| +/- power=pole
Power line pole or small mast
Possible key for poles or small masts of overhead power lines with low- or medium-range voltages between about 0.4 and 30 kV. 0.4 kV lines (such as the one in the right image of the three examples) are still often found in small towns and villages. Outside villages in rural areas, the medium-voltage net is also often made of overhead lines on poles or small masts. At the terminal masts, the line either changes to an underground cable or goes into a transformer which steps down to about 400 V.
(The voltages described here fit best for Germany and maybe other countries using 230 V. If you can add different voltages and also examples of power lines in other countries, please do so.)
Please don't confuse these with overhead lines which are not for energy supply, e.g. those used for telephone wires.
There is a proposal to mark poles where the minor-line is connected to an underground_cable:
Related terms: <power pole>