


UL 3580 Silicone Motor Lead Wire, 150°C 1000V
UL 3580 is a UL-certified silicone motor lead wire rated 150°C and 1000 V AC. It is intended for motor leads and internal appliance or electronic equipment wiring where the lead is protected from mechanical abuse.
- Voltage: 1000 V AC
- Temperature: 150°C
- Insulation / covering: extruded silicone rubber
- Size selection: 26 AWG–500 kcmil style range; table: 26–6 AWG
- Certification: UL-certified AWM; UL 758
UL 3580 wire selection
UL 3580 is a UL-certified silicone motor lead wire rated 150°C and 1000 V AC. It is intended for motor leads and internal appliance or electronic equipment wiring where the lead is protected from mechanical abuse.
The detailed size table covers 26–6 AWG. Nominal silicone thickness is 1.20 mm in the 26–10 AWG rows and 1.58 mm in the 8–6 AWG rows. Conductor stranding and finished diameter are listed with each model-size combination to help check motor terminal entries, connection boxes and protective sleeves. A separate insulation schedule explains the larger conductor groups within the style range.
For a motor connection, allow space for the finished wire rather than selecting the entry around the bare conductor size. The listed construction uses a bend radius of 10 times its finished diameter. Check the temperature near the winding exit and at the connection hardware, because the 150°C wire rating must be compatible with the rest of the assembly.
See the Specifications tab for the model and size tables. Browse the high-temperature cable range for related constructions. Compare UL 3644 for a different 1 kV wall schedule and the silicone hook-up wire family for lower-voltage options.
Construction
UL 3580 uses the following conductor and insulation system. The diagram illustrates the layer sequence; select the conductor construction and covering shown in the required size specification.

| Component | Construction detail |
|---|---|
| Conductor | Solid or stranded copper; dimensioned examples are stranded |
| Insulation | Extruded silicone rubber |
Applications
UL 3580 is used as motor lead wire and for internal appliance or electronic equipment wiring. Route and support the lead to prevent rubbing or mechanical damage at the winding exit and terminal enclosure.

UL 3580 replacement selection
For replacement enquiries, include the existing wire marking and the equipment connection drawing so the conductor, insulation and terminal arrangement can be matched.
Specifications
| Parameter | Specification |
|---|---|
| UL style | UL 3580 |
| Voltage rating | 1000 V AC |
| Temperature rating | 150°C |
| Insulation / covering | extruded silicone rubber |
| Conductor size coverage | 26 AWG–500 kcmil style range; table: 26–6 AWG |
| Bending radius for listed construction | 10 × finished OD |
Nominal dimensions follow the listed conductor constructions. Confirm the agreed finished-diameter drawing for tight-clearance assemblies.
| Model and conductor size | Stranding (No./mm) | Nominal silicone wall (mm) | Nominal OD / tolerance (mm) |
|---|---|---|---|
| UL 3580 6 AWG | 259/0.254 | 1.58 | 7.89 ±0.10 |
| UL 3580 8 AWG | 161/0.254 | 1.58 | 6.88 ±0.10 |
| UL 3580 10 AWG | 105/0.254 | 1.20 | 5.41 ±0.10 |
| UL 3580 12 AWG | 65/0.254 | 1.20 | 4.77 ±0.10 |
| UL 3580 14 AWG | 41/0.254 | 1.20 | 4.28 ±0.10 |
| UL 3580 16 AWG | 26/0.254 | 1.20 | 3.90 ±0.10 |
| UL 3580 18 AWG | 34/0.18 | 1.20 | 3.62 ±0.10 |
| UL 3580 20 AWG | 21/0.18 | 1.20 | 3.36 ±0.10 |
| UL 3580 22 AWG | 17/0.16 | 1.20 | 3.17 ±0.10 |
| UL 3580 24 AWG | 11/0.16 | 1.20 | 3.02 ±0.10 |
| UL 3580 26 AWG | 7/0.16 | 1.20 | 2.89 ±0.10 |
Style construction thicknesses are shown in mils; 1 mil = 0.0254 mm. Nominal finished dimensions are listed separately.
| Model and conductor group | Minimum average silicone wall (mils) | Minimum point wall (mils) |
|---|---|---|
| UL 3580 26–9 AWG | 45 | 40 |
| UL 3580 8–2 AWG | 60 | 54 |
| UL 3580 1–4/0 AWG | 80 | 72 |
| UL 3580 250–500 kcmil | 95 | 86 |
Selecting the specified construction
Specify UL 3580 with AWG or kcmil, stranding, required OD and connection temperature. For a size outside the dimension table, use the insulation schedule as a starting point and request the corresponding drawing.
Standards
TEBAOFLEX UL 3580 wire is UL-certified appliance wiring material.
| Item | Requirement or reference |
|---|---|
| Certification | UL-certified AWM |
| Style designation | UL 3580 |
| Construction standard | UL 758 — Appliance Wiring Material |
| Style flame classification | Horizontal flame |
Identify the UL style, conductor size, voltage and temperature grade on the purchasing specification. Include the required product identification and certification documents with the enquiry.
Request a cable recommendation and quotation
Send the required services, cable length, mechanical duty, environment, termination and quantity. Our team will review the application before quoting.
- Include the product name or SKU plus the required cable length and quantity.
- Attach a specification, drawing or data sheet when available.

