Digging Back And Locating A Service Cable Joint On The Mains Cables

By Chris Dodds on 20th May, 2013

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LV Cable Jointing.

If a signal device or embossed markings cannot be used to LV cable identification, the LV cable to be worked upon must be exposed alongs its length until a service cable joint is exposed. To be positively identified as a service cable joint the LV service cable exiting the cable joint shall be exposed and clearly seen as going from the cable joint to either a house boundary or to street lighting furniture.

Careful examination of the LV cable plans must also be undertaken to ensure that no small section of HV cables are present in the area. Exposure of an LV plastic cable joint mould is not positive identification because LV cable joint moulds have been used to repair HV cable sheaths.

The cable between the identified service joint and the point of work for the LV cable jointer must be fully exposed such that a running noose may be pulled between the two points.

Excavation for cable identification can stop when the required cable has been positively identified by this method - if there is any doubt whether the found cable joint is an LV cable joint then advise should be sought from the local DNO.

T&D are Link-up Registered and Approved Vendors to Network Rail and TfL London Underground (LU).

Category:  Rail

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