300V Elevator Traveling Cable (Communications Steel Center Core)

Elevator Cable
Description

Product Overview

The 300V Elevator Traveling Cable with Communications Steel Center Core is specifically designed to complement new or existing communications installations within elevator hoistways. Engineered to track alongside other traveling cables, this flexible cable features a galvanized steel wire rope support core, optional insulated conductors, shielded pairs, and RG‑6 coaxial cable for comprehensive signal transmission. Meeting UL, CSA, and NEC requirements, it ensures reliable performance in vertical moving applications.

Applications

  • Communications cable installations in elevators

  • Hoistway traveling cables tracking with other cables

  • Dumbwaiters, personnel and material hoists requiring signal transmission

  • Voice, data, and video applications within vertical conveyance systems

Standards & Approvals

  • Steel support core: Military Specification MIL-W-83420

  • Conductor (optional): ASTM B3 (soft annealed copper), ASTM B174 (bunched stranding)

  • Insulation & jacketing: UL 62, CSA C22.2 No. 49, NEC, Canadian Electrical Code

  • Flame testing: UL 1581, CSA FT-1 (flame rated)

Key Characteristics

Property Performance
Voltage rating 300V
Temperature rating 60 °C (conductor operating)
Flame behaviour Flame retardant – meets UL 1581 and CSA FT-1
Mechanical support Galvanized steel wire rope center core per MIL-W-83420
Flexibility Enhanced by jute fillers and woven braid for continuous flexing
Jacket Smooth, flexible, abrasion-resistant PVC

Cable Construction

Center Steel Support Cable

  • Flexible, performance-rated galvanized steel wire rope support strand manufactured to Military Specification MIL-W-83420.

  • Coated with polyvinyl chloride (PVC) insulation.

  • Reinforced with a tightly woven braid of cotton.

Insulated Conductors (Optional)

  • Soft-annealed, bunched stranded bare copper per ASTM B3 and B174.

  • Insulated with flame-retardant 60°C PVC, rated 300V (UL 62, CSA C22.2 No. 49).

  • Each conductor is color and number-coded for easy identification.

Shielded Pairs

  • Two insulated 20 AWG soft-drawn bare copper conductors, PVC insulated, twisted with a bare drain wire.

  • Laminated polyester/aluminum foil tape provides 100% shield coverage.

  • Overall colored PVC jacket, rated 300V.

Coaxial Cable

  • RG‑6, 75 ohm, 300V rated coaxial cable.

Fillers

  • Fibrous-plied jute fillers create a circular cross-section, enhance torsion stability, and cushion the construction during flexing.

Braid

  • A tightly woven braid of cotton, rayon, or equivalent applied over the core to maintain core shape, torsion balance, and add mechanical strength.

Outer Jacket

  • Overall PVC jacket – smooth, flexible, abrasion-resistant.

  • Complies with flame test requirements of UL 1581 and CSA FT-1.

Technical Parameters – Dimensions

Number of Cores x Cross-Section Nominal Overall Diameter Cable Weight Steel Core Diameter
N x AWG mm kg/km mm
4x2x20 20.1 253 –
2x2x20 19.6 298 2.4
4x2x20 19.6 491 3.2
6x2x20 21.6 543 3.2
8x2x20 25.4 729 4.0

Note:

  • All values are nominal and subject to standard tolerances.

  • Custom constructions and additional configurations available upon request.

Specifications at a Glance

  • Voltage rating: 300V

  • Conductor temperature: 60 °C (optional conductors)

  • Flame retardant: Yes (UL 1581, CSA FT-1)

  • Steel core: Galvanized steel wire rope per MIL-W-83420

  • Standard communications elements: Shielded pairs and RG‑6 coaxial cable

  • Jacket: Smooth, flexible, abrasion-resistant PVC

  • Identification: Color and number-coded conductors (optional)