Metal and concrete poles can last much longer but eventually all utility poles need to be replaced.
Ceramic things on power poles.
Electricity is like water.
Those are the insulators.
Their purpose is to insulate the electrical wires they carry so that electricity or telephone calls don t all leak into the pole and into the earth.
6 insulators protect electricity from draining into utility poles.
Primary wires are on top of the pole and usually carry 12 000 volts of electricity from a substation.
From the length of the insulators probably towards the higher end of that spectrum.
From what i ve noticed high voltage ceramic insulators only insulate conductors end to end not inside to outside like traditional plastic insulators.
I could not find any information regarding this particular shape though.
Ever notice that power lines don t actually touch the poles.
It s a distribution transformer aka pole pig.
I ve seen these stacked disc structures on high voltage power lines everywhere.
The distribution lines that run down your street are probably 5 15kv.
It leaks if you don t seal it.
It lowers the voltage from the higher voltage in the supply lines to the power used in your house.
Insulators prevent energized wires from coming in contact with each other or the utility pole.
Cutouts act like a fuse and open when there is a problem with the line or a section of it.
Instead the electrical lines are attached to things that look like dinner plates or cups.