![KETRACO on X: "Ever wondered what are the balls that hang on power lines? They are called visibility marker balls. You'll often find them near mountain passes, in the deep valley areas, KETRACO on X: "Ever wondered what are the balls that hang on power lines? They are called visibility marker balls. You'll often find them near mountain passes, in the deep valley areas,](https://pbs.twimg.com/media/D0T9F7IXQAA42wQ.jpg)
KETRACO on X: "Ever wondered what are the balls that hang on power lines? They are called visibility marker balls. You'll often find them near mountain passes, in the deep valley areas,
![EPCOR on X: "Ever wonder what these "balls" on power lines are for? #NationalElectricityMonth https://t.co/ptIRz4hAnb" / X EPCOR on X: "Ever wonder what these "balls" on power lines are for? #NationalElectricityMonth https://t.co/ptIRz4hAnb" / X](https://pbs.twimg.com/media/DCxk5K_W0AIQtk2.jpg)
EPCOR on X: "Ever wonder what these "balls" on power lines are for? #NationalElectricityMonth https://t.co/ptIRz4hAnb" / X
![What's With The Orange Balls That Hang From Power Lines In Colorado's Canyons? | Colorado Public Radio What's With The Orange Balls That Hang From Power Lines In Colorado's Canyons? | Colorado Public Radio](https://wp-cpr.s3.amazonaws.com/uploads/2019/08/190809-COLORADO-WONDERS-POWER-LINE-BALLS-1.jpg)