Choosing the right external Ethernet cable can be confusing. External, shielded, armoured and direct burial cables are all designed for outdoor use, but each is suited to different environments and installation methods.
This guide explains the main cable types and helps you choose the best option for your project.
External Cable (PE)
Standard external Ethernet cable uses a UV-resistant polyethylene (PE) outer jacket designed to withstand sunlight, rain and changing temperatures.
Best for: outdoor wall runs, external CCTV installations, garden offices using conduit and general outdoor networking.
External Shielded Cable (PE)
Shielded external cable includes additional foil or braided shielding to help reduce electromagnetic interference.
Best for: commercial environments, areas with electrical interference, outdoor industrial installations and network cabinets with nearby power cables.
External Armoured Cable (PE)
Armoured Ethernet cable includes Steel Wire Armour (SWA) beneath the outer jacket, providing extra protection against crushing, impact and accidental damage.
Best for: industrial sites, exposed outdoor installations, harsh environments and areas where cables may be stepped on or damaged.
External Direct Burial Cable
Direct burial cable is designed for underground installation. The outer jacket provides additional resistance to moisture and environmental conditions, allowing the cable to be buried without conduit in many applications.
Best for: garden offices, underground cable runs, outbuildings and external networks between buildings.
Which Cable Should I Choose?
| Outdoor wall | External Cable (PE) |
| Underground | Direct Burial Cable |
| Industrial environment | Armoured Cable (PE) |
| High electrical interference | Shielded External Cable |
| Garden office | Direct Burial or Armoured Cable |