Vintage lot 65 00 vintage lot of 3 brown ceramic insulators dual bracket power pole steampunk.
Ceramic power pole insulators.
Lot of 26 porcelain ceramic tube knob wire electrical insulators barn antique.
Joslyn 3648 metal insulator bracket with 3 brown ceramic insulators.
Vintage large ceramic insulator brown power pole telphone.
Vintage 12 65 00 vintage 12 wooden screw peg pin for ceramic or glass pole line insulators lot of 64 99 lot of 6 vintage porcelain ceramic telephone insulators cook thomas locke.
Lapp 1999 electical insulator transformer power pole electric ceramic insulator.
An insulating material used in bulk to wrap electrical cables or other equipment is called insulation.
The term insulator is also used more specifically to refer to insulating supports used to attach electric power distribution or transmission.
Vintage black top porcelain ceramic insulator telephone electric voltage.
Similar to their glass counterparts porcelain insulators date back to before the civil war for telegraph wires.
In north america glass was always the predominate material for communications insulators but porcelain has become the standard for power distribution due to its greater strength and surface resistance.
Overhead line insulators it is obvious that if overhead power lines are not properly insulated from their support poles towers the current will flow towards the ground through the poles towers which also become hazardous.
Hence overhead power lines are always supported on insulators mounted on their support poles towers.