Building Automation Quad Solid Cables

Summary: Quad Solid Cables

Building Automation Cables for Commercial and Industrial Projects
Windy City Wire manufactures SmartWire® low-voltage control cables in the United States to meet the daily demands of building automation and control contractors. For BAS, DDC, and HVAC control circuits, our focus is straightforward: dependable performance, clean terminations, and faster installs that help crews stay on schedule and within budget.

Why SmartWire for BAS
SmartWire low-voltage cable is designed for point-to-point control wiring in commercial and industrial facilities—thermostats, sensors, actuators, relays, and controller I/O. TFN insulation with a 600 V rating supports robust control environments, while twisted conductor constructions help maintain signal integrity across long runs and dense mechanical rooms.

• Installation efficiency: SmartWire Glide Technology® lubrication is applied during manufacturing to the cable jacket, reducing pulling friction by up to 70% for smoother conduit pulls and fewer reworks.
• Reliable terminations: Solid bare copper conductors provide consistent connections at field devices and panels.
• Standardized identification: Clear conductor color coding (Black/White/Red/Green) streamlines device hookup and troubleshooting.
• Customization options: SmartWire offers a wide range of jacket and stripe color combinations to align with your company standards or project specifications. Contact our team to discuss custom color configurations.
• Predictable supply: Stock items are supplied in 1000 FT lengths to support planning, pulls, and material management across large projects.

Where It Fits in Your Project
Use SmartWire BAS cables for control loops, low-voltage interlocks, damper and valve actuation, temperature and pressure sensors, VAV boxes, and general controller I/O connections. The construction supports typical power-limited control circuits in new builds, retrofits, and service work across office towers, healthcare, education, data centers, manufacturing, and distribution facilities.

Available Construction

• 18 AWG 1 Quad Solid Bare Copper TFN 600 Volt: Twisted, unshielded quad for BAS control circuits with Black/White/Red/Green conductors and a nominal 0.201 in OD for clean pulls and consistent terminations.

Value to Your Team
Contractors and integrators choose Windy City Wire for dependable stock, consistent cable performance, and practical features that help reduce installation time and post-install troubleshooting. As a B2B partner, we focus on products and solutions that streamline the way your teams plan, pull, identify, and terminate low-voltage control wiring—job after job.

Talk with Windy City Wire
Need to standardize on a building automation cable, align color schemes across your organization, or plan for a multi-site rollout? Our team can help you select the right SmartWire construction and discuss custom jacket and stripe color options for your next project.

Solutions: Quad Solid Cables

Building Automation Quad Solid Cables from Windy City Wire are designed for professional integrators, contractors, and facility teams who need dependable control and power circuits that are straightforward to install, terminate, and maintain. The quad, solid bare copper construction with twisted lay and TFN 600-volt insulation supports a wide range of low-voltage building automation tasks while providing the durability required in commercial and industrial environments.

Where this cable fits in your projects

• HVAC and mechanical controls – Power and control runs to actuators and motors for dampers and valves, thermostat and controller interconnects, start/stop and enable signals, analog control loops (such as 0–10 V) and binary I/O, and relay coil circuits within air handlers, rooftop units, VAV boxes, fan coils, and central plant equipment.
• Lighting control interfaces – Low-voltage connections between control panels, room controllers, and field devices (occupancy/daylight sensors, relays, and interfaces). A four-conductor bundle allows you to combine power and control conductors in a single pull to many devices.
• Access and door hardware control – Auxiliary power and control wiring for strikes, maglocks, door position sensors, request-to-exit devices, and relay interfaces (use where permitted by local code and system specifications).
• Energy management and metering – Runs to transducers, current sensors, flow/pressure sensors, and pulse-output meters where you need both device power and signal leads in one cable.
• Controls inside panels and raceways – Control cabinet wiring, interlock circuits, and field terminations where a robust, 600-volt TFN insulation is preferred for mechanical protection and routing flexibility.
• General building automation field wiring – Powering and signaling to distributed I/O modules, controllers, and supervisory devices throughout the building.

Industries and facility types

• Commercial office, mixed-use, and corporate campuses
• Healthcare and laboratories (for non-life-safety controls)
• Education: K–12, higher ed, and research facilities
• Industrial plants, manufacturing, food and beverage, and utilities
• Warehousing and logistics centers
• Hospitality, entertainment, and venues
• Retail and shopping centers
• Government, public works, and transportation hubs
• Data centers and critical facilities (for supporting infrastructure controls)

Why a twisted quad, solid copper design helps

• Four conductors in one cable – Run device power and signal together, or serve multi-point I/O from a single pull, reducing conduit fills and homeruns.
• Twisted construction – Helps maintain signal quality and reduce coupling between conductors in typical building environments, supporting clean analog and digital control signals over practical distances.
• Solid bare copper – Ideal for fixed installations and screw/clamp terminals commonly found on actuators, sensors, and control modules, providing stable terminations.
• TFN 600-volt insulation – A tough, thermoplastic nylon-insulated building-wire construction that stands up to pulls, abrasion, and routing in raceways and control panels.
• Clear identification – Distinct conductor colors (black/white/red/green) simplify device hookups, documentation, and troubleshooting in the field.
• Unshielded versatility – Well-suited to short and medium control runs in typical EMI environments, with easier termination and lower material cost.

