The meaning behind those colorful balls on power lines

What are those colourful aerial marker balls on power lines? Why are they used? - Quora

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What are those colorful balls really for?, Local News

The Reason Behind Those Brightly Colored Balls Along Power Lines

What Are Those Balls That Hang on Power Lines?

Power Lines, Electrical Devices, and Extremely Low Frequency Radiation

Why Can't Texas Just Bury Its Electrical Lines? – Texas Monthly

Why are colored balls used in Power Transmission Lines?

Transmission Power Lines Colored Balls 4 Stock Image - Image of space, areas: 255625845

WAZIPOINT Engineering Science & Technology: Why are Some Colored Balls Mounted on High-Voltage Power Lines?

What Are Those Big Colorful Balls You See On Powerlines?