cable, patch panel, outlets) generally needs to be Excel and fitted by an approved partner.
- Buying a full 305m reel for a job needing 20 metres. Check whether shorter lengths or patch leads are available before committing to a big box.
Frequently Asked Questions
What's the difference between copper and CCA Cat 6 cable?
Solid copper conductors carry current and signal more efficiently and with lower resistance than copper-clad aluminium (CCA). Copper cable is recommended for PoE devices and longer runs; CCA is only suitable for short, low-power, data-only connections where budget is the main concern.
Do I need Dca or B2ca rated Cat 6 cable for my home?
For a typical domestic install, standard PVC-jacketed cable (like the Kenable own-brand reel) is usually fine. CPR fire classes such as Dca (Excel) and B2ca (XeLAN) become relevant mainly in commercial, public, or larger multi-occupancy buildings where building regulations specify a minimum fire performance class.
Can I use indoor Cat 6 cable outdoors if I run it through conduit?
It's not recommended. Indoor PVC or LSOH jackets aren't designed to handle UV exposure, temperature swings or moisture ingress over time, even inside conduit. A purpose-built outdoor cable such as SFX's PE-jacketed Cat 6 reel is a safer long-term choice.
Which Cat 6 cable brand offers a warranty?
Excel offers a 25-year system warranty, but this typically requires the entire cabling system — cable, patch panels and outlets — to be genuine Excel components installed by an Excel-approved partner. Other brands in this guide don't carry an equivalent extended system warranty.