VW-1 cable is a type of wire or cable that has passed the VW-1 vertical flame test, indicating high flame-retardant performance. The “VW” stands for “Vertical Wire,” and this rating is critical for installations where fire safety is a concern—such as industrial control panels, data centers, and buildings with strict fire codes.
VW-1 Cable
If you're looking for fire-resistant wire, VW-1 is a recognized benchmark in North America.
🔍 What Does VW-1 Rating Mean?
The VW-1 test is defined by UL 1581 (Section 1080, vertical tray flame test). To pass:
A sample cable is suspended vertically and exposed to a controlled flame for 15 seconds.
The test is repeated five times.
The cable must self-extinguish and cannot ignite the cotton placed below it.
Passing this test means the cable has low flammability and self-extinguishing properties, making it suitable for UL-listed flame-resistant applications.
🔥 VW-1 vs FT-1 vs Other Flame Ratings
| Rating | Region | Flame Test Type | Flame Resistance Level |
|---|---|---|---|
| VW-1 | USA (UL) | Vertical Wire Flame | High |
| FT1 | Canada (CSA) | Vertical Flame Test | Similar to VW-1 |
| FT4 | Canada (CSA) | Tray Flame Test | Higher than FT1/VW-1 |
| UL 94 | Global | Material Flammability | For plastic materials |
Note: VW-1 ≈ FT1 in performance, but always follow local codes to determine what rating is required for your installation.
⚙️ Typical VW-1 Cable Types
VW-1 is not a specific type of cable—it’s a fire test rating. Many wire types can be VW-1 rated, such as:
THHN/THWN-2 Building Wires
MTW (Machine Tool Wire)
Hook-Up Wires
Multi-Conductor Control Cables
PVC-Insulated Data Cables
Flexible Cables for Robotics and Industrial Use
When you see “VW-1” in a wire spec sheet, it confirms that the cable complies with UL fire-resistance standards.
🧯 Where Is VW-1 Cable Used?
VW-1 rated wires are used in environments where fire containment is important:
📦 Electrical control panels
🏢 Commercial buildings
🏭 Factories and machine wiring
🚈 Transportation systems
🖥️ Data centers and telecom racks
🔌 Consumer electronics (internal wiring)
🚧 Conduit or duct installations where fire codes apply
🔎 Common Search Queries Related to VW-1 Cable
What is VW-1 rated cable?
VW-1 vs FT1 flame rating
Is VW-1 fire resistant?
VW-1 cable specification
VW-1 vs CMP vs CL2 ratings
VW-1 THHN wire meaning
VW-1 cable uses in building code
VW-1 vertical flame test UL 1581
🧠 Summary: Should You Choose VW-1 Cable?
Choose VW-1 rated wire or cable when your installation:
Must comply with UL fire safety codes
Involves vertical routing or enclosed spaces
Requires minimum flame spread and self-extinguishing insulation
Is subject to insurance or building code inspections
📞 Get VW-1 Certified Wire at TOT Wire & Cable
Looking for VW-1 flame-rated cables?
TOT Wire & Cable supplies:
UL-listed THHN/THWN-2, control cables, and hook-up wire with VW-1 rating
Bulk and custom lengths
Fast delivery and certification support
Competitive pricing for OEM, construction, or export
👉 Request a Quote Now to get technical specs and pricing for your VW-1 cable needs.
