From $0.20/ft
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Solid THHN/THWN-2 WireFrom $0.20/ft -
Solid THHN/THWN-2 WireFrom $0.20/ft - Solid THHN/THWN-2 WireFrom $0.20/ft
- Solid THHN/THWN-2 WireFrom $0.20/ft
Parent SKU : 16SIS-3320
SKU : 16SIS-3320-250-BK
This 16 AWG UL 3320 hook-up wire is a high-performance internal wiring solution designed for applications that require a durable, moisture-resistant insulation system. Built with chemically cross-linked polyethylene (XLPE), this wire provides a rugged "thermoset" jacket that maintains its mechanical and electrical integrity under thermal stress.
UL 3320 is a specialized industrial standard for lead wire in electrical equipment where environmental resistance is a priority. The 16-gauge conductor offers a versatile balance of flexibility and current-carrying capacity, making it ideal for control circuits and general-purpose power leads. Unlike standard PVC, the XLPE insulation will not soften, melt, or deform when exposed to soldering heat or high-ambient temperatures, ensuring maximum reliability during assembly and operation.
Premium XLPE Insulation: The cross-linked polyethylene jacket offers superior dielectric strength and exceptional resistance to environmental stress cracking.
90°C Thermal Rating: Designed for continuous, stable operation in environments reaching up to 90°C (194°F).
Tinned Copper Conductor: Features annealed tinned copper strands that provide high electrical conductivity and elite protection against corrosion and oxidation at terminal points.
Mechanical Toughness: Highly resistant to abrasion, cut-through, and crushing, which is critical for maintaining circuit integrity in high-vibration industrial enclosures.
Chemical & Oil Resistance: The insulation remains stable when exposed to common industrial oils, acids, alkalis, and solvents.
Regulatory Compliance: Fully meets the requirements for UL Style 3320 and is rated for 600V service.
Conductor Size: 16 AWG
Stranding: 26/30 (Standard Flexibility)
Voltage Rating: 600V
Temperature Rating: 90°C (194°F)
Insulation Material: Cross-linked Polyethylene (XLPE)
Insulation Thickness: 0.045 inches (1.14 mm)
Nominal Outer Diameter: 0.150 inches (3.81 mm)
Approvals: UL 3320
Motor and Transformer Leads: Used for internal connections where vibration resistance and thermal stability are required.
Industrial Control Panels: Ideal for point-to-point wiring and control signal distribution in high-reliability cabinets.
Commercial Appliances: Suitable for the internal wiring of equipment exposed to consistent heat cycles.
Power Supplies: Preferred for internal wiring in industrial power conversion systems.
Technical Note: All dimensions and stranding counts are nominal and may vary slightly by manufacturer. UL 3320 is intended for the internal wiring of equipment and is not approved for use as a portable cord or for structural building wiring.
SPECIFICATION: UL Style 3320
| Wire Size (AWG/MCM) | 16 AWG |
| Conductor Material | Tinned Copper |
| Conductor Type | Stranded |
| Strand Count | 26 |
| Outer Diameter (OD) (in/mm) | 0.120 in. / 3.05 mm |
| Conductor Count | 1 |
| Shield | Unshielded |
| Insulation Type | XLPE |
| UL Listing Numbers | UL 3320, UL 44, UL 758 |
| Voltage Rating | 600V |
| Submersible | No |
| Temperature Rating | 90ºC |
| Standards | UL 44 VW-1 Flame Test, UL 758 Style 3320 NEC Type SIS NEMA SG 5 |
| Miscellaneous Information | All values are nominal and subject to correction. |
| Primary Applications | Switchboards, Control and Power Circuits, Applications up to 90° and 600 volts. |
| Common Uses |
|
| Weight per Foot | 0.012 lb |
In-stock orders placed before 3pm EST typically ship within 1-2 business days. Our business days are Monday through Friday; we do not process orders on Saturday, Sunday, or major US Holidays.
You will receive an e-mail with a tracking number within 1-2 business days from the time its shipped. You will also be able to view your order status and tracking numbers in your account order history.
Expedited shipments are delivered Monday-Friday except on US Holidays. The order must be placed before 12pm CST to ship same day ( Mon-Fri Only).
You have 30 days from the day you receive the item to contact us for a return. Returns are subject to a 30% Restocking Fee.
Please contact us at help@wireamerica.com to request a return authorization. Have your order number or name the order was placed with ready and we will email you an RMA (return) number and instructions for return. Currently, we do not offer exchanges. A new order must be placed if you need a different item. If you provide the new order number at the time of your return request, the restocking fee may be lowered.
Orders on any items with a material value of $50 or less are non-returnable.
Parent SKU : 16SIS-3320
SKU : 16SIS-3320-250-BK
Parent SKU : 16SIS-3320
SKU : 16SIS-3320-250-BK
This 16 AWG UL 3320 hook-up wire is a high-performance internal wiring solution designed for applications that require a durable, moisture-resistant insulation system. Built with chemically cross-linked polyethylene (XLPE), this wire provides a rugged "thermoset" jacket that maintains its mechanical and electrical integrity under thermal stress.
UL 3320 is a specialized industrial standard for lead wire in electrical equipment where environmental resistance is a priority. The 16-gauge conductor offers a versatile balance of flexibility and current-carrying capacity, making it ideal for control circuits and general-purpose power leads. Unlike standard PVC, the XLPE insulation will not soften, melt, or deform when exposed to soldering heat or high-ambient temperatures, ensuring maximum reliability during assembly and operation.
