3/0 Gauge AWG 200 Ft Red Flexible Pure Copper Welding Cable - Heavy

Our review finds the TEMCo 3/0 gauge 200 ft red welding cable is a practical, heavy duty wire for anyone who needs a long, flexible, corrosion-resistant conductor for power and battery work. In this review the biggest reason to buy is its combination of pure annealed oxygen-free copper and a rugged EPDM jacket, which together deliver high conductivity and exceptional flexibility for routing in tight engine bays, RVs, or solar arrays. It is a workhorse cable for DIY installers and professionals who value durability and ease of handling.

Key Features

• 380 Max Amps: Capable of carrying high current up to 380 amps for runs up to 50 ft, making it suitable for heavy battery and welding use.
• Pure OFC Conductor: Annealed 30 gauge oxygen-free copper improves conductivity and reduces heat buildup in demanding installations.
• Flexible EPDM Jacket: The TEMCo Easy-Flex rubber jacket keeps the cable pliable at low temperatures and easy to route in cramped spaces.
• Wide Temperature Range: Rated from -58F to +221F, it holds up in extreme cold or hot engine bays and outdoor solar installations.
• Durability: The jacket resists cuts, tears, abrasion, water, oil, grease and flame, extending service life in rough environments.
• Versatile Use: Can be used for welding leads, battery and starter cables, car audio, solar arrays, RV DC systems and battery banks.

Who It's For

This cable is aimed at DIY mechanics, mobile technicians, solar installers and vehicle upfitters who need a long, flexible high-current conductor. Its pure copper construction and high strand count make it a good pick for battery banks, winch leads, and inverter or starter cable runs where conductivity and heat resistance matter.

Those looking for ultra-lightweight or very thin profile wiring for low-current electronics should look elsewhere; this is a heavy 3/0 gauge cable designed for power delivery rather than signal or delicate audio runs where smaller gauge or shielded cable is preferred.

Pros & Cons

Pros

• Excellent flexibility from the EPDM Easy-Flex jacket, which eases routing and installation in tight spaces.
• High-quality annealed OFC conductor and dense stranding provide strong conductivity and durability under load.
• Wide temperature and chemical resistance make it suitable for harsh engine bays and outdoor solar installations.

Cons

• As a heavy 3/0 gauge cable, it is relatively thick and may be stiff compared with smaller gauges when coiling long lengths.
• 200 ft of cable is bulky and requires planning for storage and handling on site.

Specifications

Gauge	3/0 AWG
Length	200 ft
Max Current	380 amps (up to 50 ft)
Voltage Rating	Up to 600 volts
Conductor	Annealed 30 gauge OFC, stranding 1547/30
Nominal OD	0.621 in (15.77 mm)
Temperature Range	-58F to +221F (-50C to +105C)

Our Verdict

The TEMCo 3/0 gauge 200 ft welding cable is a solid value for installers who need a long, flexible, and durable power cable. Its oxygen-free copper conductor and rugged EPDM jacket make it especially well suited for battery banks, welding leads, RV and solar DC systems, and under-hood power runs where heat and abrasion resistance matter. For heavy current work it offers dependable performance without unnecessary frills.

Frequently Asked Questions

Can this cable be used for battery banks and inverter hookups?
Yes, the cable is rated for heavy current and is suitable for battery banks and inverter DC connections thanks to its pure copper conductor and 380 amp capability at short runs.

Is the jacket resistant to oil and engine heat?
Yes, the EPDM jacket is specified as resistant to oil, grease and high temperatures, and is rated to +221F for under-hood applications.

How flexible is the cable for routing in tight spaces?
The TEMCo Easy-Flex construction is notably flexible due to dense fine stranding and the rubber jacket, making routing around bends and through conduits easier than standard heavy cables.