About those power boxes that are in cities: https://i.stack.imgur.com/5SoTx.jpg
I can hear from a couple of on ground power boxes a very noticeable buzz of electricity.
There are a few power line poles with much larger transformers than the ones in the picture and other parts that I don't recognize that also emit a moderate amount of noise.
Is there any concern of radiation when walking near them?
Isn't the noise an indication of high voltage that's being discharged? That's basically how an x-ray machine works no?
If it matters, I live in a country with 220V outlets.