WireFillChart
Free NEC 2023 conduit fill calculator and wire fill charts for EMT, PVC, IMC, RMC and flex.
- Web
- Productivity
- Pricing: Free
- calculator
- electrical
- engineering
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About WireFillChart
WireFillChart is a free, browser-based NEC 2023 wire fill chart and conduit fill calculator for US electricians, inspectors, engineers and students. Pick a conduit type (EMT, IMC, RMC, PVC Schedule 40/80, FMC, LFNC, ENT), add THHN, THWN-2, RHH, RHW-2 or TW conductors, and read the live fill percentage and NEC Chapter 9 Table 1 status, including Note 7 rounding; on overfill it recommends the next trade size. No signup.
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