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    • Home
    • Transmission Projects

    OPPD The Wire Stories: Transmission & Distribution Basics

    • Video: The difference between types of power lines
    • Infographic: Anatomy of a power pole
    • Ice has weighty effect on power lines
    • What causes ‘circuit trips’?
    • OPPD’s Energy Control Center
    • Tree maintenance: Whose responsibility is it?
    • Air-flow spoilers
    • Padmount transformer
    • Energy management system connects substations to electrical grid
    • Why high-voltage power lines ‘hum’ in some weather conditions
    • Substations
    • Shield wire
    • Electric system circuit