Which of the following is NOT a factor in determining the depth of a pole?

Determining the depth of a utility pole is primarily influenced by several key factors that ensure stability and safety in its installation. The weight of the electrical apparatus, while significant for load calculations, does not directly affect how deep the pole should be buried in the ground.

The height of the pole is crucial because taller poles may require deeper installation to maintain stability against wind loads and other forces acting on them. Soil conditions play a significant role, as different types of soil (sand, clay, loam, etc.) have varying support capacities, which can influence how deep the pole needs to be set. Weight and pull factors, which encompass not just the pole itself but also the forces acting on it from the lines it supports and environmental factors, are also critical considerations in determining the appropriate depth.

Therefore, while the weight of electrical apparatus is important for understanding overall load, it is not a direct factor in establishing the depth of the pole itself, making it the correct answer to the question regarding which is NOT a factor in determining the pole depth.