Key specifications are:Voltage Rating: 1 kV to 35 kVConductor Material: Copper or aluminumInsulation Material: XLPE or EPRShielding: Metal tape or wire braid to prevent electromagnetic interference.
What are the minimum requirements for laying a cable up to a pole?
Where joint holes have been dug and exposed the cables the minimum requirement shall be that the joint hole shall signed and guarded as per ST: HA14D. Where the cable has been laid up to a pole, the minimum requirement shall be that the cable and pole shall signed and guarded as per ST: HS14D.
storage and cutting. The temperature range of the cable is of great importance for both the user and fitter. After all the cable is meant to function equally well in cold and hot temperatures. It is particularly during the fitting process that powerful mechanical forces act on the cable.
How deep should a cable duct be buried?
Once the cable or duct has been laid onto the bedding a further layer of crushed limestone dust or crushed granite dust shall be applied, this shall be for a depth of 75mm above the cable or duct. The rollers are necessary to avoid abrasion of the cable by keeping it clear of the ground and to reduce friction during pulling.
The cable stocking will also have a SWL equivalent to the maximum pulling tension of the cable. After the end of the cable has been freed from the drum the cable stocking should be fitted. Table 4.2.1 gives guidance on maximum pulling tensions and diameters of cables most commonly used in WPD. Pulling tension safe limit 240mm2'H' type Cu.
Special attention should be paid to the position of rollers in the trench at points where a change of direction is made. The positioning of the rollers should be such that the cable is not bent around too sharp a radius. Refer to table 4.1.5 for details of minimum bending radius for cables. 630mm2 Cu. Single core EPR 300mm2 Cu. Single core EPR
Any company contracted to undertake the work has sole responsibility for the pulling in and laying of the cable as well as the installation of cable sleeves or branch joints. We accept no liability for any damage which occurs during pulling in or sleeve installation despite or as a result of following these instructions.