20 Best 12/3 Gauge Wire [2024]

Are you looking for the best 12/3 Gauge Wire? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling 12/3 Gauge Wire.

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# Preview Product
1 Southwire 63947628 100' 12/3 with ground Romex brand SIMpull residential indoor electrical wire type... Southwire 63947628 100' 12/3 with ground Romex brand SIMpull residential indoor electrical wire...
2 50 Foot of 12/3 Electrical Wire - SJOOW Jacket, 20 Amp Rating 50 Foot of 12/3 Electrical Wire - SJOOW Jacket, 20 Amp Rating
3 Southwire 63947622 50' 12/3 with ground Romex brand SIMpull residential indoor electrial wire type... Southwire 63947622 50' 12/3 with ground Romex brand SIMpull residential indoor electrial wire...
4 (600V) 12/3 AWG Gauge Copper, SOOW Portable Outdoor Flexible Wire Cable - 25' Foot (600V) 12/3 AWG Gauge Copper, SOOW Portable Outdoor Flexible Wire Cable - 25' Foot
5 Southwire 63947621 25' 12/3 with ground Romex brand SIMpull residential indoor electrical wire type... Southwire 63947621 25' 12/3 with ground Romex brand SIMpull residential indoor electrical wire...
6 12/3 AWG Triplex Tinned Marine Wire, Black/Green/White 50 Feet 12/3 AWG Triplex Tinned Marine Wire, Black/Green/White 50 Feet
7 12 AWG Power Cord 12FT Open End Heavy Duty 12 Gauge 3 Prong 12 Foot 3 Wire SJT Power Supply Cord... 12 AWG Power Cord 12FT Open End Heavy Duty 12 Gauge 3 Prong 12 Foot 3 Wire SJT Power Supply Cord...
8 SOUTHWIRE COMPANY #13058355 250' 12/3 W/G UF Cable SOUTHWIRE COMPANY #13058355 250' 12/3 W/G UF Cable
9 12/3 Bulk Wire - SJOOW Jacket, 20 Amp Rating, 100 Foot Roll - Iron Box # IBX-4045-100 (100 ft) 12/3 Bulk Wire - SJOOW Jacket, 20 Amp Rating, 100 Foot Roll - Iron Box # IBX-4045-100 (100 ft)
10 Power Cord Pigtail 12 AWG Heavy Duty 6ft 12 Gauge 3 Prong Stripped Off 3 Wire SJT Power Supply AC... Power Cord Pigtail 12 AWG Heavy Duty 6ft 12 Gauge 3 Prong Stripped Off 3 Wire SJT Power Supply AC...
11 Superior Electric EC123 9 Feet 12 AWG SJO 3 Wire 125 Volt NEMA 5-15P Electrical Cord Superior Electric EC123 9 Feet 12 AWG SJO 3 Wire 125 Volt NEMA 5-15P Electrical Cord
12 Green THHN Wire - 12 AWG - 10 Feet - Solid Copper Grounding Wire, Proudly Made in America - Ground... Green THHN Wire - 12 AWG - 10 Feet - Solid Copper Grounding Wire, Proudly Made in America -...
13 12/3 AWG Triplex Tinned Marine Wire, Black/Green/White 100 Feet 12/3 AWG Triplex Tinned Marine Wire, Black/Green/White 100 Feet
14 GG Grand General 55306 Parallel Primary 3-Wire 100ft Roll with Spool for trucks, automobile and more... GG Grand General 55306 Parallel Primary 3-Wire 100ft Roll with Spool for trucks, automobile and...
15 Southwire 55808701 12/3 250-Feet SJOOW Flexible Portable Cord, 250', Black Southwire 55808701 12/3 250-Feet SJOOW Flexible Portable Cord, 250', Black
16 6-ft 12/3 Heavy Duty Lighted SJTW Indoor / Outdoor Extension Cord by Watt's Wire - Short 6' 12-Gauge... 6-ft 12/3 Heavy Duty Lighted SJTW Indoor / Outdoor Extension Cord by Watt's Wire - Short 6'...
