Are all Ethernet cables the same?

No. Ethernet cables are grouped into performance categories (e.g., Cat5e, Cat6, Cat6a) with different bandwidth and noise immunity. Shielding (U/UTP, F/UTP, S/FTP) and construction vary. For most office runs, Cat6 or Cat6a is recommended; for long backbones or higher-than-10 Gb/s over distance, use fibre.

Is Cat7 or Cat8 better than Cat6a for office cabling?

For typical office cabling, Cat6a is recommended. It supports 10 Gb/s up to 100 metres using standard RJ45 components with good PoE headroom. Cat7/7a (ISO/IEC Class F/FA) often expects GG45/TERA connectors rather than RJ45. Cat8 is designed for short (around 30 m) data-centre links at 25/40 Gb/s and is not intended for horizontal office runs.

Which cable supports 10 Gb/s up to 100 metres?

Cat6a supports 10 Gb/s up to 100 metres when properly installed and tested. Cat6 may support 10 Gb/s only on shorter channels (often quoted up to ~55 metres).

Do I need shielded Ethernet cable?

Use shielded cable (F/UTP or S/FTP) in higher-EMI environments, with heavy PoE loads or dense bundling. In low-EMI office environments with lighter PoE and modest bundling, U/UTP is usually sufficient.

When should I use fibre instead of copper Ethernet?

Use fibre for backbone/uplinks between rooms or floors, runs exceeding 100 metres, or for throughput requirements beyond 10 Gb/s over distance. Fibre provides lower latency and better resilience for long runs.

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Is Cat7 or Cat8 a better choice than Cat6a?

Short answer: For office and general building cabling, Cat6a is the recommended standard. It supports 10 Gb/s up to 100 m with better PoE headroom and broad RJ45 compatibility.

Cat7/7a: ISO/IEC classes (F/FA) typically expect GG45/TERA connectors, not standard RJ45. Many retail “Cat7” patch leads are just heavily shielded Cat6 variants.
Cat8: Designed for short data-centre links (around 30 m) at 25/40 Gb/s. It’s shielded-only and not intended for horizontal office runs.
Future-proofing: If you’re planning 7+ years or heavy PoE/EMI/bundling, Cat6a is usually the sweet spot. For long backbones or >10 Gb/s across floors, go fibre.

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Birmingham

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Bromsgrove

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