J
jacksongroup
Hi All,
I have recently moved to the wilds of Scotland and to a house in a rural area. Now I have worked on electrics for a number of years in the SE but have been pursuing a teaching career for the last few years. Intend to take on a little domestic electrics to supplement incomes. Now most of my work has been in cities and not given much thought to overhead powerlines. As the supply to the property I am currently in needs a little work this is where I am going to start.
Now the power supply comes in on top of poles before being taken to a transformer on the top of the pole before going underground to our property. Once at the property the supply is very definitely TNCS and not TT as I would at first have expected. At the henley block on the pole I can see the neutral is connected to an earth cable that then runs into the ground and is repeated at other poles with transformers consistent with PME
I am having an issue with identifying what is on top of the pole. There are 3 overhead cables . The two outer cables are tapped off and go into the transformer ( the middle continues on its way). I am thinking that one of these two cables must be the live and the other a neutral. However the farm next door reckons on having a three phase supply.
So my confusion is this... are the three cables all live(different phases) and if so, how do I have a neutral? Is my neutral path actually provided by the earth? OR if one of these cables is actually a neutral and the other two are lives can the neighbouring farm actually have a three phase supply and is it normal to have two lives and one neutral as I would have thought this could easily be somewhat unbalanced.
Any help in improving my understanding gratefully appreciated. Have spent a long time trying to find the answer and many hours looking at the poles to try and understand!
I have recently moved to the wilds of Scotland and to a house in a rural area. Now I have worked on electrics for a number of years in the SE but have been pursuing a teaching career for the last few years. Intend to take on a little domestic electrics to supplement incomes. Now most of my work has been in cities and not given much thought to overhead powerlines. As the supply to the property I am currently in needs a little work this is where I am going to start.
Now the power supply comes in on top of poles before being taken to a transformer on the top of the pole before going underground to our property. Once at the property the supply is very definitely TNCS and not TT as I would at first have expected. At the henley block on the pole I can see the neutral is connected to an earth cable that then runs into the ground and is repeated at other poles with transformers consistent with PME
I am having an issue with identifying what is on top of the pole. There are 3 overhead cables . The two outer cables are tapped off and go into the transformer ( the middle continues on its way). I am thinking that one of these two cables must be the live and the other a neutral. However the farm next door reckons on having a three phase supply.
So my confusion is this... are the three cables all live(different phases) and if so, how do I have a neutral? Is my neutral path actually provided by the earth? OR if one of these cables is actually a neutral and the other two are lives can the neighbouring farm actually have a three phase supply and is it normal to have two lives and one neutral as I would have thought this could easily be somewhat unbalanced.
Any help in improving my understanding gratefully appreciated. Have spent a long time trying to find the answer and many hours looking at the poles to try and understand!