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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 : 10SIS-3173
SKU : 10SIS-3173-500-BK
The professional standard for high-density control panels—engineered with high-performance XLPE insulation and tinned copper for maximum reliability in environments up to 125°C."
The 10 AWG SIS wire is a high-output, high-temperature conductor designed for heavy-duty electrical systems, fully compliant with UL 3173 standards. It is the primary choice for main power feeds in industrial switchgear and high-current control panels. Our Cross-linked polyethylene (XLP) insulation is thermoset, ensuring that even under heavy electrical loads, the jacket maintains its physical integrity without melting or becoming brittle.
125°C Heat Resistance: Rated for continuous use in extreme thermal environments where standard building wire (90°C) fails.
Tinned Copper Conductor: Features a tin coating over the stranded copper to prevent corrosion and ensure effortless soldering and termination in high-humidity panels.
Chemically Cross-Linked (XLP): The insulation is chemically bonded to ensure it maintains structural integrity under extreme heat.
UL 3173 / CSA CL1251 Rated: Fully compliant with industrial standards for switchgear, control circuits, and internal appliance wiring.
ENGINEERING OVERVIEW: 10 AWG SIS UL 3173 600V
APPLICATION: Internal wiring of switchboards, control panels, and power distribution equipment.
VOLTAGE: Rated for 600 Volts.
CONDUCTORS: 104-strand soft drawn tinned coated copper per ASTM B33 and B174.
INSULATION: Cross-linked polyethylene (XLP), Type SIS.
TEMPERATURE: 125°C (257°F).
NOMINAL OD: 0.181 inches (4.60 mm).
Main Panel Power Infeeds: Providing the primary internal power source for mid-sized industrial control centers.
Industrial Battery Storage: Wiring connections for large UPS battery banks where heat management is critical.
Generator Control Circuits: Reliable power distribution for backup generator control logic and starter circuits.
Commercial Oven Wiring: Used for the internal power connections in industrial baking and heat-treating equipment.
Renewable Energy Inverters: Wiring the internal high-current DC side of commercial-grade solar or wind inverters.
Technical Note: All values are nominal and subject to industry tolerances and manufacturer corrections. Specifications are subject to change without notice. It is the buyer’s responsibility to verify that all materials meet the specific requirements of the project and comply with local electrical codes.
| Wire Size (AWG/MCM) | 10 AWG |
| Conductor Material | Tinned Copper |
| Conductor Type | Stranded |
| Strand Count | 104 |
| Outer Diameter (OD) (in/mm) | 0.181 in. / 4.60 mm |
| Conductor Count | 1 |
| Shield | Unshielded |
| Insulation Type | XLPE |
| UL Listing Numbers | UL 3173 |
| Voltage Rating | 600V |
| Submersible | No |
| Temperature Rating | 125ºC |
| Standards | UL Type AWM Style 3173 CSA CL1251 UL Horizontal Flame Test CSA FT2 Flame Test |
| Miscellaneous Information | All values are nominal and subject to correction. |
| Primary Applications | Switchboards, Control and Power Circuits, Applications up to 125° and 600 volts. |
| Common Uses |
|
| Weight per Foot | 0.043 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 : 10SIS-3173
SKU : 10SIS-3173-500-BK
Parent SKU : 10SIS-3173
SKU : 10SIS-3173-500-BK
The professional standard for high-density control panels—engineered with high-performance XLPE insulation and tinned copper for maximum reliability in environments up to 125°C."
The 10 AWG SIS wire is a high-output, high-temperature conductor designed for heavy-duty electrical systems, fully compliant with UL 3173 standards. It is the primary choice for main power feeds in industrial switchgear and high-current control panels. Our Cross-linked polyethylene (XLP) insulation is thermoset, ensuring that even under heavy electrical loads, the jacket maintains its physical integrity without melting or becoming brittle.
125°C Heat Resistance: Rated for continuous use in extreme thermal environments where standard building wire (90°C) fails.
Tinned Copper Conductor: Features a tin coating over the stranded copper to prevent corrosion and ensure effortless soldering and termination in high-humidity panels.
Chemically Cross-Linked (XLP): The insulation is chemically bonded to ensure it maintains structural integrity under extreme heat.
UL 3173 / CSA CL1251 Rated: Fully compliant with industrial standards for switchgear, control circuits, and internal appliance wiring.
ENGINEERING OVERVIEW: 10 AWG SIS UL 3173 600V
APPLICATION: Internal wiring of switchboards, control panels, and power distribution equipment.
VOLTAGE: Rated for 600 Volts.