17 Ancor 131310 Marine Grade Electrical Duplex Tinned Boat Cable - 12 AWG, Triplex, Flat Cable,... Ancor 131310 Marine Grade Electrical Duplex Tinned Boat Cable - 12 AWG, Triplex, Flat Cable,...
18 2 Pack 10ft PS3 Controller Charging Cable, USB 2.0 Type A to Mini B Cable Sync Cord for Sony... 2 Pack 10ft PS3 Controller Charging Cable, USB 2.0 Type A to Mini B Cable Sync Cord for Sony...
19 EcoSmart 8 KW Electric Tankless Water Heater, 8 KW at 240 Volts with Patented Self Modulating... EcoSmart 8 KW Electric Tankless Water Heater, 8 KW at 240 Volts with Patented Self Modulating...
20 Ultimate Guide: Wiring, 8th Updated Edition (Ultimate Guides) Ultimate Guide: Wiring, 8th Updated Edition (Ultimate Guides)
SaleBestseller No. 1
Southwire 63947628 100' 12/3 with ground Romex brand SIMpull residential indoor electrical wire type...
  • Coated in patented SIMpull Cable Jacket for easier pulling, stripping, and installation
  • Primarily used in residential wiring as branch circuits for outlets, switches, and other loads
  • UL Listed type NM-B
  • 12 gauge, 3 conductors with ground, 100' per coil
  • Made in America
Bestseller No. 2
50 Foot of 12/3 Electrical Wire - SJOOW Jacket, 20 Amp Rating
  • 12/3 Cable
  • 20 Amp Rating
  • SJOOW Heavy-Duty Jacket
  • 12 AWG
  • AKA: Bulk Portable Cord
SaleBestseller No. 3
Southwire 63947622 50' 12/3 with ground Romex brand SIMpull residential indoor electrial wire type...
  • Coated in patented SIMpull Cable Jacket for easier pulling, stripping, and installation
  • Primarily used in residential wiring as branch circuits for outlets, switches, and other loads
  • UL Listed type NM-B
  • 12 gauge, 3 conductors with ground, 50' per coil
  • Made in America
Bestseller No. 5
Southwire 63947621 25' 12/3 with ground Romex brand SIMpull residential indoor electrical wire type...
  • Coated in patented SIMpull Cable Jacket for easier pulling, stripping, and installation
  • Primarily used in residential wiring as branch circuits for outlets, switches, and other loads
  • UL Listed type NM-B
  • 12 gauge, 3 conductors with ground, 25' per coil
  • Made in America
Bestseller No. 6
12/3 AWG Triplex Tinned Marine Wire, Black/Green/White 50 Feet
  • Type III 65/.0100 Stranding
  • Flat / Nominal OD .230 x .528 inch
  • High Flexibility
  • Tin plated copper stranding with a jacket resistant to moisture, oil, chemicals, gasoline fuel
  • Designed to meet SAE, ABYC, UL and Coast Guard requirements, 600 volts, 105°C dry, 75°C wet
Bestseller No. 7
12 AWG Power Cord 12FT Open End Heavy Duty 12 Gauge 3 Prong 12 Foot 3 Wire SJT Power Supply Cord...
  • 12 AWG 3 Wire Power Cord, Enhanced Strain Relief for better performance
  • 20 Amp working current for wire,15Amp for Plug, excellent replacement cord for high power appliance
  • 300V AC Max, suitable for 120V or 277V Project
  • OPEN END- Pigtail cable with 3 stripped wire, another end with 3-prong plug grounded
  • Heavy Duty, commercial grade, suitable for Angle grinder,Electrical Saw Power Cord, Washing machine, Electrical Door, etc
SaleBestseller No. 9
12/3 Bulk Wire - SJOOW Jacket, 20 Amp Rating, 100 Foot Roll - Iron Box # IBX-4045-100 (100 ft)
  • 12/3 Bulk Wire
  • 20A Rated
  • 3-Wire Portable Cord
  • Heavy-Duty SJOOW jacket
  • Stranded Copper
Bestseller No. 10
Power Cord Pigtail 12 AWG Heavy Duty 6ft 12 Gauge 3 Prong Stripped Off 3 Wire SJT Power Supply AC...
