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Steel Clad Building and High Voltage Overhead Cables.

Views invited please.


There is a modern sheet steel clad building nearby. It has what appears to be plastic covered steel sheets as exterior walls. It is used as a Scout Hut and can probably accommodate about 80 people for events. Running overhead are three high Voltage cables that feed local transformers, including the scout hut transformer which is on a pole nearby. The scout hut has two earth electrodes which connect to a part of the building and earth it. Although they are quite close together so may not really count as two in function.


Theoretically what would happen if one of the H.V. overhead cables came adrift and fell onto the roof of the building regarding risks?


This is a theoretical question relating to a real building but with a serious intention.


Thanks,


Z.


Parents
  • Here in the US there is a trend away from shingles to Metal roofs on residual homes.


    Talking to the roof installers they do not ground the metal roof . It is not required by the current building codes.


    In some cases the high voltage power lines which feed power to the homes (through transformers mounted on the same wooden poles), are adjacent to the metal roofed houses.  It is not unusual  during hurricane strength winds for trees to take down the power cables.


    The other problem with metal roofs is for the potential  electrocution of maintenance roofers, when solar panels are directly mounted over the metal roofs. 


    Needless to say I will not put a metal roof on my house.


    Peter Brooks MIET

    Palm Bay Florida USA
Reply
  • Here in the US there is a trend away from shingles to Metal roofs on residual homes.


    Talking to the roof installers they do not ground the metal roof . It is not required by the current building codes.


    In some cases the high voltage power lines which feed power to the homes (through transformers mounted on the same wooden poles), are adjacent to the metal roofed houses.  It is not unusual  during hurricane strength winds for trees to take down the power cables.


    The other problem with metal roofs is for the potential  electrocution of maintenance roofers, when solar panels are directly mounted over the metal roofs. 


    Needless to say I will not put a metal roof on my house.


    Peter Brooks MIET

    Palm Bay Florida USA
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