Hi Paul and Jane
Unfortunately, from my understanding, the news is not good regarding living near power lines. I haven’t really done any research into the conventional scientific data around the health consequences (though I’m guessing if it was done without any vested interest, it probably wouldn’t be good), however, in a sister science to Ayurvedic medicine – something called Maharishi Sthapatya-Veda – it is strongly recommended that people do not build houses close to things such as cemeteries, large bodies of water to the south and unfortunately, things like power lines. There are set distances that it is recommended not to live in proximity to power lines – these depend on the exact voltage of the lines and a few other factors so best not to give specific distances here – but for high tension lines it is certainly far more than 80m.
* Note: this is considered to be generally ‘inauspicious’ rather than