350/400/500 MCM RW90 XLPE Building Wire | CSA C22.2 Copper Single Conductor | 600V 90°C

Commercial & Building Cables CSA-Approved Low Voltage Power Cables7
Description

350/400/500 MCM RW90 XLPE Building Wire | CSA C22.2 Copper Single Conductor | 600V 90°C

Product Overview

This RW90 XLPE Building Wire series delivers high-current power transmission for commercial and industrial applications. Available in 350 MCM, 400 MCM, and 500 MCM configurations, these CSA-certified copper conductors feature cross-linked polyethylene insulation for superior thermal performance (90°C dry rating). Engineered for conduit and raceway installations in demanding environments.

Construction & Materials

Component Specification
Conductor Soft-annealed bare copper (Class B stranded)
Stranding 37 wires (all sizes)
Insulation RW90-Rated XLPE
Jacket None (Single conductor design)

Technical Specifications

Parameter 350 MCM 400 MCM 500 MCM
Conductor Size 350 kcmil 400 kcmil 500 kcmil
Conductor Diam. 17.30 mm 18.49 mm 20.65 mm
Insulation Thick. 1.52 mm 1.52 mm 1.52 mm
Overall Diameter 20.7 mm 21.9 mm 24.1 mm
Ampacity (90°C) 350A 380A 430A
Weight 1,751 kg/km 1,995 kg/km 2,463 kg/km
Voltage Rating 600V 600V 600V
Temp. Range -40°C to +90°C (Dry) / -40°C to +75°C (Wet)

Standards Compliance: CSA C22.2 No. 38 (RW90) • FT1 Flame Test

Key Applications

  • High-Current Feeders: Main service panels & sub-distribution

  • Industrial Machinery: Heavy motors, presses, CNC equipment

  • HVAC Systems: Chillers, large compressors, boiler controls

  • Data Center Power: PDU inputs, critical busway connections

  • Commercial Retrofit: Conduit-based power upgrades

Product Advantages

Benefit Technical Advantage
Optimized Current Flow 37-strand copper minimizes voltage drop at high loads
Thermal Endurance XLPE maintains dielectric strength at 90°C
Flexible Installation Soft-annealed copper bends easily (6x OD radius)
Chemical Resistance XLPE resists oils, acids, and alkalis
Wet Location Rating RW90 compliance for damp environments

Engineering Selection Guide

  1. Current Requirements

    • 350 MCM: 350A continuous load

    • 400 MCM: 380A continuous load

    • 500 MCM: 430A continuous load
      *Derate per NEC 310.15 for ambient >30°C/conduit fill*

  2. Installation Compliance

    • For conduit/raceway ONLY (C22.2 requirement)

    • Minimum bending radius:

      • 350 MCM: 125 mm

      • 400 MCM: 132 mm

      • 500 MCM: 145 mm

  3. Environmental Suitability

    • Approved for dry/wet locations

    • Not rated for direct burial or exposed runs

  4. Standards Verification

    • Confirm CSA C22.2 No. 38 marking on insulation

Packaging & Identification

Size Standard Length Reel Type Conductor Marking
350 MCM 500m Wood/steel reel [MFG] RW90 350 MCM 600V CU/XLPE [DATE]
400 MCM 500m Wood/steel reel [MFG] RW90 400 MCM 600V CU/XLPE [DATE]
500 MCM 300m Reinforced steel [MFG] RW90 500 MCM 600V CU/XLPE [DATE]

Custom lengths available (100m minimum)

Compliance & Safety

  • Certification: CSA C22.2 No. 38 (RW90)

  • Flame Rating: FT1 Vertical Flame Test

  • RoHS: Compliant

  • Conductor Identification: Size/voltage printed every 610mm

Optimized for Heavy-Current Distribution
This RW90 XLPE wire series provides CSA-certified performance for critical power feeds where conductor size matters. The combination of large-gauge copper and XLPE insulation delivers superior ampacity and thermal stability versus standard PVC wires, making it ideal for:

  • Service entrance conductors

  • Industrial plant main feeders

  • High-demand commercial applications

  • Critical infrastructure power links

Key Technical Notes:

  1. Ampacity based on 90°C conductor temperature in free air (30°C ambient)

  2. All sizes use identical 37-strand copper construction per ASTM B-8

  3. XLPE insulation thickness constant at 1.52mm across all sizes

  4. Weight approximations include conductor + insulation only