Care will be taken to ensure that the maximum pulling tension of all the cables is not exceeded at any time. Cable should be free of any static load i. Any kind of dead weight on the cable shall be avoided. The cables shall be secured to the containment system using approved cable ties for horizontal runs and cable cleats for vertical runs.
All control cables will be installed at a minimum distance of mm from power cables unless otherwise agreed with consultant as per site conditions. At all time of pulling, mark both power and earth cables for pairing them on both sides of connection i. Cable shall be caped and sealed on both ends after installation until termination is done. Termination shall be done by using the approved termination materials that include glands, lugs and other accessories part of termination kit, by using proper crimping tools.
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Need an account? Click here to sign up. Download Free PDF. Abdul bari. A short summary of this paper. Although specific network extensions may be designed and constructed by third parties, the Company retains the responsibility for the design and construction standards of the distribution system. Since the guidance cannot cover every eventuality, the Company reserves the right to apply other criteria where necessary.
The installer is responsible for ensuring that they have all the relevant information required to undertake construction. Only installers who have the appropriate skills, training and experience shall use the data and guidance contained in this document.
This document provides guidance, however, it is the installers responsibility to ensure that safe systems of work are employed on site. Maximum pulling tensions. Minimum static and dynamic bending radii. Depth of cover. Positioning of marker tapes and protection tiles. Multiple cable spacing. The following sections detail the procedures which shall be followed when handling and installing power cables.
These procedures are based on safe working practices and are designed to minimise the risk of damage to the cable being installed. Cable bedding and surround materials Cables shall be bedded in and surrounded by appropriate materials. Marker Tape and Protection tiles Marker tape and protection tiles shall be Approved and shall be marked. Protection tiles shall be supplied and installed with a pin interlocking system and shall meet the impact requirements of BS Position the drum so that the pull from the drum to the trench is as straight as possible, in any case, the lead in angle of the cable to the trench shall not be greater than 30 o.
A lead in roller shall always be used to guide the cable into the trench. When pulling a cable into a duct the drum shall be positioned above the duct so that the cable leaves the drum and enters the duct in a smooth curve.
The drum shall be rotated by hand during the installation to ensure that the cable does not become tight between the drum and the duct mouth. Using drum jacks Check that the jacks and spindle are adequate for the size and weight of the cable drum, the gross weight of the cable drum will be marked on one flange.
Care should be taken when removing any metal strapping used to secure lagging, this strapping may be under considerable tension and can spring forcefully when cut. Make sure that no nails are left protruding from the drum flanges as these may result in injury when moving or handling the drum.
Ensure correct Disposal of any excess materials. The trench bottom shall be as level as possible and any change in gradient or level shall be made as gradually as possible.
The trench bottom shall be free of stones and the edges of the trench shall be cleared of any stones, tools or objects which may fall into the trench and damage the cable.
Ducts shall be cleaned out prior to cable installation by pulling through a cleaning pig of suitable diameter. Duct entries shall be fitted with split bell mouths to prevent damage to the cable and to the duct entry. Ensure the cable pulling winch is placed at a suitable position according to the length of the cable and the condition of the site. Placement of cable rollers every meters or as required will ensure that the cable will not be in contact with the tray.
The drum schedule will be used to identify the cable drum that will be used for cable pulling. Prior to cable cutting, an inspection of both ends shall take place to make sure there is sufficient length for proper dressing and end termination. When cable laying is completed, insulation test will take place according to attached format.
When more than one wires are installed in the same raceway, they should be pulled in the raceway at the same time. Use guide wires and similar equipment when wire pulling, to support the tension and avoid possible damage. Wherever the Engineer approves, use lubricant or wire pulling compound if necessary.
Ensure that the pulling compound used is chemically compatible with any insulations or conductors it touches. Following installation, the Wires Insulation Test should be conducted according to the attached format. Quality control Engineer accompanied by the site supervisor will see that material installation follows the Shop drawing, the specifications outlined in the contract as well as the approved submittals.
The consultant will receive a work inspection report WIR after the completion of the installation. All works shall comply with safety procedure or instruction set out in project safety plan and Municipality rules and regulations. What method or procedure do you use in installing cables and wires? Do you follow the same method statement as above? You should as well check your.
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