WTEC 4S™ — Field Installation Guide
A complete DC cable and disconnect system built to simplify installation and improve field performance. Used by EPCs to reduce install time and improve cable reliability in large-scale solar projects.
01 — System Overview
A self-supporting DC cable management and disconnect solution designed for utility-scale solar. It integrates cable support, routing, and prefabricated components into one system.
The 4S™ System organizes, supports, and protects DC cables across the site. It combines messenger wire, cable management blocks, pre-terminated trunk cables, and disconnect boxes into a single integrated solution.
02 — Installation Guides
These documents cover all phases of 4S™ installation from structural support through final electrical connections. Download any manual directly as a PDF.
Complete end-to-end installation guide covering support system, bracket installation, trunk cable routing, grounding, and electrical connections. The master reference for all 4S™ field work.
Dedicated guide for installing 4S™ Self-Supporting DC Trunk cables. Covers block installation, dead end assembly, cable sag & angle tables (15–30 ft spans), tension guidance at 80 lbs/cable, and electrical connections.
Step-by-step guide for installing the Gen 2 Cable Management Block system, including messenger wire tensioning (40 lbf), block stacking for 2-pair and 4-pair homerun configurations, and mid-span support every 2 ft.
Full installation, wiring, and grounding instructions for WTEC DB-150xx series Disconnect Boxes. Covers I-beam mounting, DC feeder connections (340 in-lbs), and NEC 250 / 690 compliance.
More installation manuals will be added here as they become available.
03 — Technical Support
Contact our engineering team for troubleshooting, warranty questions, or site-specific guidance.