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 : BCTSTR1
SKU : BCTSTR1-250
Engineered for high conductivity, flexibility, and maximum corrosion resistance, 1 AWG 7-Stranded Tinned Bare Copper Wire is the professional choice for heavy-duty electrical grounding, marine power networks, and utility distribution.
This uninsulated soft-drawn copper features a hot-dipped or electroplated tin coating that blocks rust, moisture, and salt-air oxidation. Its 7-strand concentric layout provides superior flexibility for easier bending and pulling compared to stiff solid conductors.
Tin-Coated Corrosion Defense: Soft-drawn copper hot-dipped or electroplated with tin to stop oxidation, tarnish, and moisture-induced corrosion in harsh environments.
7-Stranded Flexibility: Concentric-lay 7-strand construction makes it easy to bend, route, and terminate compared to stiff solid conductors.
High-Conductivity Grounding: Delivers 265 Amps allowable ampacity (at 75°C conductor temp / 25°C ambient) with an ultra-low DC resistance of 0.12520 Ohms per 1,000 ft at 20°C.
Soft-Drawn Annealed Copper: Flexible, easy to work with, and less prone to work-hardening or cracking during installation.
ASTM & Federal Compliant: Fully meets ASTM B-3, ASTM B-8, ASTM B-33, ASTM B-258, and Federal Spec QQ-W-343 standards.
Wire Size: 1 AWG
Number of Strands: 7 Strands
Conductor Material: Soft Drawn / Annealed Copper
Surface Coating: Hot-Dipped or Electroplated Tin
Overall Diameter: 0.328 inches
Net Weight: 258.4 lbs / 1,000 ft
DC Resistance @ 20°C: 0.12520 Ohms / 1,000 ft
Rated Breaking Strength: 2,552 lbs
Allowable Ampacity: 265 Amps (Based on 75°C conductor temp, 25°C ambient, 2 ft/sec wind in sun)
Compliance Standards: ASTM B-3, ASTM B-8, ASTM B-33, ASTM B-258, Federal Spec QQ-W-343
Overhead Transmission & Distribution: Used for equipment grounding and bonding overhead utility lines.
Marine & Outdoor Grounding: Superior defense against saltwater spray, high humidity, and harsh soil chemicals.
Industrial & Commercial Grounding: Provides a heavy-duty, low-resistance path to ground for main service panels, transformers, machinery, and electrical enclosures.
Substation & Utility Bonding: Delivers high ampacity and robust tensile strength for critical grounding grid networks.Â
All values are nominal and subject to correction. *Ampacity based on 75°C conductor temperature; 25°C ambient temperature; 2ft./sec. wind in sun.
| Wire Size (AWG/MCM) | 1 AWG |
| Conductor Material | Tinned Copper |
| Conductor Type | Stranded |
| Strand Count | 7 |
| Outer Diameter (OD) (in/mm) | 0.328 in. |
| Conductor Count | 1 |
| Shield | Unshielded |
| Ampacity Rating | 265 |
| Direct Burial Rating | Yes |
| Submersible | No |
| Sunlight Resistance Rating | Yes |
| Standards | ASTM B-1 Hard-drawn copper wire ASTM B-2 Medium-hard drawn copper wire ASTM B-3 Soft or annealed copper wire ASTM B-8 Concentric-lay stranded copper conductors: hard, medium-hard, or soft ASTM B-33 Tinned soft or annealed copper wire ASTM B-258 Federal Sepc QQ-W-364 |
| Miscellaneous Information | All values are nominal and subject to correction. *Ampacity based on 75ºC conductor temperature; 25ºC ambient temperature; 2ft./sec. wind in sun. |
| Primary Applications | Grounding Systems, Overhead Power Distribution, Ground Wire for Lightning Protection, Bonding Applications, Messenger and Support Wires |
| Common Uses |
|
| Weight per Foot | 0.2584 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 : BCTSTR1
SKU : BCTSTR1-250
Parent SKU : BCTSTR1
SKU : BCTSTR1-250
Engineered for high conductivity, flexibility, and maximum corrosion resistance, 1 AWG 7-Stranded Tinned Bare Copper Wire is the professional choice for heavy-duty electrical grounding, marine power networks, and utility distribution.
This uninsulated soft-drawn copper features a hot-dipped or electroplated tin coating that blocks rust, moisture, and salt-air oxidation. Its 7-strand concentric layout provides superior flexibility for easier bending and pulling compared to stiff solid conductors.
