April 17, 2026
Wire Cross-Sectional Area Chart | AWG, THHN, and XHHW Reference
Find a complete reference chart for wire cross-sectional areas. Compare AWG sizes, OD, and area for THHN, XHHW, and other common conductor types.
Conduit Fill Reference
Technical reference articles covering conduit fill formulas, ratio charts, wire cross-sectional areas, and conduit type comparisons — the reference library every electrician needs bookmarked.
April 16, 2026
What is Conduit Fill? | The Complete Electrician's Guide
Learn everything about conduit fill: NEC rules, calculation methods, safety reasons, and professional best practices. The ultimate guide for electricians.
April 15, 2026
Types of Electrical Conduit | EMT, PVC, IMC, and RMC Comparison
Learn about the different types of electrical conduit and which one is right for your project. Our guide covers EMT, PVC, IMC, and RMC materials.
April 11, 2026
The Conduit Fill Formula | Step-by-Step Math Guide
Learn how to calculate conduit fill percentage by hand. Our guide explains the formula, the math behind it, and worked examples for different wire combinations.
March 31, 2026
NEC Conduit Fill Chart | Complete Trade Size Reference
Find the complete NEC conduit fill chart for EMT, PVC, IMC, and RMC. See trade size capacities for all common wire gauges at the 40% fill limit.
March 23, 2026
Conduit Fill Chart Guide: Ensure Accurate Trade Size Fill Levels with Ease
Find your perfect conduit size with our comprehensive guide to conduit fill by trade size, including a handy conduit fill chart for 1/2", 3/4", 1", and 2" conduits.