Sealing Cables For Cable Drum Storage | Part 3

Published 22 Nov 2021

Cable Pulling

Sealing Cables

Stephen Harrison – Training & Technical Manager at Current Training Service Pty Ltd

In Part 1 and 2 of the series we discussed how to correctly seal cable ends and explored the different types of cable end caps which have been designed for pulling cables and storage.

Part 3 will explain about water getting into cables when storing cable drums outside.

Cable Pulling

When cable drums are stored outdoors with end caps attached, the sun and other elements may cause the end cap to move and break the glue seals allowing moisture to migrate into the cable. If this happens, the cables are now in a poor state for installation as there may be some traces water in the cables prior to installation.

This is not an ideal situation.

The use of black sealant mastic and end caps will ensure the seal will not move or crack and water is less likely to penetrate the cables.

It’s important for your cables, which are being stored, to have the best chance of being in a pristine condition when you need to pull them in.

There are many “backyard” ways of sealing cables: PVC insulation tape wrapped around the ends of the cable, cloth and tape wrapped around the ends, plastic bags with tape wrapped around, and sometimes no end caps at all. The best way of sealing cables is with heat shrink or cold apply end caps and mastic.

To recap from Parts 1 & 2, when pulling cables and leaving the cables in pits etc, consider using triple end seals for added protection. When storing cable drums outdoors, consider using a drum storage for extra sealing and storage.

Cable Pulling Cable Laying Equipment

Cable Pulling Cable Laying Equipment

Further Reading

Cable Pulling Considerations

Cable Pulling Calculation Example From Brugg Cables

Secure Spiking of Underground LV & HV Cables | Cable Spiking & Cutting Tools

Cable Pulling & Cable Laying Equipment

Cable Pulling & Cable Laying Equipment