100ft 12/3 12 AWG SJTW 300V Wire - Heavy Duty Outdoor Power Cable

Our review of the 100ft 12/3 12 AWG SJTW 300V Wire finds it best suited for contractors, event electricians, and DIYers who need a durable, weather-resistant cable for temporary or semi-permanent power runs. The biggest reason to buy is its combination of stranded OFC conductors and an anti-ultraviolet PVC jacket that keeps the cord flexible and reliable in cold and hot conditions, making it a dependable choice for outdoor motor leads, generators, and lighting rigs.

Key Features

• Heavy Duty SJTW Construction: The SJTW thermoplastic jacket resists water and weather for dependable outdoor use in a wide temperature range from -40C to 105C.
• 12 AWG Oxygen Free Copper: Stranded OFC conductors improve conductivity and heat handling for safer, more efficient current delivery to motors and chargers.
• 72-Strand Flexibility: The 72 thin copper strands provide greater flexibility than solid wire, easing routing and connection in portable setups.
• Anti-Ultraviolet Jacket: The 0.9mm UV-resistant PVC jacket resists sunlight aging and maintains elasticity for longer outdoor life.
• 100 ft Length: A full 100 ft run reduces the number of splices and extends reach for construction sites, events, and marine applications.

Who It's For

Electricians and rental companies who need a flexible, durable cable for temporary power distribution, motor leads, generators, and outdoor lighting will appreciate this 12 AWG SJTW cord. Its stranded OFC construction suits applications where current capacity and corrosion resistance matter, such as powering pumps, transformers, and battery chargers.

Users who need a cable with a dedicated equipment grounding conductor should look elsewhere, because this product is a 3 conductor cord without an extra grounding wire. Also, if a smaller gauge, indoor-only wire or a cable with a molded plug is required, this loose 100 ft cord may not fit those needs.

Pros & Cons

Pros

• Durable SJTW jacket holds up to outdoor exposure and a wide temperature range.
• Stranded OFC conductors deliver improved conductivity and flexibility for motor and generator use.
• 100 ft length reduces splices and is convenient for job sites and events.
• UV-resistant jacket stays flexible and resists cracking over time.

Cons

• Not a 3+1 style; no extra grounding conductor is included, so separate grounding solutions may be required.

Specifications

Product Type	12 AWG SJTW 3 conductor cord
Length	100 ft
Voltage Rating	300V
Conductor	Stranded OFC (72 strands)
Jacket	Anti-ultraviolet PVC, 0.9mm
Insulation Thickness	Approx. 0.45mm PVC
Diameter	9.2mm

Our Verdict

This 100ft 12/3 12 AWG SJTW 300V wire is a solid value for anyone needing a flexible, weather-resistant power cord for outdoor and industrial tasks. It delivers reliable conductivity and durability thanks to stranded OFC conductors and a UV-resistant jacket, but buyers should confirm they do not need a dedicated grounding conductor before purchasing.

Frequently Asked Questions

Does this cord include a separate grounding wire?
No, this product is a 3 conductor cord without an extra grounding conductor; it is not a 3+1 type.

Can it be used outdoors year-round?
Yes, the SJTW construction and anti-ultraviolet PVC jacket are designed for outdoor use in temperatures from -40C to 105C.

Is the conductor solid or stranded?
The cord uses stranded OFC conductors with 72 thin copper strands for flexibility and improved conductivity.