Tin-Coated Corrosion Defense: Soft-drawn copper hot-dipped or electroplated with tin to stop oxidation, tarnish, and moisture-induced corrosion in harsh environments.
7-Stranded Flexibility: Concentric-lay 7-strand construction makes it easy to bend, route, and terminate compared to stiff solid conductors.
High-Conductivity Grounding: Delivers 265 Amps allowable ampacity (at 75°C conductor temp / 25°C ambient) with an ultra-low DC resistance of 0.12520 Ohms per 1,000 ft at 20°C.
Soft-Drawn Annealed Copper: Flexible, easy to work with, and less prone to work-hardening or cracking during installation.
ASTM & Federal Compliant: Fully meets ASTM B-3, ASTM B-8, ASTM B-33, ASTM B-258, and Federal Spec QQ-W-343 standards.
Wire Size: 1 AWG
Number of Strands: 7 Strands
Conductor Material: Soft Drawn / Annealed Copper
Surface Coating: Hot-Dipped or Electroplated Tin
Overall Diameter: 0.328 inches
Net Weight: 258.4 lbs / 1,000 ft
DC Resistance @ 20°C: 0.12520 Ohms / 1,000 ft
Rated Breaking Strength: 2,552 lbs
Allowable Ampacity: 265 Amps (Based on 75°C conductor temp, 25°C ambient, 2 ft/sec wind in sun)
Compliance Standards: ASTM B-3, ASTM B-8, ASTM B-33, ASTM B-258, Federal Spec QQ-W-343
Overhead Transmission & Distribution: Used for equipment grounding and bonding overhead utility lines.
Marine & Outdoor Grounding: Superior defense against saltwater spray, high humidity, and harsh soil chemicals.
Industrial & Commercial Grounding: Provides a heavy-duty, low-resistance path to ground for main service panels, transformers, machinery, and electrical enclosures.
Substation & Utility Bonding: Delivers high ampacity and robust tensile strength for critical grounding grid networks.Â
All values are nominal and subject to correction. *Ampacity based on 75°C conductor temperature; 25°C ambient temperature; 2ft./sec. wind in sun.
| Wire Size (AWG/MCM) | 1 AWG |
| Conductor Material | Tinned Copper |
| Conductor Type | Stranded |
| Strand Count | 7 |
| Outer Diameter (OD) (in/mm) | 0.328 in. |
| Conductor Count | 1 |
| Shield | Unshielded |
| Ampacity Rating | 265 |
| Direct Burial Rating | Yes |
| Submersible | No |
| Sunlight Resistance Rating | Yes |
| Standards | ASTM B-1 Hard-drawn copper wire ASTM B-2 Medium-hard drawn copper wire ASTM B-3 Soft or annealed copper wire ASTM B-8 Concentric-lay stranded copper conductors: hard, medium-hard, or soft ASTM B-33 Tinned soft or annealed copper wire ASTM B-258 Federal Sepc QQ-W-364 |
| Miscellaneous Information | All values are nominal and subject to correction. *Ampacity based on 75ºC conductor temperature; 25ºC ambient temperature; 2ft./sec. wind in sun. |
| Primary Applications | Grounding Systems, Overhead Power Distribution, Ground Wire for Lightning Protection, Bonding Applications, Messenger and Support Wires |
| Common Uses |
|
| Weight per Foot | 0.2584 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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This heavy-duty tinned copper wire is widely used across several demanding industries and electrical applications:
The difference comes down to flexibility and tensile strength, determined by a heat-treatment process called annealing:
Tinning places a protective metal coating over the bare copper strands. In moist, humid, or marine environments, untreated bare copper oxidizes and forms a green crust (copper oxide), which increases resistance and degrades connections over time. The tin layer prevents oxidation, ensuring long-term conductivity and significantly extending wire life.
While both conduct electricity efficiently, 7-stranded 1 AWG wire is considerably more flexible. It bends easily around corners, withstands engine/machinery vibration without metal fatigue, and is much simpler to pull through conduit or tie into grounding buses.
Is this 1 AWG tinned copper wire insulated?
No, this is an uninsulated bare conductor. It is designed specifically for grounding, bonding, and direct electrical connection paths where insulating jackets are not required or intended.
This wire weighs approximately 258.4 lbs per 1,000 feet and features a rated breaking strength of 2,552 lbs, making it exceptional for heavy overhead runs, commercial ground grids, and structural grounding where high mechanical tension is present.
Yes! One of the major added benefits of tinned copper is solderability. Because tin is the primary component of solder, the pre-tinned surface allows solder to flow and adhere almost instantly without having to scrape away copper oxidation.
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