What this planner answers
The planner asks how a long route can be divided into manageable pull sections based on user-selected planning limits. It is intentionally separate from conduit bend-sequence planning: the primary result here is where intermediate pull boxes may be introduced.
Planning methodology
The route is divided into equal sections so that each section remains at or below the preferred maximum length. Pull-box positions are then placed at the boundaries between sections.
The bend count is reported as route context. It does not convert bends into a fabricated pulling-tension limit because actual pulling difficulty depends on geometry, conduit, cable characteristics and installation conditions.
Worked example
A 120-unit route with a preferred maximum section length of 30 units produces four equal sections and three intermediate pull-box positions in the simplified model.
Why equal divisions are useful
Equal sectioning is easy to communicate during early planning. However, actual box positions often move to suit accessible spaces, structural conditions, route changes and construction sequencing.
Important distinction
A pull box is not automatically required merely because a route reaches the user-defined length. The threshold in this tool is a planning preference rather than a universal electrical code value.
Safety and limitations
Verify actual pulling requirements, enclosure accessibility, cable manufacturer's guidance, conduit geometry, working space and applicable project requirements before installation.
Frequently asked questions
Does this calculate maximum pulling tension?
No. A separate engineering calculation is required for cable-specific pulling tension and sidewall pressure.
Can the maximum length be zero?
No. The planning limit must be greater than zero.
Does more bends always mean a pull box is required?
Not necessarily. Bend geometry and installation conditions determine the actual requirement.