Conduit Fill Table This conduit fill chart is used to determine how many wires can be safely put into non-PVC conduit tubing or pipe.

The app will calculate the conduit fill percentages and jam probability for multiple conductors per NEC® Guidelines. Simply enter the conduit type and size, then specify your conductors.

Conduit Fill Tables – NEC Table C Conductor Size – Awg / Kcmil – THHN / THWN ... 2 1⁄2 40 193 141 89 51

Use the below charts to determine the number of wires that can be put into conduit tubing, while maintaining NEC standards. [Additional tables continue with Fixture Wires, Compact Conductors, …

This conduit fill table can help you make wiring decisions. Use it to determine how many wires your conduit tubing can safely contain. The horizontal numbers at the top of the graph refer to the size …

We hope to provide you with the best online conduit fill calculator, as well as all relevant information regarding conduits, conduit fill, conduit accessories, and more!

Aug 12, 2025 · When you’re planning or reviewing a raceway run, nothing beats a conduit fill chart. It turns code percentages into clear, ready-to-use numbers— no calculator required. This guide …

This conduit fill chart is used to determine how many wires can be safely put into conduit tubing or pipe at a 40% fill, taking into account cable conduit size vs. cable quantity.

243 221 201 184 169 156 144 133 124 115 108 101

Maximum Number of Conductors In Conduit or Tubing: Type of Wire