Provision and installation of ducts (including Road Crossing ducts)
You are responsible for the provision and installation of all ducts as indicated:
on the final proposal plan where it is provided with the Quote or
on the final proposal plan provided following detailed design or
as per a design submission agreed with UK Power Networks.
Ducts are to be of a size and type approved by UK Power Networks relevant to the cable type, operating voltage of the circuit and environment/location. Additional information is available in the G81 Library including: standard ECS 02-0019 Installation of underground cables - LV to 132kV and standard EAS 02-0000 equipment list - cables and joints.
You are responsible for installing a suitable, non-corrosive draw cord/rope to facilitate installation of the service or mains cable.
You are responsible for ensuring that any ducts are checked and cleared of all obstructions before UK Power Networks are asked to pull cables through the ducting. You should use duct-clearing mandrels and seal the ducts as appropriate, after laying the ducts. Before drawing cables through longer sections of duct, You may be required to prove the duct is fit for purpose by drawing a short length of cable through the section, and examining the cable for damage.
Ducts installed in concrete or through a void
If any section of the cable is to be encased in concrete or not buried (e.g. in an open area, under flooring or passing through an open basement), You will be required to install a steel duct in accordance with standard ECS 02-0019. In these instances, the steel ducts must be a minimum 150mm internal diameter welded steel tube (unless otherwise agreed with or specified by UK Power Networks). The steel duct must comply with standard BS EN 10255. The internal weld must be smooth to the touch throughout. All joints to be screwed and socketed with ends of tubes finished smooth to the touch. Ducts to be medium duty in red oxide or self-colour finish.
Hockey sticks
You are responsible for the connection of any service ducts to service “hockey sticks” or, in agreement with UK Power Networks, temporary access chambers.
Any Hockey sticks must be supplied and installed by You. Please refer to standard EDS 08-2110 for associated drawings.
Street furniture ducts
Ducts for street furniture must:
Comply with standard ENA TS 12-24.
Be laid clear of any obstruction.
Be terminated in an easy bend at the base of the street furniture.
Location of ducts
You must ensure that the precise location of all ducts are accurately recorded and permanently marked on-site.
If ducts are not installed in accordance with UK Power Networks specification, You will be required to rectify the situation before work commences.
V2_April2024