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CSA C22.2 No. 150-16 (2017): Safety Requirements for Communication Cables in Building Applications
A comprehensive technical review of the scope, testing protocols, and compliance framework for communication cables under the Canadian Electrical Code
Communication cables form the backbone of modern building infrastructure, enabling voice, data, and video transmission for commercial, industrial, and residential applications. In Canada, the safety requirements for these cables are defined by CSA C22.2 No. 150-16 (2017), one of the most widely referenced standards in the CSA C22.2 series. This article provides a detailed technical examination of the standard’s scope, key test parameters, and the compliance processes required to meet the stringent safety expectations of the Canadian Electrical Code (CEC).
Scope and Application
CSA C22.2 No. 150-16 (2017) applies to communication cables intended for indoor installation in buildings within Canada. The standard covers coaxial, twisted-pair, telephone, and data cables that operate at voltages not exceeding 300 V. It includes cables used in riser, plenum, and general-purpose spaces, and explicitly excludes power cables, fiber optic cables (though some test methods may overlap), and cables intended for outdoor or direct burial applications. The standard is referenced by CEC Part I and is often adopted by provincial authorities having jurisdiction (AHJs) for all new building construction and major renovations.
Technical Requirements
Fire and Smoke Performance
Fire safety is the cornerstone of CSA C22.2 No. 150-16 (2017). Cables are classified into flame‑test ratings—most commonly FT4 (vertical tray test) for riser cables and FT6 (plenum test) for cables used in air‑handling spaces. The required performance parameters are summarized in the table below.
| Test Parameter | FT4 (Vertical Tray) | FT6 (Plenum / Steiner Tunnel) |
|---|---|---|
| Applied test method | CSA C22.2 No. 0.3 (FT4) | NFPA 262 / UL 910 |
| Flame spread length (maximum) | 1.5 m | 1.5 m |
| Peak heat release rate (maximum) | N/A | 100 kW |
| Average smoke density (maximum) | N/A | 0.5 (optical density units) |
| Flame duration after burner shutoff | ≤ 60 s | ≤ 5 s |
In addition to the FT4/FT6 classifications, the standard includes requirements for acid gas emission and halogen content, especially for cables intended for critical life‑safety systems. All fire tests are conducted on representative cable samples that have been preconditioned to simulate real‑world installation aging.
Electrical and Mechanical Requirements
To ensure reliable signal transmission and safe operation under fault conditions, CSA C22.2 No. 150-16 (2017) specifies the following key electrical tests:
- Conductor resistance: Measured per ASTM B193, with maximum values based on gauge (e.g., 24 AWG ≤ 0.084 Ω/m).
- Dielectric withstand: Cables must withstand 1500 V RMS (60 Hz) for one minute without breakdown.
- Insulation resistance: Minimum 500 MΩ·km at 500 V DC after water immersion.
Mechanical robustness is verified through cold‑bend testing at –20 °C, impact resistance (e.g., 0.5 J drop weight), and tensile/handling tests that simulate installation stresses. Cables must maintain electrical integrity after these mechanical exposures.
Marking, Documentation, and Quality Assurance
Every cable manufactured under this standard must be permanently marked at intervals not exceeding 600 mm. The marking includes the manufacturer’s identifier, cable type and gauge, the year of manufacture, and the applicable CSA certification mark along with the FT rating (e.g., “/FT4” or “/FT6”). Quality assurance plans require traceability from raw material lot through finished product. Accredited third‑party certification bodies (e.g., CSA Group, UL) verify compliance through initial type testing and periodic follow‑up inspections at the factory.
Implementation and Compliance
Certification Pathways
To gain approval for use in Canada, manufacturers must submit their cables to an accredited certification organization. The process includes:
- Full evaluation of fire, electrical, and mechanical performance against the standard’s clauses.
- Review of the manufacturer’s quality management system (often ISO 9001 or a recognized equivalent).
- Granting of a certificate of compliance and authorization to apply the CSA mark (or equivalent NRTL mark) on the cable.
