Cable Pulling & Laying | Sealing Cables Whilst Installing | Part 1
Published 23 Sep 2021
Cable Pulling & Installation
Stephen Harrison – Training & Technical Manager at Current Training Service Pty Ltd
Pulling cables is an art, with bending radii, side wall pressures to consider whilst pulling the cables and loadings of cables, the list goes on. All cable pulling data is available from the cable manufacturer on these values, before pulling cables please check and verify the cable pulling calculations and values.
Water is devastating to cables and when a cable does start to let water in, it can diminish the life span of that cable causing so many problems. Some of the problems maybe treeing and or oxidisation etc.
How many times do people pull cables into installations without correctly sealing the cable ends and finding out that water has penetrated the cables whilst under installation?
End caps are designed to seal the cable either whilst being installed or being left for periods of time awaiting terminating or jointing.
The humble end cap will not work alone on the cable a few things have to be done before it is effective and seals your cables;
- Select the correct end cap for the installation, either storage, pulling. (There are several types)
- When the selection has been made, prepare the cable outer sheath. This will require abrading and cleaning any mud off, so when mastic, glue or hot melt adhesive attaches the outer sheath it creates a seal.
- The cap, depending on the manufacturer may need mastic under for extra sealing especially when installing the cable and leaving it for a period buried or in a pit in water, or 2 caps mastic and a heat shrink sleeve maybe required.
In Part 2, I will explain the different types of cable end caps which have been designed for pulling cables and storage.
➡ Read part 2 here Cable End Caps | Cable Pulling & Storage | Part 2
Cable Pulling Cable Laying Equipment
Further Reading
Cable Pulling Calculation Example From Brugg Cables
Secure Spiking of Underground LV & HV Cables | Cable Spiking & Cutting Tools
Cable Pulling & Cable Laying Equipment
