4 Gauge AWG 225 Ft Red Pure Copper Welding Cable - Flexible Heavy Duty

In this review the TEMCo 4 gauge 225 ft red welding cable is evaluated for installers and DIYers who need long, flexible, heavy duty DC cable for welding, battery banks, solar and vehicle use. The single biggest reason to buy is the cable's combination of pure annealed oxygen free copper conductor and a rugged EPDM jacket that stays flexible in cold and resists oil and abrasion, which makes it easy to route in cramped engine bays or behind battery racks while carrying substantial current for short runs.

Key Features

• Pure copper conductor: Annealed 30 gauge OFC strands give the cable high conductivity and reliable contact for battery and welding applications.
• Extra flexibility: TEMCo Easy-Flex construction and 364/30 stranding make the cable easy to bend and route without kinking, ideal for tight spaces.
• Wide temperature range: Rated from -58F to +221F so it remains usable in cold climates and under engine bay heat.
• Durable EPDM jacket: The rugged outer jacket resists cuts, tears, abrasion, water, oil and grease for long service life in mobile and outdoor installs.
• High voltage rating: Rated up to 600 volts, allowing safe use in many DC systems including solar arrays and inverter connections.
• Long spool length: 225 ft provides enough cable for multi-run battery banks, RV systems or long welding leads without multiple joins.

Who It's For

The TEMCo 4 gauge cable is best for hobbyist welders, car audio and RV enthusiasts, solar installers and anyone building or extending battery banks who needs a flexible, durable conductor. Its flexibility and pure copper make it especially useful for engine bay work, winch leads and inverter/battery runs where routing and heat resistance matter.

Those who need sustained extremely high continuous welding current over long distances should consider larger gauge options; likewise, if you need tinned cable for marine corrosion resistance, a tinned alternative is preferable.

Pros & Cons

Pros

• Excellent flexibility and ease of routing thanks to the fine 364/30 stranding and EPDM jacket.
• High conductivity from annealed oxygen free copper strands improves performance as battery and welding cable.
• Durable jacket resists oil, grease, abrasion and flame for demanding environments.
• Long 225 ft length reduces the need for splices on larger installations.

Cons

• Rated at 150 max amps only for runs up to about 50 ft, so longer high-current runs will require thicker cable.
• Not tinned, so users in highly corrosive marine environments may prefer a tinned copper alternative.

Specifications

Gauge	4 AWG
Length	225 ft
Conductor	Annealed OFC, 364/30 strands
Nominal OD	0.331 in (8.41 mm)
Voltage rating	Up to 600 volts
Temperature range	-58F to +221F (-50C to +105C)
Max amps	150 amps (up to ~50 ft)

Our Verdict

The TEMCo 4 gauge 225 ft red cable is a solid value for anyone who needs a long, flexible pure copper conductor for welding leads, battery banks, solar or vehicle DC systems. Its durable EPDM jacket and fine copper stranding deliver flexibility and reliability, making it a cost-effective choice for most mobile and home installations, provided runs are kept within the cable's current limits.

Frequently Asked Questions

Can this cable be used for battery and starter cables?
Yes, the pure annealed OFC conductor and rugged jacket make it suitable for battery and starter cable use in cars, trucks and diesel engines.

Is the jacket resistant to oil and heat?
Yes, the EPDM jacket is rated to resist oil, grease, abrasion and temperatures up to +221F, suitable for engine bay conditions.

How much current can it carry?
It is rated for about 150 max amps for runs up to roughly 50 ft; longer high-current runs require heavier gauge cable.