THHN & TelcoFlex® L4 Wire – Power Solutions for Every Install

At Sky High Supply, we carry both THHN (Thermoplastic High Heat Nylon-coated) wire and Southwire TelcoFlex® L4 cables, giving field pros the flexibility and durability they need for nearly any power distribution setup.

THHN wire is a trusted standard for general-purpose building wiring — ideal for conduit runs, control panels, and circuit wiring in commercial and industrial environments. It’s lightweight, versatile, and easy to pull — perfect for everyday electrical installations.

TelcoFlex® L4 cables, on the other hand, are purpose-built for telecom, CATV, and data applications. With tinned copper conductors, TelcoHyde® 5221 insulation, and UL Cable Tray (CT USE) compliance, these heavy-duty cables are trusted for central office, cell tower, and mission-critical power applications.

14 products

  • #6 Green Stranded THHN Wire (Per Foot)
    Sky High Supply Company

    #6 Green Stranded THHN Wire (Per Foot)

    $2.00
    $2.00

    #6 Green Stranded THHN Wire Sold Per Foot Jacket Color: Green Jacket Material: Nylon Stranding: 19 Gauge: 6AWG Manufacture: Southwire CSA/UL Listed

  • #2 Green Stranded THHN Wire (Per Foot)
    Sold out
    Sky High Supply Company

    #2 Green Stranded THHN Wire (Per Foot)

    $4.25
    $4.25

    #2 Green Stranded THHN Wire Sold By Foot Jacket Color: Green Stranding: 19 Gauge: 2 Manufacture: Southwire CSA/UL Listed

  • #6 Black Stranded THHN Wire (Per Foot)
    Sky High Supply Company

    #6 Black Stranded THHN Wire (Per Foot)

    $2.00
    $2.00

    #6 Black Stranded THHN Wire Sold Per Foot Jacket Color: Black Jacket Material: Nylon Stranding: 19 Gauge: 6AWG Manufacture: Southwire CSA/UL Listed

  • #6 Red Stranded THHN Wire (500' Spool)
    Sky High Supply Company

    #6 Red Stranded THHN Wire (500' Spool)

    $1,000.00
    $1,000.00

    #6 Red Stranded THHN Wire Sold in 500' Spools Jacket Color: Red Jacket Material: Nylon Stranding: 19 Gauge: 6AWG Manufacture: Southwire CSA/UL Listed

  • #6 Black Stranded THHN Wire (500' Spool)
    Sky High Supply Company

    #6 Black Stranded THHN Wire (500' Spool)

    $1,000.00
    $1,000.00

    #6 Black Stranded THHN Wire Sold in 500' Spools Jacket Color: Black Jacket Material: Nylon Stranding: 19 Gauge: 6AWG Manufacture: Southwire CSA/UL Listed

  • #6 Red Stranded THHN Wire (Per Foot)
    Sky High Supply Company

    #6 Red Stranded THHN Wire (Per Foot)

    $2.00
    $2.00

    #6 Red Stranded THHN Wire Sold Per Foot Jacket Color: Red Jacket Material: Nylon Stranding: 19 Gauge: 6AWG Manufacture: Southwire CSA/UL Listed

  • #10 Black Stranded THHN Wire (Per Foot) by Sky High Supply Company
    #10 Black Stranded THHN Wire (Per Foot) by Sky High Supply Company
    Sky High Supply Company

    #12 Black Stranded THHN Wire (Per Foot)

    $0.50
    $0.50

    #12 Black Stranded THHN Wire Sold By Foot Maximum Length 500' Spool Jacket Color: Black Stranding: 19 Gauge: 12 CSA/UL Listed

  • #10 Red Stranded THHN Wire (Per Foot) by Sky High Supply Company
    #10 Red Stranded THHN Wire (Per Foot) by Sky High Supply Company
    Sky High Supply Company

    #12 Red Stranded THHN Wire (Per Foot)

    $0.50
    $0.50

    #12 Red Stranded THHN Wire Sold By Foot Maximum Length 500' Spool Jacket Color: Red Stranding: 19 Gauge: 12 CSA/UL Listed

  • #6 Green Stranded THHN Wire (500' Spool)
    Sky High Supply Company

    #6 Green Stranded THHN Wire (500' Spool)

    $1,000.00
    $1,000.00

    #6 Green Stranded THHN Wire Sold in 500' Spools Jacket Color: Green Jacket Material: Nylon Stranding: 19 Gauge: 6AWG Manufacture: Southwire CSA/UL Listed

  • 1/0 Black THHN Wire (Sold Per Foot)
    Sold out
    Sky High Supply Company

    1/0 Black THHN Wire (Sold Per Foot)

    $4.75
    $4.75

    1/0 Black Stranded THHN Wire Sold By Foot Jacket Color: Black Stranding: 19 Gauge: 1/0 Manufacture: Southwire CSA/UL Listed

  • #12 Green Stranded THHN Wire (Per Foot)
    Sky High Supply Company

    #12 Green Stranded THHN Wire (Per Foot)

    $0.50
    $0.50

    #12 Green Stranded THHN Wire Sold By Foot Maximum Length 500' Spool Jacket Color: Green Stranding: 19 Gauge: 12 CSA/UL Listed

  • #8 Green Stranded THHN Wire (Per Foot)
    Sky High Supply Company

    #8 Green Stranded THHN Wire (Per Foot)

    $1.85
    $1.85

    #8 Green Stranded THHN Wire Sold Per Foot Maximum Spool 500' Jacket Color: Green Jacket Material: Nylon Stranding: 19 Gauge: 8AWG CSA/UL Listed

  • #10 Red Stranded THHN Wire (Per Foot) by Sky High Supply Company
    #10 Red Stranded THHN Wire (Per Foot) by Sky High Supply Company
    Sky High Supply Company

    #10 Red Stranded THHN Wire (Per Foot)

    $0.75
    $0.75

    #10 Red Stranded THHN Wire Sold By Foot Maximum Length 500' Spool Jacket Color: Red Stranding: 19 Gauge: 10 CSA/UL Listed

  • #10 Black Stranded THHN Wire (Per Foot) by Sky High Supply Company
    #10 Black Stranded THHN Wire (Per Foot) by Sky High Supply Company
    Sky High Supply Company

    #10 Black Stranded THHN Wire (Per Foot)

    $0.75
    $0.75

    #10 Black Stranded THHN Wire is designed for reliable electrical performance in both commercial and industrial applications. Its 19-strand copper conductor provides flexibility for easy routing...