Summary of UL Style 1321
UL Style 1321 is a designation for a single-conductor appliance wiring material used in internal wiring applications. It is insulated with extruded PVC and coated with extruded nylon, suitable for temperatures up to 90 or 105°C and 600 volts AC. This style meets flame resistance and oil resistance standards under UL 758, with variations in thickness based on conductor size.
Specifications
- Temperature Rating: 90°C or 105°C
- Voltage Rating: 600 Vac
- Flame Resistance: Horizontal flame
- Oil Resistance: 60°C or 80°C
- Conductor Sizes: 250-1000 kcmil, stranded
- Insulation Material: Extruded PVC
- Covering Material: Extruded Nylon
- Minimum Thickness (Insulation): 60 mils for 250-500 kcmil, 70 mils for 501-1000 kcmil
- Minimum Thickness (Covering): 8 mils for 250-500 kcmil, 9 mils for 501-1000 kcmil
- Standard: UL 758
- Marking: General
- Application: Internal wiring
See more information about UL Style 1321 here.
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*Disclaimer: This article is provided for informational purposes only and is not installation advice. Installing wire & cable can be dangerous and pose a risk of possible electric shock or other hazards. Consult a licensed professional for installation advice. Images are for illustration purposes and may not reflect actual installed products.