ISA Certified Arborist Practice Exam

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What is a primary concern when planting trees near power lines?

Increased shade on the power lines

Potential interference with electrical lines as they grow

The primary concern when planting trees near power lines revolves around the potential interference with electrical lines as the trees grow. This can lead to numerous issues, including power outages, increased maintenance costs, and safety hazards if branches or entire trees make contact with the lines. As trees mature, they can exceed their expected height and spread, which may bring them into direct contact with the electrical infrastructure, creating serious fire risks and disrupting service.

Additionally, the growth of trees can cause physical damage to the lines, resulting in costly repairs and the need for regular trimming to maintain clearance. These issues highlight the importance of careful planning and selection of tree species that will not grow too tall or wide near utility lines. Proper siting and tree selection are crucial to ensuring ongoing safety and service reliability.

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Soil erosion around the base of the power lines

Improved aesthetic appearance of power installations

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