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12/4 SJOOW, 12 AWG 4 Conductor

Quick Overview

12/4 SJOOW 300 Volt is the 12 gauge, 4 conductor 300V version of a heavy duty electrical cord.

Order online by the foot!

Availability: In stock

$0.83 per Foot


SJOOW electrical cable is a type of portable cable that offers a number of major benefits that makes it a great choice for a variety of industrial, commercial and residential applications, both indoors and outdoors. Many of the cable's perks are noted in its name:


S = Service

J = Junior

OO = Insulation that is oil-resistant

W = Moisture and weather resist

They don't come more flexible or rugged than SJOOW portable electrical cables. That's because the cable is made from extremely durable materials -- an EPDM rubber insulation protects the delicate copper conductors inside, and the entire cable is protected by a CPE thermoset jacket. All this strength makes the SJOOW portable electrical cable reliable and long-lasting for both indoor and outdoor use.


With the SJOOW 12/4 cable, the 12 awg size wire includes four copper conductors. These conductor wires are braided together and initially protected by a layer of wax-paper fillers. Then comes the insulation -- that is oil resistant -- and thermoset jacket, which is impervious to water, heat, chemicals, oil, tears and scrapes. This allows the cable to operate well in very extreme temperatures -- both low and high -- as well as some very grimy environments, like oil refineries, mines, and marinas.


SJOOW electrical cables are rated to be in applications up to 300 volts. It's durability and ruggedness makes SJOOW cables a great option for a wide range of projects, including mining and oil refining, portable equipment and tools, industrial equipment, portable lighting systems, and dockside and marina power (for water resistance and strong jacket). Other applications include portable music and concert equipment, portable appliances, small motors, mills, and any other indoor/outdoor area that needs up to 300 volts.

Other specifications include:

  • Made in USA
  • NEC rated for hard usage - Article 400
  • UL 62
  • CSA Standard 22.2 No 49
  • MSHA fire resistance for Mining Applications (P-136-MSHA)
  • Federal Specification J-C 580B
  • OSHA Acceptable
  • RoHS Compliant

Additional Information

Certifications CSA, MSHA, OSHA, RoHS, UL
Conductor Material Stranded Class K Copper
Conductor Stranding [#/AWG] 65 x 30
Area Use Indoor & Outdoor Rated
Nominal Insulation Thickness [in] .03
Jacket Color Black
Jacket Material Type CPE (Chlorinated Polyethylene Elastomer) Rubber Jacket
Nominal Jacket Thickness [in] .045
Jacket Type SJOOW
Manufacturer Equivalent Part Numbers Coleman Cable 823428-04-08 250 12/4 Sjoow Cable Coleman Cable 823428-06-08 1K 12/4 Sjoow Cable Coleman Cable 823428-64-08 12/4 Sjoow Cable Coleman Cable 8234280408 12/4 SJOOW Royal 250' Rohs
Max. Amps 20
Max. Voltage 300
Number of Conductors 4
Outside Diameter .475"
Solid / Stranded Stranded
Temperature Range -40F to 194F | -40C to 90C
Wire Colors Included One White | One Black | One Green | One Red
Wire Size 12 AWG
Weight Per 1000 Feet [lbs] 180

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