Conduit Fill Chart: How Many Wires Fit in EMT? - Conduit fill chart for EMT with THHN wire counts per NEC Chapter 9: how many #14, #12, #10, #8 and #6 wires fit in 1/2" to 2" EMT, the 40% rule, and the 60% nipple rule.
How to Bend EMT Conduit: 90s, Offsets & Saddles - Step-by-step EMT conduit bending: 90° stubs with take-up, offsets with multipliers, back-to-back bends and 3-point saddles - plus tape-ready bend marks from the app.
Conduit Bending Multipliers & Offset Shrink Chart - Offset multiplier chart for conduit bending: 10°, 22.5°, 30°, 45°, 60° multipliers with shrink per inch of offset, the cosecant math behind them, and worked examples.
Box Fill Calculation Explained (NEC 314.16) - How to calculate electrical box fill per NEC 314.16: volume allowances per wire size, what counts (devices, clamps, grounds), and a worked single-gang example.
Wire Size & Ampacity Chart (NEC 310.16) - Copper wire ampacity chart per NEC 310.16 with the 100-amp and 200-amp answers: sub-panel vs dwelling service sizing (310.12), small-conductor caps, and the 75°C rule.
Conductor Derating in Conduit (NEC 310.15) - NEC 310.15(C)(1) derating chart: adjustment factors for 4+ current-carrying conductors in conduit, ambient temperature correction, which conductors count, and a worked THHN example.
Ground Wire Size Chart: EGC (250.122) & GEC (250.66) - Ground wire sizing charts: equipment grounding conductor by breaker size (NEC 250.122) and grounding electrode conductor by service size (250.66), with the upsizing rule.