50ft 12/4 12 AWG Portable Power Cable SJOOW - Heavy Duty 300V

In this review of the 50ft 12/4 12 AWG Portable Power Cable SJOOW, the reviewer finds it a dependable choice for industrial and outdoor power runs where durability matters most. It is best suited to contractors, event electricians, marine technicians, and DIYers who need a flexible, oil- and water-resistant cable that stands up to rough conditions. The single biggest reason to buy is the combination of stranded OFC conductors and a rugged PVC jacket that maintain conductivity and resist chemicals and moisture in demanding environments.

Key Features

• Rugged SJOOW Jacket: The PVC jacket resists oil, water, acids and chemicals so the cable stays serviceable in harsh outdoor or industrial locations.
• OFC Stranded Conductors: Oxygen Free Copper with multiple thin strands improves conductivity and corrosion resistance for reliable power delivery.
• Four Conductors: The 12/4 configuration provides separate lines for power and control or multiple circuits in one cable for tidy installations.
• Wide Operating Range: Rated for -40C to 90C so it can be used in cold storage, outdoor events, and warmer industrial settings without degrading quickly.
• 50 ft Length: A full 50 ft run covers common temporary power and equipment needs on jobsites, shows, and boats without additional joins.
• Compact Diameter: The 10.2 mm overall diameter keeps the cable flexible for routing while protecting the conductors with a 1 mm jacket and 0.45 mm insulation per core.

Who It's For

The cable suits tradespeople, rental companies, event electricians, and marine users who need a flexible, four-conductor power cable built for rough conditions and temporary power distribution. It works well for motor leads, portable lighting, battery chargers, pumps, and other heavy-duty portable equipment.

Those who need a separate grounding conductor or a 4+1 cable should look elsewhere, since this is a true 4-conductor cord without an extra ground wire. For low-voltage signal-only runs or extremely heavy continuous motor loads, a different specification may be more appropriate.

Pros & Cons

Pros

• Durable SJOOW jacket that holds up to oil, water and chemicals in harsh environments.
• Stranded OFC conductors for improved conductivity, corrosion resistance, and heat handling.
• Flexible 50 ft length and compact diameter that make routing and temporary setups easier.
• Versatile 12/4 configuration useful for power, control and multiple circuits.

Cons

• No separate grounding conductor included; not a 4+1 type cable.
• Some users may find the individual conductor thickness thin for certain heavy continuous loads.

Specifications

Cable length	50 ft
Conductor count	4 conductors
Wire gauge	12 AWG (12/4)
Conductor material	OFC stranded pure copper (72 strands per conductor)
Insulation / Jacket	PVC insulation ~0.45 mm / PVC jacket ~1 mm (SJOOW)
Voltage rating	300V
Temperature range	-40C to 90C

Our Verdict

The 50ft 12/4 12 AWG SJOOW cable is a practical, value-focused choice for anyone needing a resilient portable power cord for industrial, marine, or event use. Its stranded OFC conductors and chemical-resistant jacket deliver dependable conductivity and durability, though buyers should confirm they do not require an extra grounding conductor. For temporary power distribution and rugged outdoor work, it offers good performance and clear utility.

Frequently Asked Questions

Does this cable include a separate ground wire?
No. This is a 4-conductor cable only and does not include an extra grounding conductor or 4+1 configuration.

Is the cable suitable for marine or outdoor wet locations?
Yes. The SJOOW PVC jacket is designed to resist water, oil and chemicals, and the cable is rated for outdoor and marine use within the stated temperature range.

What makes the conductors better than ordinary copper?
The conductors are oxygen free copper (OFC) and stranded into multiple thin wires, which improves conductivity, heat absorption and corrosion resistance versus some non-OFC solid conductors.