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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 : TGGT-12
SKU : TGGT-12-250
"The industry standard for extreme heat environments—engineered with high-performance PTFE and glass shielding for maximum reliability in temperatures up to 250°C."
The 12 AWG TGGT wire is a specialized high-temperature conductor designed for environments where standard silicone or XLPE insulation would melt or fail. It is the primary choice for internal wiring in commercial ovens, industrial heaters, and aerospace equipment. By combining PTFE (Teflon) tapes with a double layer of glass braiding, TGGT offers a unique combination of chemical resistance and extreme thermal stability.
250°C Thermal Performance: Engineered to operate continuously in environments reaching 482°F, making it the industry standard for commercial cooking and heating equipment.
Nickel-Coated Copper Conductor: Features 2% nickel plating per ASTM B355 to prevent oxidation and maintain electrical integrity at temperatures where standard tin-plated copper would degrade.
Triple-Layer Shielding: Features PTFE tape insulation covered by a glass yarn braid and an overall fiberglass jacket, offering a rugged defense against both extreme heat and mechanical wear.
Superior Chemical Resistance: The PTFE component provides an excellent barrier against oils, solvents, and industrial chemicals, preventing insulation breakdown in harsh manufacturing zones.
ENGINEERING OVERVIEW: 12 AWG TGGT 600V
APPLICATION: Commercial ovens, industrial heaters, kilns, and high-temperature appliance leads.
VOLTAGE: 600 Volts.
UL LISTING: UL 5256.
CONDUCTORS: Flexible (65 Strands) soft drawn 2% nickel-coated copper (per ASTM B355).
INSULATION: PTFE (Teflon) tape with a fiberglass moisture barrier.
JACKET: Braided fiberglass with a high-temperature finish.
TEMPERATURE: 250°C (482°F).
NOMINAL OD: 0.127 inches (3.22 mm).
Industrial Kiln Feeders: Providing main power leads for large-scale ceramic and glass kilns.
Commercial Pizza Ovens: Internal wiring for high-output conveyor and deck ovens used in high-volume foodservice.
Plastic Extrusion Equipment: Connecting power to high-wattage heater bands and barrels.
Commercial Dishwasher Boosters: Reliable power for high-temperature water heating elements.
Laboratory Testing Chambers: Internal wiring for scientific equipment used in high-heat stress testing.
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) | 12 AWG |
| Conductor Material | Nickel Coated Copper |
| Conductor Type | Stranded |
| Strand Count | 65 |
| Outer Diameter (OD) (in/mm) | 0.127 in. / 3.22 mm |
| Jacket Type | Fiberglass Braid |
| Conductor Count | 1 |
| Shield | Unshielded |
| Insulation Type | Polytetrafluoroethylene (PTFE) |
| UL Listing Numbers | UL 5256, UL 5251 |
| Voltage Rating | 600V |
| Submersible | No |
| Flexibility Rating | Very Good |
| Temperature Rating | 250ºC |
| Standards | UL 5256 (18-2 AWG) UL 5251 (1/0 AWG and larger) CSA AWM 1 A/B FT1 VW-1 Flame Test |
| Miscellaneous Information | The data shown are approximate and subject to standard industry and manufacturer tolerances |
| Primary Applications | Heating Equipment, Cooking Equipment, Industrial Cooking, Equipment wiring in Iron and Steel Mills, Cement Kilns, and Glass Plants |
| Common Uses |
|
| Weight per Foot | 0.032 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 : TGGT-12
SKU : TGGT-12-250
Parent SKU : TGGT-12
SKU : TGGT-12-250
"The industry standard for extreme heat environments—engineered with high-performance PTFE and glass shielding for maximum reliability in temperatures up to 250°C."
The 12 AWG TGGT wire is a specialized high-temperature conductor designed for environments where standard silicone or XLPE insulation would melt or fail. It is the primary choice for internal wiring in commercial ovens, industrial heaters, and aerospace equipment. By combining PTFE (Teflon) tapes with a double layer of glass braiding, TGGT offers a unique combination of chemical resistance and extreme thermal stability.
250°C Thermal Performance: Engineered to operate continuously in environments reaching 482°F, making it the industry standard for commercial cooking and heating equipment.
Nickel-Coated Copper Conductor: Features 2% nickel plating per ASTM B355 to prevent oxidation and maintain electrical integrity at temperatures where standard tin-plated copper would degrade.
Triple-Layer Shielding: Features PTFE tape insulation covered by a glass yarn braid and an overall fiberglass jacket, offering a rugged defense against both extreme heat and mechanical wear.
Superior Chemical Resistance: The PTFE component provides an excellent barrier against oils, solvents, and industrial chemicals, preventing insulation breakdown in harsh manufacturing zones.
