(SYS-4104.04) Electrical Systems and Illumination Certification Exam

Electrical Systems and Illumination (SYS-4104.04) Power distribution, circuit protection, and luminaire installation form the operational core of SYS-4104.04. Real-world scenarios require you to diagnose voltage drops across residential panels, size conduit for branch circuits, and troubleshoot LED retrofit compatibility—not theory alone. Expect performance-based questions where calculating load calculations and selecting proper disconnects directly mirrors jobsite decisions electricians face daily.