Formula variables
- Box volume is the marked or catalogue volume entered by the user.
- Conductor count is the entered count for the screen.
- Volume per conductor is entered from the user chosen basis.
- Device and clamp allowances are entered as millilitre values.
Assumptions
- The box volume is entered from the actual box marking or catalogue data.
- Conductor, device, and clamp allowances are entered by the user.
- The calculator does not embed or publish jurisdictional fill allowance tables.
- This calculator does not publish code fill allowances, approve box fill, or replace the marked box volume.
Examples
Marked box screen. A 500 ml box with entered allowances totalling 225 ml estimates 45 percent fill and 275 ml remaining.
Review workflow. Use actual box markings, conductor basis, devices, clamps, and local review before treating the screen as acceptable.