18/3 SJOOW Wire 150FT 18 AWG 300V SJOOW Cable - Heavy-Duty Flexible

In this review the 18/3 SJOOW Wire 150FT is evaluated for tradespeople and technicians who need a rugged, portable power cable. The bottom line: this 18 AWG, 3-conductor SJOOW cord stands out for its durable oil- and water-resistant PVC jacket and oxygen-free copper conductors, making it a practical choice where flexibility and chemical resistance matter. For anyone running portable lights, generators, motors, or temporary power at outdoor sites, the cable delivers dependable conductivity and weather-tolerant performance.

Key Features

• Built for extreme conditions: The oil, water, and acid-resistant PVC jacket and insulation resist harsh chemicals and weather from -40C to 90C for reliable outdoor use.
• Superior OFC conductors: Three conductors of oxygen-free copper with 41 fine strands each provide improved conductivity and heat dissipation compared with non-OFC wire.
• Flexible stranded construction: The finely stranded 41-wire conductors and flexible jacket make the cord easier to route on sites and around equipment than solid-core alternatives.
• Versatile industrial use: Rated 300V and built as SJOOW type, it suits portable tools, lighting, generators, motors, and many marine and industrial power/control applications.
• Clear sizing: The spool provides 150 ft of 18/3 cable with a 5.5 mm overall diameter, which is handy for medium-length runs without frequent splicing.

Who It's For

The cable is aimed at electricians, construction crews, rental companies, and event technicians who need a durable, flexible power cord for portable equipment and temporary power distribution. Its chemical resistance and temperature range make it suitable for outdoor and industrial environments where exposure is likely.

Those who need a dedicated grounding conductor should look elsewhere or use this cable in applications that accept a 3-conductor cord without a separate ground. It is not a 3+1 type, so installations requiring an independent grounding conductor must use a different cable type.

Pros & Cons

Pros

• Robust PVC jacket and insulation give reliable resistance to oil, water, and acids for tough environments.
• Oxygen-free copper and fine strand count deliver good conductivity and reduced corrosion risk for sustained loads.
• Flexible construction and 150 ft length reduce the need for extensions on typical job sites and events.
• 300V rating and SJOOW designation suit a wide range of portable power and marine uses.

Cons

• Contains only three current-carrying conductors and no separate ground, so it is not suitable where a dedicated ground wire is required.
• At 18 AWG, it is best for medium-current portable applications and not for heavy continuous high-current industrial mains without checking ampacity limits.

Specifications

Type	18/3 SJOOW
Length	150 ft
Conductor	Oxygen-free copper, 41 strands per conductor
Gauge	18 AWG (three conductors)
Voltage Rating	300V
Jacket	PVC, oil/water/acid resistant, 0.65 mm overall jacket
Temperature Range	-40C to 90C

Our Verdict

The 18/3 SJOOW 150 ft cable is a solid value for professionals who need a flexible, chemically resistant, and weather-tolerant portable power cord. It excels where robust jacket protection and oxygen-free copper conductors matter, but buyers must confirm that a three-conductor cord without a separate ground meets their installation requirements.

Frequently Asked Questions

Does this cable include a separate ground conductor?
No, this is a 3-conductor SJOOW cable with three current-carrying conductors only and does not include a separate grounding wire.

Is this cable suitable for outdoor and marine use?
Yes, the oil-, water-, and acid-resistant PVC jacket and -40C to 90C rating make it appropriate for many outdoor and marine portable applications.

What equipment is this best used with?
It works well for portable lights, generators, motors, power tools, temporary event power, and many control or distribution uses where 18 AWG capacity is acceptable.