Building Automation Single Conductor Solid Cables

Summary: Single Conductor Solid Cables

Building Automation SmartWire®

Windy City Wire manufactures low-voltage SmartWire® in the United States to support commercial and industrial building automation projects of any size. From control panels and VAV boxes to sensors, actuators and relay cabinets, our product line is engineered to help contractors and integrators standardize installations, maintain code compliance and reduce time on site. SmartWire is the brand name of the low-voltage cable we produce; it is not a technology. It is designed to be part of a complete field systems solution that improves safety and efficiency while helping reduce labor costs on every project.

Why choose SmartWire for Building Automation

• Built for BAS environments: Low-voltage constructions that support control circuits for HVAC, lighting control, access, and energy management in commercial and industrial facilities.
• SmartWire Glide Technology®: Our name for the cable lubrication applied to SmartWire jackets, reducing pulling friction by up to 70% to ease conduit runs and protect cable during installation. It has a low viscosity and is not visible or tactile on the jacket.
• FastFIND Footage Markers: Appear at two-foot intervals to help you confirm received footage, know remaining length at a glance and calculate point-to-point runs, promoting fuller use of each 1000-foot length and helping reduce waste by 15–25%.
• Consistent quality, made in the USA: Tight tolerances and reliable performance from a domestic manufacturer focused on low-voltage applications.
• Standardization and identification: Extensive options for jacket and stripe colors help teams standardize and quickly identify cabling across projects and service calls. Contact us to discuss custom color requirements.
• B2B support: Dedicated account teams and product specialists help you select constructions that align with conduit fill, bend radius, and panel density requirements typically encountered in BAS work.

Available options at a glance

• AWGs: 12, 14, 16
• Insulations: THHN, TFN
• Shielding: Non-shielded
• Lengths: 1000, 2000, 2500, 10500 feet
• Jacket and stripe colors: Standard and custom combinations available by request

How SmartWire adds value to your next BAS project

• Labor and schedule efficiency: Lower pulling friction and clear footage markers simplify planning, pulls and cut lengths, helping crews stay productive and reduce rework.
• Inventory control: Footage markers make remaining length verification straightforward, supporting purchasing, project staging and close-out.
• Consistency across sites: Repeatable constructions and color schemes help standardize installation practices across campuses and portfolios.
• Total installed performance: Unshielded, twisted and solid options match common BAS topologies, balancing ease of termination, conduit fill and noise mitigation considerations for low-voltage control circuits.

Available constructions

• 14 AWG 1 Pair Stranded THHN Twisted 600 Volt: Unshielded twisted pair for BAS control loops, sensors and actuator runs in conduit. Stranded conductors support flexible routing and reliable terminations for field devices.
• 12 AWG 1 Conductor Solid THHN 600 Volt: Solid single conductor for low-voltage control power and interlocks where lower voltage drop is desired over longer pulls. Well-suited for panel feeds and control circuits in conduit.
• 14 AWG 1 Conductor Solid THHN 600 Volt: General-purpose solid conductor for point-to-point BAS control wiring and terminations in panels and junction boxes. A practical balance of durability and ease of handling.
• 16 AWG 1 Conductor Solid TFN 600 Volt: Compact, solid fixture-grade conductor for dense control panels and shorter runs. Ideal where tighter bend radii and clean routing are priorities.

Get started

Whether you are standardizing a controls specification, staging for a fast-track retrofit or supporting a multi-building rollout, our SmartWire product offering gives you the combinations of gauge, insulation and construction you need—backed by domestic manufacturing and a team focused on low-voltage solutions. Contact Windy City Wire to review your bill of materials, confirm availability and discuss custom jacket and stripe colors for your organization.

Solutions: Single Conductor Solid Cables

Building Automation Single Conductor Solid Cables — Where They Fit and How They Support Your Projects

Windy City Wire’s Building Automation Single Conductor Solid Cables are designed for reliable, code-compliant control and power distribution within modern building automation systems. With multiple conductor sizes available (12, 14, and 16 AWG), 600-volt THHN and TFN insulation choices, and non-shielded constructions, these conductors are well suited for discrete control, power to devices, and cabinet wiring in commercial and industrial environments. Standard and extended footage options (1000, 2000, 2500, and 10,500 ft) help match project scale and reduce changeovers on large pulls.

Typical applications in Building Automation and Controls

• HVAC equipment control: Enable/disable circuits, safeties, end-switches, and alarm contacts for AHUs, RTUs, fan coil units, VAV/FPB boxes, and exhaust systems—run in raceway in dry locations up to 600V.
• Actuators and valves: Power and discrete control for damper and valve actuators, including open/close commands and end-of-travel status.
• Control panels and I/O: Terminations from field terminal strips to controllers, relay boards, and contactors inside BAS panels and mechanical equipment control cabinets.
• VFD interfaces: Start/stop, run indication, fault contacts, and permissive/interlock loops between variable frequency drives and central controllers.
• Pumps, boilers, and chillers: Remote start, proof-of-flow, status, and alarm interconnects across central plants and equipment rooms.
• Lighting control interfaces: Control and relay panel interlocks, occupancy and time-based control circuits, and pathways for low-voltage switching. When implementing analog dimming (for example, 0–10 V), these singles may be grouped in raceway as required by design and code.
• Access control infrastructure: Power and control for electrified hardware, REX devices, and relay interfaces when pulled as singles in conduit. For noise-sensitive or data lines, consider shielded or multi-conductor alternatives.
• Smoke control and life-safety interfaces: Control and monitoring ties between BAS and life-safety systems where permitted by code and authority having jurisdiction. Always verify specific code requirements for these circuits.
• Energy management and metering: Contact closures, pulse outputs, and discrete monitoring points for submeters and energy dashboards.

