DNO cable

Kelly

As others above have explained PILC cables are repaired with a CNE cable.

Down here in UKPN land this is known as a PILC transition joint. About 2m of the PILC is cut out to expose 2 ends of the PILC cable. The lead each side is cut back to expose the 4 copper live conductors. The lead sheaths are cleaned up each side and a flat copper braid is held in place with a constant pressure spring on the lead sheath and covered with self amalgamating tape. The 3 copper line conductors are joined to the 3 Wavcon aluminium cores with a compression joint  with a snap off torque bolt clamp then insulated. The neutral PILC cores are joined to the Wavecon copper combined neutral earth with the braids from the lead sheath. A separate earth is also brought out of the joint. The joint is surrounded top and bottom with a torpedo plastic cover and the joint filled with a 2 part epoxy resin. The earth brought out of the joint is connected to a normal 1.2m copper clad earth rod laid next to the joint. The cable jointers are not allowed to dive the rod in due to historic mishaps. I have seen this done live with the jointer sitting on rubber mats in 1000V wellies and gloves. Only one cable core is exposed at a time with sticky wraps around the other cores. Also done on single phase service cables from the 3 phase main the same way but for some reason no earth rod on that joint.

This is an every day event in UKPN land with the decaying PILC network decades old. A few years ago UKPN declared where they have given you a service with an earth there whole network is PME as they have done so many PME joints. So my 1935 supply from PILC with a sweated earthing conductor from the lead sheath is PME despite its appearance. My house is in a group of houses in 2 roads which is supplied in a radial from a transformer in the grounds of the nearby girls school . It has gone bang in various locations over the years and is slowly being replaced in 2m lengths. A bit like triggers broom. When we go all electric for cars and heating no doubt we will be on first name terms with the cable jointers during their frequent visits.

JP

Kelly

As others above have explained PILC cables are repaired with a CNE cable.

Down here in UKPN land this is known as a PILC transition joint. About 2m of the PILC is cut out to expose 2 ends of the PILC cable. The lead each side is cut back to expose the 4 copper live conductors. The lead sheaths are cleaned up each side and a flat copper braid is held in place with a constant pressure spring on the lead sheath and covered with self amalgamating tape. The 3 copper line conductors are joined to the 3 Wavcon aluminium cores with a compression joint  with a snap off torque bolt clamp then insulated. The neutral PILC cores are joined to the Wavecon copper combined neutral earth with the braids from the lead sheath. A separate earth is also brought out of the joint. The joint is surrounded top and bottom with a torpedo plastic cover and the joint filled with a 2 part epoxy resin. The earth brought out of the joint is connected to a normal 1.2m copper clad earth rod laid next to the joint. The cable jointers are not allowed to dive the rod in due to historic mishaps. I have seen this done live with the jointer sitting on rubber mats in 1000V wellies and gloves. Only one cable core is exposed at a time with sticky wraps around the other cores. Also done on single phase service cables from the 3 phase main the same way but for some reason no earth rod on that joint.

This is an every day event in UKPN land with the decaying PILC network decades old. A few years ago UKPN declared where they have given you a service with an earth there whole network is PME as they have done so many PME joints. So my 1935 supply from PILC with a sweated earthing conductor from the lead sheath is PME despite its appearance. My house is in a group of houses in 2 roads which is supplied in a radial from a transformer in the grounds of the nearby girls school . It has gone bang in various locations over the years and is slowly being replaced in 2m lengths. A bit like triggers broom. When we go all electric for cars and heating no doubt we will be on first name terms with the cable jointers during their frequent visits.

JP

. "It has gone bang in various locations over the years and is slowly being replaced in 2m lengths. A bit like triggers broom. When we go all electric for cars and heating no doubt we will be on first name terms with the cable jointers during their frequent visits"

Priceless