ISA Certified Arborist Exam [isa]

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An arborist who is NOT a qualified line-clearance arborist is assigned to prune a tree with branches that are 12 feet away from a 45 kV (45,000 volts) primary distribution line. According to ANSI Z133 standards, what is the required action?

Use a fiberglass pole pruner to maintain a safe distance. Proceed with the work as long as a spotter is present to monitor clearance. Notify the electric utility and halt work until the lines are de-energized or shielded. Trim only the branches that are more than 10 feet away from the line.

Correct Answer:

Notify the electric utility and halt work until the lines are de-energized or shielded.

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