Electrical Metal Conduit - Types and Sizes In this video we look at the different type of steel conduit, finishes and the 4 common sizes they come in. This information is essential when training to become an electrician as part of your apprenticeship. Steel conduit comes in either a 3.75 metre or 3 metre length and sizes of 16 mm, 20 mm, 25 mm and 32 mm. ☑️ link to my conduit notes on the eFIXX apprentice hub https://www.efixx.co.uk/Apprentice Hub/downloads 🔵 How to Workout the Cable Capacities