Our NEC Conduit Fill Chart calculates THWN and THHN wire fill for EMT, IMT, rigid metal, or flexible metal conduit pipe using conduit trade size and AWG or MCM wire size.

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.

The following is a typical conduit fill chart, which shows data for different types of conduit such as EMT conduit, IMC conduit, and GRC conduit. The possible wire gauges go from 14 AWG to …

CONDUIT FILL TABLES – NEC TABLE C CONDUCTOR SIZE – AWG / kcmil – THHN / THWN SIZE 14 12 10 8

Aug 2, 2025 · Discover NEC-compliant conduit fill charts for EMT, IMC, Rigid, and Flexible Metal Conduits. Downloadable tables, size-by-size breakdowns, and manufacturer-supplied …

The NEC sets standards for the percent of volume that can safely be put into conduit. The below chart is from Table 1 in Chapter 9 of the National Electric Code.

Oct 27, 2025 · Master conduit fill calculations with our complete NEC guide including fill charts, wire capacity tables, and step-by-step examples. Learn proper conduit sizing for electrical …

Calculate conduit fill percentages and find the right conduit sizing per NEC Chapter 9 requirements. Works with EMT, PVC, and RMC conduits with accurate wire area calculations …

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

The Conduit Fill Tracker provides visual graphs showing current and remaining fill capacity, making it immediately apparent how close installations are to code limits.