Cable Ducting Colour Identification Chart
Underground Ducting is supplied in a range of colours for different applications. This is especially important when the cables are buried underground, as it makes them more identifiable. These colour codes are universal throughout the UK, and we sell ducting systems for the following uses and in the following colours:
| Colour | Image | Use | |
| Black |  |
Used for domestic mains electric cables underground, which carry low voltage electricity to homes and buildings. This cable ducting must be installed at least 450mm below the surface and have warning tape above it. | Buy Electrical Ducting |
| Blue |  |
Used for water pipes carrying drinking water to properties. The underground cable ducting must be installed at least 750mm below the surface to avoid frost damage. | Buy Water Pipe Ducting |
| Purple |  |
Used for motorway service cables, which carry National Roads Telecommunications Services such as emergency phones, speed cameras and traffic monitoring. This underground ducting must be installed at least 600mm below the surface and have warning tape above it. | Buy Motorway Ducting |
| Green |  |
Used for broadband, telephone and non-motorway CCTV cables, which carry communication signals and data. This cable ducting must be installed at least 350mm below the surface and have warning tape above it. | Buy CCTV Ducting |
| Yellow |  |
Used for service and mains gas cables, which carry natural gas to households and businesses. We supply perforated cable ducting, which allows gas to vent safely in case of a leak. This underground ducting must be installed at least 600mm below the surface and have warning tape above it. | Buy Gas Ducting |
| Orange |  |
Used for street lighting and traffic signalling cables, which carry electricity and control signals for lights and traffic devices. The ducting must be installed at least 450mm below the surface and have warning tape above it. | Buy Street Light Ducting |
| Grey |  |
Used for BT or telecommunications cables that carry phone and internet services. The ducting must be installed at least 350mm below the surface and have warning tape installed above it. The ducting must also comply with BT’s specifications. | Buy BT Ducting |
For more help deciding which ducting cable colour you need, please get in touch with our friendly and expert team. If you’re already clued up and are ready to shop, take a look at our range of ducting or you can explore our site for options like warning marker tape and many more!