12/4 150 FT SJOOW Wire 12 AWG 4 Conductor 300V - Heavy Duty Cable

In this review the focus is on a heavy duty 12 AWG 4 conductor, 150 ft SJOOW cable suited for demanding industrial and outdoor jobs. The bottom line: this cord is for electricians, contractors, and industrial users who need a flexible, oil- and water-resistant cable that holds up across a wide temperature range; its single biggest selling point is durable stranded oxygen free copper construction that improves conductivity and longevity under stress. The review examines build, handling, and realistic applications rather than marketing claims.

Key Features

• Temperature range: Rated to perform from -40C to 90C so it remains flexible and reliable in both freezing and hot environments.
• Stranded OFC conductors: The stranded pure oxygen free copper conductors provide better conductivity and fatigue resistance for repeated flexing and long runs.
• 300V SJOOW jacket: Service, oil, and water resistant jacket helps protect the cable in harsh industrial, marine, and outdoor settings.
• Conductor construction: Each conductor uses 67 strands with a 2.36 mm diameter resulting in a balance of flexibility and current carrying capability for portable tools and lighting.
• Length and size: The 150 ft length with 12 AWG four-conductor layout is convenient for long runs without frequent splicing or expensive extension setups.
• Easy to install: The cable is simple to cut and terminate, making it straightforward to use on site for power and control circuits.

Who It's For

This cable is best for electricians, maintenance teams, and contractors working in power generation, mining, oil and gas, or marine environments who need a flexible, durable 12 AWG 4 conductor cable for portable equipment, lighting, or control circuits. The SJOOW jacket and stranded oxygen free copper conductors make it a strong choice where abrasion, oil exposure, or temperature swings are expected.

Those who should look elsewhere include users who require a separate dedicated grounding conductor in the same jacket (this is not a 4+1 cable) or anyone needing higher voltage ratings than 300V. For residential indoor wiring where color-coded insulated grounding is required, a different cable type would be more appropriate.

Pros & Cons

Pros

• Durable SJOOW jacket that resists oil, water, and service environment wear.
• Stranded oxygen free copper conductors improve conductivity and flexibility for portable and repeated-use applications.
• Long 150 ft length reduces the need for splices on larger job sites.

Cons

• Does not include an additional ground conductor in the jacket, so it is not suitable where a 4+1 grounded cable is required.

Specifications

Conductor gauge	12 AWG
Number of conductors	4 conductors
Length	150 ft
Voltage rating	300V
Conductor material	Stranded oxygen free copper (OFC)
Strands per conductor	67 strands
Temperature rating	-40C to 90C

Our Verdict

The 12/4 150 ft SJOOW cable is a practical and cost-effective choice for industrial and outdoor electrical work where flexibility, oil and water resistance, and durable copper conductors matter. Professionals who need a reliable 12 AWG four-wire run will find good value here, provided they do not require an integrated ground conductor in the same jacket.

Frequently Asked Questions

Does this cable include a separate ground wire?
No, this 12 AWG 4 conductor cable does not include an additional ground conductor and is not a 4+1 cable.

Is the jacket suitable for outdoor and marine use?
Yes, the SJOOW jacket is service, oil, and water resistant and is intended for harsh outdoor and marine-adjacent environments.

Can it be used for portable tools and lighting?
Yes, the stranded OFC conductors and flexible jacket make it suitable for portable tools, lighting fixtures, and temporary power runs.