Premium XLPE Insulation: The cross-linked polyethylene jacket offers superior dielectric strength and exceptional resistance to environmental stress cracking.
90°C Thermal Rating: Designed for continuous, stable operation in environments reaching up to 90°C (194°F).
Tinned Copper Conductor: Features annealed tinned copper strands that provide high electrical conductivity and elite protection against corrosion and oxidation at terminal points.
Mechanical Toughness: Highly resistant to abrasion, cut-through, and crushing, which is critical for maintaining circuit integrity in high-vibration industrial enclosures.
Chemical & Oil Resistance: The insulation remains stable when exposed to common industrial oils, acids, alkalis, and solvents.
Regulatory Compliance: Fully meets the requirements for UL Style 3320 and is rated for 600V service.
Conductor Size: 16 AWG
Stranding: 26/30 (Standard Flexibility)
Voltage Rating: 600V
Temperature Rating: 90°C (194°F)
Insulation Material: Cross-linked Polyethylene (XLPE)
Insulation Thickness: 0.045 inches (1.14 mm)
Nominal Outer Diameter: 0.150 inches (3.81 mm)
Approvals: UL 3320
Motor and Transformer Leads: Used for internal connections where vibration resistance and thermal stability are required.
Industrial Control Panels: Ideal for point-to-point wiring and control signal distribution in high-reliability cabinets.
Commercial Appliances: Suitable for the internal wiring of equipment exposed to consistent heat cycles.
Power Supplies: Preferred for internal wiring in industrial power conversion systems.
Technical Note: All dimensions and stranding counts are nominal and may vary slightly by manufacturer. UL 3320 is intended for the internal wiring of equipment and is not approved for use as a portable cord or for structural building wiring.
SPECIFICATION: UL Style 3320
| Wire Size (AWG/MCM) | 16 AWG |
| Conductor Material | Tinned Copper |
| Conductor Type | Stranded |
| Strand Count | 26 |
| Outer Diameter (OD) (in/mm) | 0.120 in. / 3.05 mm |
| Conductor Count | 1 |
| Shield | Unshielded |
| Insulation Type | XLPE |
| UL Listing Numbers | UL 3320, UL 44, UL 758 |
| Voltage Rating | 600V |
| Submersible | No |
| Temperature Rating | 90ºC |
| Standards | UL 44 VW-1 Flame Test, UL 758 Style 3320 NEC Type SIS NEMA SG 5 |
| Miscellaneous Information | All values are nominal and subject to correction. |
| Primary Applications | Switchboards, Control and Power Circuits, Applications up to 90° and 600 volts. |
| Common Uses |
|
| Weight per Foot | 0.012 lb |
In-stock orders placed before 3pm EST typically ship within 1-2 business days. Our business days are Monday through Friday; we do not process orders on Saturday, Sunday, or major US Holidays.
You will receive an e-mail with a tracking number within 1-2 business days from the time its shipped. You will also be able to view your order status and tracking numbers in your account order history.
Expedited shipments are delivered Monday-Friday except on US Holidays. The order must be placed before 12pm CST to ship same day ( Mon-Fri Only).
You have 30 days from the day you receive the item to contact us for a return. Returns are subject to a 30% Restocking Fee.
Please contact us at help@wireamerica.com to request a return authorization. Have your order number or name the order was placed with ready and we will email you an RMA (return) number and instructions for return. Currently, we do not offer exchanges. A new order must be placed if you need a different item. If you provide the new order number at the time of your return request, the restocking fee may be lowered.
Orders on any items with a material value of $50 or less are non-returnable.
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Physical Specifications
Technical Specifications
Usage & Installation:
Packaging & Dimensions:
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UL 3320 is engineered for high-reliability internal wiring in appliances and motor leads. Its 90°C thermal rating and durable XLPE insulation make it a preferred choice for control panels, transformers, and switchboard applications where long-term thermal stability is critical.
In precision control systems, insulation integrity is the difference between a running machine and a costly short circuit.
Think of 16 AWG as the "nervous system" of your machine. It’s not meant to carry the massive power for a large motor, but it’s perfect for the signals, buttons, sensors, and indicator lights that tell the machine what to do. It’s the go-to size for reliable internal logic wiring.
It’s actually the best of both worlds. Inside is high-quality copper for great electricity flow, but it’s been "Tinned" with a silver-colored coating. This acts like a protective "skin" that stops the copper from rotting or turning black over time, which is exactly what happens to standard wire in a hot or damp factory.
That is the magic of XLPE. Standard wire insulation is like a chocolate bar—it melts as soon as it gets hot. XLPE is more like a baked cake; once it's made, it stays solid. When you solder these 16-gauge wires into a plug, the insulation stays put and doesn't pull back or turn into a gooey mess.
Absolutely. Because this wire handles 90°C (194°F) and resists oils and chemicals, it’s a massive upgrade for automotive or marine wiring. It won't get brittle and crack like the cheap primary wire you find at the local hardware store, meaning your sensors will keep working even after years of engine heat.
Headphone wires are designed to be floppy and soft. This wire is designed to be "Tough." The XLPE insulation is a hard, protective shell. It’s built this way so that if the wire is vibrating against a metal frame all day, it won't rub through and cause a fire. It’s meant for "set it and forget it" industrial reliability.
While both utilize XLPE insulation and are rated for 600V, the main difference is the temperature rating. UL 3320 is rated for 90°C, whereas UL 3173 is typically rated for 125°C. Use UL 3320 for cost-effective performance in standard temperature environments, and step up to UL 3173 only if your application exceeds 90°C.
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