Once certified, the product is listed in the certification body’s online directory, enabling specifiers and inspectors to verify listing status in real time.
When selecting communication cables for a project, always confirm that the FT rating matches the building environment: FT6 for plenum air‑handling spaces, FT4 for riser shafts, and FT1 for general‑purpose areas where local codes permit.
Field Compliance and Inspection
During construction, AHJs will request proof of listing for all communication cables. Installing cables that are not certified to the 2017 edition may result in a failure to meet CEC rules and delay occupancy approvals. Moreover, the 2017 edition introduced more stringent smoke density measurements and required FT6 cables to limit peak heat release, upgrading the safety performance compared to earlier editions.
Cables carrying certification marks from older editions of CSA C22.2 No. 150 (e.g., the 2006 edition) may not be accepted for new installations in jurisdictions that have adopted the 2017 edition. Check with the local AHJ before purchasing surplus or leftover cable stock.
Emerging Trends and Life‑Cycle Considerations
The 2017 edition of this standard also pays close attention to environmental sustainability. It encourages manufacturers to reduce halogen content and to provide environmental product declarations (EPDs) for their cables. Future editions are expected to address higher‑speed data cables (Category 6A and beyond) and include more sophisticated arc‑propagation tests for low‑voltage circuits.
Adopting cables that meet CSA C22.2 No. 150-16 (2017) not only facilitates code acceptance but also provides a clear path to reduced liability, improved life‑safety performance, and greater market confidence.
Using uncertified or inadequately rated communication cables in hazardous locations (e.g., spaces with fire‑stop penetrations, plenums, or near emergency systems) can propagate fire and toxic smoke, endangering building occupants and exposing the installer to severe legal and financial consequences. Insist on a valid certification mark for every coil and reel.
Frequently Asked Questions
Q: What is the main difference between FT4 and FT6 ratings under this standard?
A: FT4 is based on the vertical tray flame test (CSA C22.2 No. 0.3) and measures flame spread only. FT6 uses the Steiner tunnel test (NFPA 262) and additionally limits heat release and smoke density, making it mandatory for plenum (air‑return) spaces.
A: FT4 is based on the vertical tray flame test (CSA C22.2 No. 0.3) and measures flame spread only. FT6 uses the Steiner tunnel test (NFPA 262) and additionally limits heat release and smoke density, making it mandatory for plenum (air‑return) spaces.
Q: Does CSA C22.2 No. 150-16 (2017) apply to fiber optic cables?
A: The standard is primarily written for metallic (copper) communication cables. However, the fire test methods can be applied to fiber optic cables if they contain metallic components or serve analogous communications functions. Dedicated fiber optic standards such as CSA C22.2 No. 0.15 are also available.
A: The standard is primarily written for metallic (copper) communication cables. However, the fire test methods can be applied to fiber optic cables if they contain metallic components or serve analogous communications functions. Dedicated fiber optic standards such as CSA C22.2 No. 0.15 are also available.
Q: How can I quickly verify that a cable product is certified to the 2017 edition?
A: Look for the CSA or other NRTL certification mark on the jacket. The marking will include the standard designation (e.g., “CSA C22.2 No. 150-16”) and the FT rating. You can also cross-reference the manufacturer’s listing in the certification body’s public directory.
A: Look for the CSA or other NRTL certification mark on the jacket. The marking will include the standard designation (e.g., “CSA C22.2 No. 150-16”) and the FT rating. You can also cross-reference the manufacturer’s listing in the certification body’s public directory.
Q: Are there transitional provisions for products certified to earlier editions?
A: Each certification body handles transitions individually, but in general, certificates issued under the 2006 edition expired a few years after the 2017 edition was published. Manufacturers were given a grace period to re‑qualify their products. Always verify that your cable’s certification explicitly references the 2017 edition.
A: Each certification body handles transitions individually, but in general, certificates issued under the 2006 edition expired a few years after the 2017 edition was published. Manufacturers were given a grace period to re‑qualify their products. Always verify that your cable’s certification explicitly references the 2017 edition.
— Published 2026 —