This class is offered in the Hyflex format, meaning the work can be accomplished online with the opportunity to attend weekly classes either in person or via Zoom. Electrical Apprentice Year 4: Course D; This is one of four 8-week courses that comprise the Year 4 Electrical Apprentice training. Year four of the electrical apprenticeship program walks through the National Electrical Code in its entirety. In addition, the course reviews years 1, 2, & 3 content. Regular random code calculations and code practice exercises are foundational and prepares the student for state journeyman testing.