With ductless mini-splits continuing to dominate the HVAC landscape in 2025, the industry is shifting toward safer, faster, and code-compliant installation practices. That’s where TC-ER (Tray Cable – Exposed Run) wire stands out — especially as a communicating wire connecting indoor and outdoor units.
⚡ 600V Rated, CSA Approved – Built for HVAC
Unlike standard thermostat or low-voltage wire, TC-ER cable is rated for up to 600 volts and is CSA-certified, giving contractors peace of mind when working with systems that carry both power and signal.
This higher voltage rating ensures longer-lasting performance, reduced risk of failure, and compliance with Canadian Electrical Code — a crucial advantage for ductless installations where safety and reliability are paramount.
✅ Why HVAC Contractors Prefer TC-ER
1. Fewer Materials, Faster Installs
With its exposed run (ER) rating, you can install TC-ER without conduit in many applications — ideal for outdoor unit connections, attic drops, or mechanical rooms.
2. One Cable, Multiple Roles
Use a 4-conductor TC-ER cable to carry both line voltage and communication signals — simplifying wiring between mini-split components.
3. Rugged, Weather-Resistant Jacket
Perfect for Canadian climates, this cable resists UV, moisture, and cold — ensuring durability across all seasons.
4. Inspection-Ready
Using CSA-approved TC-ER wire means easier permit approvals, less risk of red tags, and more confident installs.
🛠 Designed for Ductless Applications
- Single-zone and multi-zone mini-split systems
- Rooftop and exterior wall-mounted outdoor units
- Attics, crawlspaces, or exposed mechanical rooms
- Retrofit or new construction installs
🧰 Available Now at Future Supply Inc.
At Future Supply, we offer CSA-certified 600V TC-ER wire in the sizes and conductor counts you need for ductless HVAC work. Ready to ship across Ontario and beyond.
👉 Shop Our TC-ER Cables
📞 Contact us for pricing, specs, or contractor discounts