Industries and facility types that benefit

• Commercial office and corporate campuses: BAS control, lighting integration, and equipment interlocks across floors and central plants.
• Healthcare and laboratories: Environmental controls, isolation room pressure controls, and equipment status monitoring.
• Education (K–12 and higher ed): Classroom, lab, and central utility controls with clear routing in raceway systems.
• Industrial manufacturing and process facilities: Discrete I/O and interlocks for compressors, makeup air, process exhaust, and equipment controls.
• Warehousing, logistics, and cold storage: Controls for ventilation, destratification fans, refrigeration equipment, and monitoring points.
• Data centers and mission-critical: CRAH/CRAC controls, pump controls, and coordinated interlocks for redundancy and monitoring.
• Hospitality, entertainment, and retail: Lighting control, HVAC control, and interface wiring to central management systems.
• Government, municipal, and public sector: Standardized, maintainable control wiring within code-driven environments.

Why single conductor solid for these tasks?

• Stable terminations: Solid conductors seat securely under screw and cage-clamp terminals commonly used in BAS panels and equipment.
• Consistent routing in raceway: Singles are well suited to EMT and other raceway systems where circuits are separated and identified per drawings and standards.
• Clear circuit segmentation: Simplifies identification and maintenance of discrete control circuits, especially in large cabinet builds and mechanical rooms.

Selection guidance

• Conductor size (12, 14, 16 AWG):
  • 16 AWG: Common for short control loops and panel work.
  • 14 AWG: Use for longer runs or where inrush/current is higher (larger actuators, contactors).
  • 12 AWG: Choose for extended distances or higher load control circuits to manage voltage drop.
• Insulation type (THHN or TFN): Both are 600-volt, dry-location choices used widely in raceway and panels. TFN is often preferred for dense panel wiring; THHN is a common building wire selection for raceway pulls. Confirm temperature ratings and installation conditions with project specifications and codes.
• Shielding: Non-shielded constructions are ideal for discrete control and power-to-device circuits. For low-level analog or noise-sensitive signals, consider shielded options in other categories.
• Lengths: Available in 1000, 2000, 2500, and 10,500 ft options to align with project size, pulling plans, and staging needs.
• Environment: Use in dry locations and install in accordance with the NEC and local codes. Coordinate with the engineer of record for life-safety, smoke control, and specialty systems.

Common system wiring examples

1. Controller DO to actuator open/close with end-switch feedback via separate singles in conduit.
2. VFD start/stop and run/fault contacts to the BAS panel using appropriately sized singles.
3. Relay panel interlocks for lighting control routed in EMT with dedicated color identification per drawings.
4. Chiller plant interlocks—enable commands, pump proof-of-flow, and alarm contact wiring to the central controller.
5. Access control panel to door hardware power/control when specified as individual conductors in raceway.

Who benefits

• Controls contractors standardizing BAS panel builds and field terminations
• Electrical contractors pulling discrete circuits in conduit across mechanical and electrical rooms
• Panel shops and OEMs assembling control cabinets that require neat, reliable terminations
• Facility teams seeking maintainable wiring architectures for long-term serviceability

For assistance matching conductor size, insulation type, and footage to your scope, contact your Windy City Wire representative. We can help align product selection with your drawings, code requirements, and installation practices.

Frequently Asked Questions: Single Conductor Solid Cables

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

  Available in multiple gauges: 12 AWG, 14 AWG, and 16 AWG.

• What other colors are these SmartWire Building Automation Single Conductor Solid cables available in?

  SmartWire offers a wide range of jacket and stripe color options, including custom color and stripe combinations to standardize your installations and aid identification. Contact Windy City Wire to discuss available and custom color options.

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

  The single-conductor building automation cables in this category use solid copper conductors. Stranded options are available in related twisted-pair offerings.

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

  At Windy City Wire, we manufacture and stock SmartWire Building Wire in 1,000 ft lengths as our standard. Additional lengths are available on select items: 2,000 ft, 2,500 ft, and 10,500 ft.

• Is SmartWire Building Automation Single Conductor Solid Cables wet rated?

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

• Is SmartWire Building Automation Single Conductor Solid Cables 600V rated?

  Yes. These SmartWire building automation cables are rated 600 volts.

• What is difference between TFFN, TFN, and THHN ratings on SmartWire cables?

  • THHN: Thermoplastic high-heat, nylon-jacketed building wire, 600V; typically dual rated THHN/THWN for wet locations (THHN/THWN).
  • TFN: Thermoplastic fixture wire with nylon jacket, 600V; typically used in dry locations; commonly a solid conductor in this category.
  • TFFN: Similar to TFN but “FF” indicates a flexible, stranded fixture wire, 600V; used in dry locations and where flexibility is desired.

• Is SmartWire Building Wire Gas and Oil resistant?

  Yes. Our SmartWire Building Wire cables are GRII (Gas & Oil Resistant II) rated, providing enhanced durability in environments where exposure to gasoline, oils, and lubricants may occur. This helps maintain insulation integrity, extend service life, and reduce maintenance or replacement due to chemical exposure.

• Do you offer SmartWire Building Wire in twisted pairs?

  Yes. We offer unshielded twisted-pair SmartWire options in 14 AWG, 16 AWG, and 18 AWG (stranded) at 600V for building automation applications.

• 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 maximize labor savings and jobsite efficiency. Learn more about our RackPack: https://windycitywire.com/solutions/rackpack-overview

Additional Links:

• Learn more about our SmartWire Cable
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