The primary difference lies in the influence of gravity on the pulling force. In horizontal pulling, tension is generated mainly by friction between the cable and the conduit or rollers. Gravity is a factor on slopes but is not the dominant force.

In vertical pulling, gravity is the main force at play. Pulling a heavy cable upwards means the pulling force must overcome both friction and the entire weight of the cable in the shaft. Conversely, pulling a cable downwards requires a precise braking or tensioning system to prevent a "free-fall" that could damage the cable or create a dangerous situation. This makes vertical pulling far more complex and requires specialized equipment to manage these significant gravitational forces.