concrete electric pole with diamond-d frames construction with clusters of insulators, to which main high-voltage wires

attached background blue brown bunch cable cluster clusters communication concrete connection construction copy current danger delivery diamond diamondshaped distribution electric electrical electricity energy engineering equipment frame frames gray high highvoltage holder industrial infrastructure input insulators line main maintenance means metal network pillar pole post power provision pylon round sky space structure supply support tower transformer transmission transverse tripwire tripwires voltage which wire wires