I posted this picture of a transformer in August. It is front of the iconic Scottish mountain, Buchaille Etive Mor. I was looking at it again today and I noticed that the insulators holding the wires onto the wooden frame are not equal lengths. It has finally dawned on me that the higher the voltage, the more insulators are needed. Logic would suggest that the transformer is stepping down the voltage from right to left. The Kingshouse Hotel is out of shot on the left. If the insulators show that the voltage is 2/3 the size on the left, 2/3 of 11kV is 7300V. I think that's a bit high. I wonder how they choose the number of insulators? My calculations in a post on the subject in September suggests that they use a large safety factor.
