Improve your experience. We are very sorry but this website does not support Internet Explorer. We recommend using a different browser that is supported such as Google Chrome or Mozilla Firefox.
Get a refresher on the code in this 2-day training! Topics include: How transformers work, Basic transformer math, Sizing of over current devices, and more! This course, based on the National Electrical Code (NEC), qualifies for up to 10 contact hours toward electrical continuing education credits (CEUs).