How wide is the clearing for the transmission line and how is this determined?

Submitted by patrickboileau on Thu, 09/15/2016 - 12:37
The actual cleared transmission line right-of-way (ROW) will be approximately 40 m (130 ft) wide. This is the area of land that will be cleared to facilitate the safe construction and operation of the transmission line, including the pole infrastructure and associated conductors and anchors.
The approximate 40 m (130 ft) wide transmission line ROW dimension is primarily determined by tree fall-clearance and forest fire protection needs. Other considerations for this 40 m (130 ft) standard are factors such as:
  • The distance between poles and the resulting sag of the conductor (line) during high use (load) and high temperatures,
  • The dimensions of the cross-arms and insulators,
  • Tree height, and,
  • The lateral sway of conductors/wires during strong crosswinds.
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