🔍 Click to zoom
100ft Outdoor Indoor Extension Cord, 3-Outlet, 12/3 Gauge Extra Heavy Duty, 3 Prong SJTW
$64.99
Final price set by Amazon · may vary
EDITORIAL REVIEW — 100ft Outdoor Indoor Extension Cord, 3-Outlet, 12/3 Gauge Extra Heavy Duty, 3 Prong SJTW Assessed on the manufacturer's published specification and on how the format fits a working shift, by Steven...
Check Price on Amazon🔒 Amazon Associate · You pay the same price · We earn a small commission
Zero Sponsored ListingsNo paid placements. Rankings are never sold or influenced by manufacturers.
Independent Product ResearchBuilt from manufacturer specifications, published standards information, and cited sources
Standards MatterRatings and markings vary by model and variant — verify the manufacturer’s documented rating for your hazard
Built for Industrial BuyersResearch written for safety managers, procurement teams, and field supervisors.
EDITORIAL REVIEW — 100ft Outdoor Indoor Extension Cord, 3-Outlet, 12/3 Gauge Extra Heavy Duty, 3 Prong SJTW
Assessed on the manufacturer's published specification and on how the format fits a working shift, by Steven Eaton, WC Safety editor.
Amazon customer rating: 4.7 / 5 - WC Safety review of the 100ft Outdoor Indoor Extension Cord, 3-Outlet, 12/3 Gauge Extra Heavy Duty, 3 Prong SJTW.
Written by Steven Eaton, WC Safety Editorial, from the published marketplace listing. The score above is the live Amazon customer rating captured at review time - not a WC Safety test result. We did not laboratory-test this product.
Written by Steven Eaton, WC Safety Editorial, from the published marketplace listing. The score above is the live Amazon customer rating captured at review time - not a WC Safety test result. We did not laboratory-test this product.
The 100ft Outdoor Indoor Extension Cord, 3-Outlet, 12/3 Gauge Extra Heavy Duty, 3 Prong SJTW is one of our picks for the extension cord lineup. Everything below comes straight from the manufacturer's published listing - specs, capacities, and dimensions are theirs, not ours.
Cord gauge is a capacity rating: 12 AWG carries 15 amps at 100 feet where a 16-gauge cord overheats at the same load. Jobsite duty means SJTW-jacketed, grounded, lighted-end cords sized for the tool at the far end - and GFCI protection on the circuit, which OSHA requires on construction sites. Inspect for cuts and crushed jackets before each use; damaged cords retire.
Key details, quoted from the manufacturer's published listing:
- LONG LASTING PERFORMANCE: Engineered to endure harsh conditions, this heavy duty extension cord remains resilient against extreme temperatures. With a superior indoor / outdoor extension cord waterproof design, it offers unmatched durability and reliability for home, work, or construction …
- WITHSTANDS WEAR & TEAR: Featuring a robust vinyl jacket, your new 3 prong extension cord stands up to oil, grease, moisture, and abrasion, safeguarding against electrical hazards and wear. This power cord extension ensures safe operation across diverse environments, making it a trusted …
- LIGHTED END FOR VISIBILITY & SAFETY: With a lighted end to indicate power and a brightly colored PVC jacket, this three prong extension cord minimizes tripping hazards and improves safety in busy or poorly lit areas. Stay safe while powering up with an easily noticeable extension cable. The …
- VERSATILITY FOR EVERY TASK: Powering a range of heavy-duty equipment from drills and saws to lawn mowers and holiday lights - this electric extension cord is a versatile powerhouse. Ready to support all your needs with ease and efficiency, the LifeSuppyUSA electric cord is your go-to tool …
- POWERFUL: This 100FT, 12 Gauge 3-prong, 3-Outlet, SJTW, Yellow extension cord is designed for extra safety and durability, The cable extension electrical cord supports 15 AMP, 125 Volts, and up to 1875 Watts, ensuring robust performance for high-demand equipment …
See every extension cord, power them from a CO-shutoff generator, light the work with jobsite lighting, and browse all jobsite equipment.
What to check before you buy
Gauge and grounding decide safety, not the jacket colour. Voltage drop rises with length and falls with gauge, so a 100-ft run needs heavier copper than the same load at 25 ft. On construction sites, OSHA 29 CFR 1926.404(b)(1) requires GFCI protection on all 120-volt, single-phase, 15- and 20-ampere receptacles not part of the permanent wiring — or a documented assured equipment grounding conductor program in its place.
- Gauge against length and load
- Voltage drop rises with length and falls with wire size. A 100 ft run pulling serious current needs 12 AWG or heavier; 16 AWG is for light loads over short distances.
- Outdoor rating
- Cords for outdoor or wet use carry a W in the type designation. Indoor-rated cords used outside are a shock hazard, not just a durability problem.
- GFCI protection
- On construction sites, receptacles not part of the permanent wiring generally require GFCI protection or an assured equipment grounding conductor program.
- Condition of the jacket and plug
- OSHA requires that flexible cords be removed from service if the outer jacket is damaged or the grounding pin is missing or bent. Repairs with tape are not compliant.
How it compares to other extension cords we review
Pricing moves frequently — check the live Amazon listing. Browse the full extension cords range, or see all jobsite equipment.
The buying criteria for this category are laid out in extension cord gauge chart, OSHA extension cord requirements and extension cords.
Written by Steven Eaton, WC Safety editor. WC Safety is an independent PPE review site, holds no inventory and sells nothing directly; Amazon links are affiliate links that earn a commission at no cost to you and never affect the assessment. This page is not medical, legal or regulatory advice.
Where this sits against the alternatives
Comparable options and the trade-offs between them are set out in the category guides linked below; this listing is one option within that range, not a category verdict.
How this page is put together
Specifications come from the manufacturer’s own published listing for this model, and any standard named here is quoted from its published text. WC Safety runs no laboratory and performs no testing; where an attribute is not published, this page says so rather than estimating it.
Brand / Vendor
Generic
Model / SKU
—
Product Type
Extension Cord
Price
$64.99 (Amazon)
Availability
Check current availability on Amazon
No Paid Placements
Every product earns its place on documented safety credentials and specifications — never advertising spend.
Industrial Grade Only
Coverage focuses on equipment built for professional use in manufacturing, construction, and industrial environments.
Independent Product Research
Product information is compiled from manufacturer specifications, published standards information, compatibility data, and other cited sources.
Affiliate Disclosure
WC Safety may earn commissions from qualifying purchases made through affiliate links. Affiliate relationships never change the specifications presented.
Verified Buyer Reviews
Customer Reviews
Share Your Experience
Write a Review
Thank you for your review!
Your submission has been received and will be published after verification.