In industrial electrical work, "plug-and-play" doesn't always mean "code-compliant." While standard flexible cords (NEC Art. 400) are acceptable for temporary use, UL 183 certifies Manufactured Wiring Systems (MWS) as permanent building infrastructure under NEC Art. 604. Power Built uses a "Chain of Compliance"—incorporating UL-listed raw materials and our own system-level certifications (UL 183 & 1598)—to ensure your modular installation is fast, safe, and inspector-approved