What typically causes an arc between a conductor and a worker in an insulated basket?

An arc between a conductor and a worker in an insulated basket is typically caused by contact with an energized line. When a worker inadvertently touches or comes close to an energized conductor, the high voltage can create a path for electricity to jump through the air, resulting in an arc. This phenomenon occurs due to the difference in electrical potential between the conductor and the worker, which leads to a discharge.

In insulated environments, while insulation is designed to prevent this type of contact, there are situations where workers may inadvertently breach that safety margin (for example, if equipment is not properly maintained, or if an insulated basket is not sufficient to provide the necessary protection). Understanding the importance of proper distance and insulation can help prevent these dangerous situations.

Other causes like static electricity, insulation breakdown, and environmental factors can contribute to electrical hazards but are less likely to be the primary causes of arcing in this specific context. Static discharge usually occurs in low-energy situations and typically would not create a significant arc as described. Insulation breakdown happens under specific conditions, often after prolonged exposure to electricity, wear, or external damage. Environmental factors could include humidity or contaminants that affect electric fields, but in the case of an insulated basket working near energized lines, the direct contact with the line