What kind of cables look good and are durable when used in cable trays

Type TC (Tray Cable) and its variant TC-ER are the most durable and widely recommended cables for cable tray installations.

Overview of Tray Cables

Tray cables are multi-conductor cables designed specifically for cable trays and raceways, featuring enhanced insulation and jacketing to withstand mechanical stress, moisture, sunlight, chemicals, and high temperatures. They are UL listed and comply with NEC standards, ensuring safety, flammability resistance, and durability. Tray cables are suitable for power, control, signal, and instrumentation applications in industrial, commercial, and utility environments.

Recommended Types1.

Type T

C (Tray Cable)Rated for 600V, with some versions up to 1000V or 2000V. Factory-assembled with two or more insulated conductors under a non-metallic jacket. Suitable for power, control, lighting, and Class 1 hazardous circuits.

Can be used in cable trays, raceways, and outdoor locations when supported by a messenger wire. Common subtypes include VNTC (Vinyl Nylon Tray Cable) for cost-effective applications and XHHW (Cross-linked Polyethylene High Heat Water-resistant) for high heat and moisture resistance. 2.

Type TC-ER (Exposed Run Tray Cable)Designed for exposed runs between cable trays and equipment up to six feet without continuous support. Meets crush and impact requirements, making it more durable than standard TC cables in areas not fully protected by the tray. 3.

XPTC/XHHW/XLP Tray CablesXPTC: XLPE insulated conductors with PVC jacket, excellent corrosion and chemical resistance.

XHH

W: Thermoset XLPE insulation, high heat and water resistance, suitable for wet and dry locations.

XL

P: Cross-linked polyethylene insulation with PVC jacket, highly durable and resistant to cracking, ozone, and solvents.

Key Durability Features

Flame retardant and UL listed for safety. Impact and crush resistant, especially TC-ER cables. Chemical, moisture, and UV resistant, suitable for harsh industrial environments.

Direct burial rated options available for outdoor installations. Shielded versions are available for environments with electromagnetic interference.

Conclusion

For maximum durability and versatility in cable trays, Type TC and TC-ER tray cables are the best choices, with XHHW or XPTC variants recommended for high heat, wet, or chemically aggressive environments. Always ensure the selected cable is UL listed, tray-rated, and compliant with NEC Article 336 for safe and long-lasting installations.