ENGINEERING OVERVIEW: 12 AWG TGGT 600V
APPLICATION: Commercial ovens, industrial heaters, kilns, and high-temperature appliance leads.
VOLTAGE: 600 Volts.
UL LISTING: UL 5256.
CONDUCTORS: Flexible (65 Strands) soft drawn 2% nickel-coated copper (per ASTM B355).
INSULATION: PTFE (Teflon) tape with a fiberglass moisture barrier.
JACKET: Braided fiberglass with a high-temperature finish.
TEMPERATURE: 250°C (482°F).
NOMINAL OD: 0.127 inches (3.22 mm).
Industrial Kiln Feeders: Providing main power leads for large-scale ceramic and glass kilns.
Commercial Pizza Ovens: Internal wiring for high-output conveyor and deck ovens used in high-volume foodservice.
Plastic Extrusion Equipment: Connecting power to high-wattage heater bands and barrels.
Commercial Dishwasher Boosters: Reliable power for high-temperature water heating elements.
Laboratory Testing Chambers: Internal wiring for scientific equipment used in high-heat stress testing.
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) | 12 AWG |
| Conductor Material | Nickel Coated Copper |
| Conductor Type | Stranded |
| Strand Count | 65 |
| Outer Diameter (OD) (in/mm) | 0.127 in. / 3.22 mm |
| Jacket Type | Fiberglass Braid |
| Conductor Count | 1 |
| Shield | Unshielded |
| Insulation Type | Polytetrafluoroethylene (PTFE) |
| UL Listing Numbers | UL 5256, UL 5251 |
| Voltage Rating | 600V |
| Submersible | No |
| Flexibility Rating | Very Good |
| Temperature Rating | 250ºC |
| Standards | UL 5256 (18-2 AWG) UL 5251 (1/0 AWG and larger) CSA AWM 1 A/B FT1 VW-1 Flame Test |
| Miscellaneous Information | The data shown are approximate and subject to standard industry and manufacturer tolerances |
| Primary Applications | Heating Equipment, Cooking Equipment, Industrial Cooking, Equipment wiring in Iron and Steel Mills, Cement Kilns, and Glass Plants |
| Common Uses |
|
| Weight per Foot | 0.032 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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TGGT stands for Teflon-Glass-Glass-Teflon. The name describes its multi-layer construction: PTFE (Teflon) tape insulation, followed by a glass yarn braid, and a final fiberglass jacket impregnated with a high-temp Teflon finish.
The primary difference is the temperature rating and insulation material. TGGT is rated for 250°C (482°F) and uses PTFE (Teflon) tape. MG (Mica Glass) wire is rated for 450°C (842°F). MG wire replaces the Teflon tape with Mica tapes, a mineral-based insulator that can withstand nearly double the heat of TGGT. While TGGT is the standard for commercial ovens and appliances, MG wire is required for "extreme zones" like industrial heaters, commercial kilns, and equipment operating near open flames or molten metal.
Yes. 12 AWG TGGT is rated for 600 Volts, making it ideal for standard 120V, 208V, or 240V industrial heating circuits. It is commonly used as the main lead wire for high-wattage heating elements.
Yes. While fiberglass by itself can absorb moisture, the jacket on our TGGT wire is impregnated with a high-temperature finish that provides excellent resistance to moisture, oils, and flames.
12 AWG TGGT is designed with flexible stranding (typically 65 strands), making it much easier to route than standard building wire. However, because of its multiple layers of glass and Teflon tape, it is slightly stiffer than silicone-based SRML.
12 AWG TGGT is designed with flexible stranding (typically 65 strands), making it much easier to route than standard building wire. However, because of its multiple layers of glass and Teflon tape, it is slightly stiffer than silicone-based SRML.
At 250°C, standard copper or tinned copper will oxidize rapidly, leading to brittle wires and failed connections. The2% Nickel coating (ASTM B355 )acts as a protective shield, allowing the copper core to remain flexible and conductive even after years of exposure to extreme heat.
Because TGGT is rated for 250°C, it has a much higher ampacity (current carrying capacity) than standard 90°C wire. However, always consult the NEC (National Electrical Code) for your specific equipment and ambient temperature to ensure the circuit is safely fused.
Yes. We carry a comprehensive range of high-temperature wire, including SIS, SRML, TGGT, & MG designed for everything from industrial motor leads to commercial oven circuitry. Each product page includes detailed engineering specs, such as strand counts, insulation materials, and UL listings. To view our complete inventory, sort by gauge, or download full spec sheets for every size we carry, please visit our Full High-Temperature Wire Collection here.
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