Common installation scenarios

• Home runs from control panels to field devices in mechanical rooms and equipment spaces
• Local drops from junction boxes to actuators, sensors, and relay modules
• Routing inside control cabinets for device interconnections and logic wiring
• Pulls in EMT or flexible raceways to rooftop units and air-handling equipment

Design and installation considerations

1. Plan conductor usage: dedicate a pair for device power and a pair for control or signaling to reduce interference and simplify terminations.
2. Maintain physical separation from high-noise sources and follow good grounding practices to maximize signal integrity with unshielded runs.
3. Confirm device current and voltage requirements to ensure appropriate conductor sizing and distance limits for your run lengths.
4. Use twisted quad to consolidate multiple control points, minimizing conduit congestion and the number of pulls.
5. Follow local codes and the authority having jurisdiction for raceway sharing, routing, and installation methods.

Built for B2B project demands

• Supports the daily needs of controls contractors, BAS integrators, electrical contractors, panel shops, and facility maintenance teams.
• Balances durability and ease of use to help crews move faster during rough-in, device trim-out, and commissioning.
• Color-coded conductors promote clean documentation and simplify service calls long after turnover.

If you’re standardizing a control wiring strategy across projects, this Building Automation Quad Solid Cable provides a dependable, easy-to-terminate option for powering and signaling the field devices that keep your systems running—helping you reduce installation time, streamline material takeoffs, and support long-term serviceability across your portfolio.

Frequently Asked Questions: Quad Solid Cables

• What AWG conductors are available with these SmartWire Building Automation Quad Solid cables?

  18 AWG.

• What other colorsare these SmartWire Building Automation Quad Solid cables available in?

  The standard conductor color code is Black/White/Red/Green. We also offer custom SmartWire® jacket and stripe color combinations to help standardize and identify your installations—contact Windy City Wire to discuss custom options.

• Are these SmartWire Building Automation Quad Solid cables made with solid or stranded copper conductors?

  Solid bare copper conductors in a quad (4-conductor) configuration.

• What lengths are these SmartWire Building Automation Quad Solid cables sold in?

  1,000 ft. At Windy City Wire, we manufacture and stock SmartWire Building Wire in 1,000 ft length as our standard length.

• Is SmartWire Building Automation Quad Solid Cables wet rated?

  Yes. Our THHN SmartWire cable is THWN/THHN dual rated for wet locations.

• Is SmartWire Building Automation Quad Solid Cables 600V rated?

  Yes. This TFN quad solid cable is rated 600 volts.

• What is difference between TFFN, TFN, and THHN ratings on SmartWire cables?
  • TFN: Thermoplastic insulation with a nylon jacket; 600V; typically used in dry locations up to 90°C; often solid in smaller gauges like 18 AWG.
  • TFFN: Similar construction to TFN but with a thinner wall and flexible (stranded) conductors; 600V; designed for dry locations up to 90°C where flexibility is preferred.
  • THHN/THWN: Thermoplastic high-heat, nylon-jacketed building wire; 600V; THHN is rated for dry locations up to 90°C, and the THWN dual rating adds wet-location suitability (commonly 75°C wet, 90°C dry depending on listing).

• Is SmartWire Building Wire Gas and Oil resistant?

  Yes. Our SmartWire Building Wire cables are GRII (Gas and Oil Resistant II) rated. This rating helps protect the insulation in environments where exposure to oils, gasoline, and related hydrocarbons may occur—supporting longer service life, improved safety, and reduced maintenance.

• Do you offer SmartWire Building Wire in twisted pairs?

  Yes. We offer SmartWire Building Wire in twisted constructions, including twisted pairs and quads, to meet specific application requirements.

• How is your SmartWire Building Wire cable sold on spools or in boxes?

  Our SmartWire Building Wire is packaged in our patented RackPack carton to help improve safety and efficiency while reducing labor costs. Learn more about our RackPack.

Additional Links:

• Learn more about our SmartWire Cable
• The RackPack - Our patented cable delivery solution
• Our Transporters - RackPack Transportation Devices
• 19 Stocking Locations Nationwide - Find a Branch near you