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saadfahim 11.7K Views
Feb 20, 2026 3:48 AM

100' Southwire Outdoor 12/3 SJTW Heavy Duty 15-Amp Extension Cord

$57

$80

28% off
+ Free Shippingat Walmart
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Deal Details
Walmart has 100' Southwire Outdoor 12/3 SJTW Heavy Duty 15-Amp Extension Cord for $57.35. Shipping is free.

Thanks to Community Member saadfahim for finding this deal.

Features:
  • 100 feet of cord allows for connections far away from any outlet
  • Capable of handling the needs of heavy power tools such as table saws and corded drills.
  • Heavy duty SJTW jacket makes for safe use outdoors
  • Plug ends light up when power is active
  • Operates in temperatures as low as -40 F and as high as 160 F
  • Meets OSHA standards for use in a professional environment
  • Bright yellow color for easy visibility in grass or behind bushes
  • Water resistant for added safety
  • Specifications:
  • Voltage: 125 volts
  • Amperage: 15 amps
  • Color: Yellow
  • Manufacturer warranty: 1-year warranty

Editor's Notes

Written by powerfuldoppler | Staff
  • About this deal:
    • Our research indicates that this offer is $30.94 lower (35% savings) than the next best available price from a reputable merchant with prices starting from $88.29
  • About this product:
    • Rating of 4.6 from over 120 customer reviews.

Original Post

Written by saadfahim
Product Info
Community Notes
About the Poster
Deal Details
Product Info
Community Notes
About the Poster
Walmart has 100' Southwire Outdoor 12/3 SJTW Heavy Duty 15-Amp Extension Cord for $57.35. Shipping is free.

Thanks to Community Member saadfahim for finding this deal.

Features:
  • 100 feet of cord allows for connections far away from any outlet
  • Capable of handling the needs of heavy power tools such as table saws and corded drills.
  • Heavy duty SJTW jacket makes for safe use outdoors
  • Plug ends light up when power is active
  • Operates in temperatures as low as -40 F and as high as 160 F
  • Meets OSHA standards for use in a professional environment
  • Bright yellow color for easy visibility in grass or behind bushes
  • Water resistant for added safety
  • Specifications:
  • Voltage: 125 volts
  • Amperage: 15 amps
  • Color: Yellow
  • Manufacturer warranty: 1-year warranty

Editor's Notes

Written by powerfuldoppler | Staff
  • About this deal:
    • Our research indicates that this offer is $30.94 lower (35% savings) than the next best available price from a reputable merchant with prices starting from $88.29
  • About this product:
    • Rating of 4.6 from over 120 customer reviews.

Original Post

Written by saadfahim

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Top Comments

Community Reviews

This 100 foot 12 gauge Southwire cord is built for heavy duty use, with full copper conductors and solid plug connectors that stay barely warm under a 1800 watt heater load. The 12 gauge rating makes it the right class for higher draw jobs like heaters and jump houses, and the 15 amp label appears tied to the plug style and cord length rather than the wire itself. The tradeoff is weight, with the cord landing around 14 pounds and feeling very heavy. A sturdy long run when durability matters more than portability.

Common Questions (5)

  • Yes. The 100 ft 12/3 cord is reported to be very heavy, with one estimate putting it at about 14 lb. It is also described as staying barely warm under an 1800W heater load.

  • It is used for high-load jobs such as an 1800W heater and jump houses, and 12-gauge is preferred over thinner 16-gauge cords for those loads. The practical reason is that thinner cords can trip breakers under heavy draw.

  • The 15A rating is likely tied to the plug and receptacle compatibility, not the wire gauge alone. 12-gauge wire can carry 20A, but this cord's plug reportedly will not fit a 20A receptacle.

  • Yes, it is described as 100% copper with solid plug connectors. That is contrasted with cheaper CCA cords that use copper-clad aluminum and thinner ends.

  • If you do not need the full 100 ft, two 50 ft cords can cost about the same or less at Costco on sale. That can be more practical when shorter runs are enough.

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27 Comments

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Feb 21, 2026 12:04 AM
3.6K Comments
Joined Dec 2003
opfreakFeb 21, 2026 12:04 AM
3.6K Comments
flexiable for snowblower usage?
Feb 21, 2026 1:22 AM
1 Comments
Joined May 2020
FantasticSink841Feb 21, 2026 1:22 AM
1 Comments
Quote from opfreak View quoted comment :
flexiable for snowblower usage?
This is what I was just looking through the comments to confirm before I buy.
Feb 21, 2026 3:17 AM
657 Comments
Joined Sep 2020
ThriftyThread5737Feb 21, 2026 3:17 AM
657 Comments
Quote from Saugeye View quoted comment :
I have several of these that I've bought over the years on sales. There's nothing worse than going to some other dood's house and watching his jump houses blow his breaker because he's running 16ga Christmas light extension cords to them.

Have a 12ga extension cord. Be a man.
Shut your dirty mouth you can run anything on those 18 gauge green extension cords! When they say low voltage lighting on them it's just a recommendation!
2
1
Feb 21, 2026 3:18 AM
657 Comments
Joined Sep 2020
ThriftyThread5737Feb 21, 2026 3:18 AM
657 Comments
These are super heavy and tangle all up well 10/10 would buy again! They are 100% copper too !
Last edited by ThriftyThread5737 February 20, 2026 at 07:21 PM.
Feb 21, 2026 2:49 PM
152 Comments
Joined Apr 2005
WarmedCookieFeb 21, 2026 2:49 PM
152 Comments
Quote from moarKowbell View quoted comment :
What gauge is this cord?
the first number in 12/3 indicates the gauge, so 12 gauge. The second number, 3, is basically the number of prongs. (hot, neutral, ground)
1
Feb 23, 2026 2:44 AM
284 Comments
Joined Nov 2013
Biker4MacFeb 23, 2026 2:44 AM
284 Comments
I've got a few Southwire extension cords. They all continue to serve me well. They're durable and quality.
Mar 2, 2026 2:01 PM
108 Comments
Joined Mar 2024
CleverMoney831Mar 2, 2026 2:01 PM
108 Comments
A must have!

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Mar 2, 2026 2:13 PM
39.5K Comments
Joined Nov 2005
Dr. JMar 2, 2026 2:13 PM
39.5K Comments
Quote from FantasticSink841 View quoted comment :
This is what I was just looking through the comments to confirm before I buy.
It's FPVC. It will get rock hard/rigid with cold temps. You need to look for a rubber extension cord which are harder to find because they're $$$. If I were pressed for the application I'd make a cable:

https://www.lowes.com/pd/Southwir...t/50148240
Mar 10, 2026 12:55 AM
853 Comments
Joined Dec 2003
kvjimboMar 10, 2026 12:55 AM
853 Comments
My order was canceled.
Mar 10, 2026 3:14 AM
366 Comments
Joined Mar 2013
2QuikMar 10, 2026 3:14 AM
366 Comments
Quote from kvjimbo View quoted comment :
My order was canceled.
Mine too, 👎
Mar 14, 2026 1:45 AM
99 Comments
Joined Jun 2009
canon.phreakMar 14, 2026 1:45 AM
99 Comments
Quote from 2Quik View quoted comment :
Mine too, 👎
I reordered after the cancellation, just in case if they brought in fresh stock. Fingers crossed.
Mar 18, 2026 3:28 AM
1.1K Comments
Joined Dec 2004
lebulldogMar 18, 2026 3:28 AM
1.1K Comments
First got a 14g to recharge my EV at home. The wire extension got so hot it blew the 20A circuit. Then got this 12g and it still was not working right. Had to get a 10g and no longer have any problems and recharge at 12A.

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