Emergency work to restore the power

May 2018


On the 18th of April 2018 Electrio was asked to investigate the failing of supply at the Gregory Lorry workshop building in Cornwall. Upon visiting, we soon determined that the fault lay somewhere along a 230 metre underground run of 400mm SWA.

To ensure a continuous power supply we installed a temporary generator with the assistance of Power Electrics, who quickly responded within a few hours. Their rapid response allowed us to reinstall supply back to the workshops so they could remain fully functioning.

20180429_074150294_iOS.jpgTo help us detect the area where the fault was specialist electronic scanning equipment was deployed over the weekend. Once located further confirmation, using the Murray Loop Test Formula, located the fault to within a metre so we could expose the faulty section of cable.

The damage to the cable occured during installation of further ground works, when it was not repaired correctly thereby allowing water penetration over the subsequent years. During the course of our inspection we also identified a further damaged section of cable where the cable had been resting on a rock for many years, which caused the armour to breakdown.

Our team installed a new section of 400mm SWA cable with two clear joints. With the additional help of a specialist who assisted with electrical testing services, we were able to deliver a professional solution which saved the client many thousands of pounds in additional civil works. Our quick response meant they had a new electrical supply plus could carry on working whilst we carried out essential repairs. 

Filed under: Emergency

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