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Distribution lines

Wood poles (sometimes concrete poles) about 10 metres (30 feet) high.

The line or lines at the top of these poles are medium-voltage conductors made of exposed metal (12,000 volts or 34,000 volts). These lines are not covered by insulating sheaths.

FATAL HAZARD! NOTHING must come within three metres of a medium-voltage line (tools, scaffolding, materials, tree branches during pruning or cutting operations).

For information or questions about safety, vegetation or work near DISTRIBUTION lines, click here.

Transmission lines

Towers of various shapes and heights (from 14 metres to more than 100 metres) support high-voltage conductors. The towers may be of metal lattice, concrete or wood. Note that wood towers are taller than distribution line poles. Transmission lines are generally located in cleared corridors of varying widths called rights-of-way.

Transmission line voltages vary between 44 kV and over 735 kV (735,000 volts). It’s important to remember that transmission line conductors are not covered by insulating sheaths. For obvious safety reasons, NOTHING SHOULD COME NEAR A HIGH-VOLTAGE LINE.

For any questions about safety, vegetation or work near TRANSMISSION lines, click here.