CONDUCTORS: 104-strand soft drawn tinned coated copper per ASTM B33 and B174.
INSULATION: Cross-linked polyethylene (XLP), Type SIS.
TEMPERATURE: 125°C (257°F).
NOMINAL OD: 0.181 inches (4.60 mm).
Main Panel Power Infeeds: Providing the primary internal power source for mid-sized industrial control centers.
Industrial Battery Storage: Wiring connections for large UPS battery banks where heat management is critical.
Generator Control Circuits: Reliable power distribution for backup generator control logic and starter circuits.
Commercial Oven Wiring: Used for the internal power connections in industrial baking and heat-treating equipment.
Renewable Energy Inverters: Wiring the internal high-current DC side of commercial-grade solar or wind inverters.
Technical Note: All values are nominal and subject to industry tolerances and manufacturer corrections. Specifications are subject to change without notice. It is the buyer’s responsibility to verify that all materials meet the specific requirements of the project and comply with local electrical codes.
| Wire Size (AWG/MCM) | 10 AWG |
| Conductor Material | Tinned Copper |
| Conductor Type | Stranded |
| Strand Count | 104 |
| Outer Diameter (OD) (in/mm) | 0.181 in. / 4.60 mm |
| Conductor Count | 1 |
| Shield | Unshielded |
| Insulation Type | XLPE |
| UL Listing Numbers | UL 3173 |
| Voltage Rating | 600V |
| Submersible | No |
| Temperature Rating | 125ºC |
| Standards | UL Type AWM Style 3173 CSA CL1251 UL Horizontal Flame Test CSA FT2 Flame Test |
| Miscellaneous Information | All values are nominal and subject to correction. |
| Primary Applications | Switchboards, Control and Power Circuits, Applications up to 125° and 600 volts. |
| Common Uses |
|
| Weight per Foot | 0.043 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.
Get notified when this product is back in stock
Physical Specifications
Technical Specifications
Usage & Installation:
Packaging & Dimensions:
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SIS stands for Stranded Insulated Switchboard wire (or simply Switchboard Wire). It is a high-performance lead wire specifically engineered for wiring switchboards, control panels, distribution boards, and industrial control cabinets operating at temperatures up to 125°C (257°F) and voltages up to 600V. It features a highly flexible stranded bare copper conductor insulated with premium XLPE (Cross-linked Polyethylene), which provides superior resistance to heat, abrasion, chemicals, and flame propagation.
If you are looking for SIS high-temp wire near you, Wire America ships directly from regional hubs across the country. Most customers receive their order within 2 to 4 business days, and we offer expedited overnight shipping at checkout for emergency project deadlines.
SIS wire is the industry standard for high-performance internal wiring. Its primary applications include the internal circuitry of electrical switchgear, control panels, and distribution boards. Because of its 125°C temperature rating and resistance to oils and chemicals, it is also widely used for transformer leads, industrial motor starters, and relay logic systems in utility substations. It is the preferred choice for any environment where high-density wiring requires both flexibility and superior heat resistance.
SIS Switchboard wire is rated for 125°C (257°F). This makes it significantly more heat-resistant than standard THHN wire (90°C). It is specifically designed to maintain its electrical integrity in the "hot zones" inside electrical cabinets and industrial machinery.
Yes, our 10 AWG High Temp SIS wire is fully UL Style 3173 rated. UL 3173 is the official Underwriters Laboratories appliance wiring material (AWM) standard that certifies single-conductor, cross-linked polyethylene (XLPE) insulated wire for continuous use up to 125°C and 600 volts. This classification is highly sought after by electrical engineers and panel builders because it guarantees the wire complies with strict NEC (National Electrical Code) requirements for switchboard and utility control wiring.
Yes. Our 10 AWG SIS features a 104-strand conductor. This high strand count makes it significantly more flexible than standard building wire, allowing you to route high-amperage power through tight corners and around components within a crowded control cabinet.
The two main differences are heat and flexibility. SIS is rated for 125°C, while THHN is limited to 90°C. Additionally, SIS features Tinned Copper and XLP insulation, which is more flexible and "dead-soft" compared to the stiffer PVC/Nylon jacket of THHN, making SIS much easier to route in tight control clusters.
Yes. Our 10 AWG SIS wire is fully certified to UL Type AWM Style 3173, ensuring it meets rigorous safety and performance standards for switchboard and control circuit applications.
While the most common color is gray & black, we offer a wide variety of both colors and sizes from 10 AWG-18 AWG. Shop our full SIS High Temp Collection here.
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