  • 12/3 Power Cord, Enhanced Strain Relief for better performance
  • 20 Amp working current for wire,15Amp for Plug, excellent replacement cord for high power appliance
  • 300V AC Max, suitable for 120V or 277V Project
  • OPEN END- Pigtail cable with 3 stripped wire, another end with 3-prong plug,
  • Heavy Duty, commercial grade, suitable for power tool, Air condition, Dishwasher power cord, Refrigerator etc
Bestseller No. 11
Superior Electric EC123 9 Feet 12 AWG SJO 3 Wire 125 Volt NEMA 5-15P Electrical Cord
  • Gauge: 12 AWG | Volts: 125V | Watts: 1875
  • Amperage: 15A | Type: SJO | Insulated for: 300V
  • Length: 9 Ft. | Wires: 3 | NEMA: 5-15P
  • Case Insulation: Rubber/Jute Fiber | Plug: Plastic Molded
  • Approval: UL/CL | Packaging: Individually wrapped in a sleeve | Boot: Rubber
SaleBestseller No. 12
Green THHN Wire - 12 AWG - 10 Feet - Solid Copper Grounding Wire, Proudly Made in America - Ground...
  • Includes: 10 feet of Solid Copper - Green Jacket THHN / Building Wire / Grounding Wire
  • Perfect For: Works well for a variety of home and workspace applications, and provides a flexible solution for long installation runs
  • Premium Construction: Insulation is high heat and moisture resistant - 12 AWG THHN PVC jacket - Indoor and Outdoor rated (600 V and 90 C/194 F)
  • Versatility: Approved for major CATV and Satellite providers including Comcast (Xfinity) DirecTV, Satellite Dish, Charter, Spectrum, Cox Cable TV &...
  • Quality Assurance: UL Listed and CSA certified - and Proudly manufactured in the United States , Includes a US manufacturers warranty
Bestseller No. 13
12/3 AWG Triplex Tinned Marine Wire, Black/Green/White 100 Feet
  • Type III 65/.0100 Stranding
  • Flat / Nominal OD .230 x .528 inch
  • High Flexibility
  • Tin plated copper stranding with a jacket resistant to moisture, oil, chemicals, gasoline fuel
  • Designed to meet SAE, ABYC, UL and Coast Guard requirements, 600 volts, 105°C dry, 75°C wet
Bestseller No. 14
GG Grand General 55306 Parallel Primary 3-Wire 100ft Roll with Spool for trucks, automobile and more...
  • High quality primary wire roll for trucks, automobiles, trailers, tractors, utility vehicles, RVs, buses, boats and more
  • 100ft in a spool roll, 18 gauge wire, and 3 conductor/wire copper stranded
  • The parallel wires run a long side by side and never splits
  • Flexible black, red and white PVC outer-jacket resists water, chemical, oil and abrasion; Temperature range up to 105C
  • Sold Individually
SaleBestseller No. 15
Southwire 55808701 12/3 250-Feet SJOOW Flexible Portable Cord, 250', Black
  • AWG size: 12/3
  • Voltage rating of 300 volts
  • Cord is rohs Compliant
  • Stranded cord with 65 strands
  • Oil resistant, water resistant, and abrasion resistant
Bestseller No. 16
6-ft 12/3 Heavy Duty Lighted SJTW Indoor / Outdoor Extension Cord by Watt's Wire - Short 6' 12-Gauge...
  • Watts Wire's Grounded 12-Gauge (12/3) 6-foot Lighted w/ Ground Extension Cords are the perfect cord all around. Our cords are designed around the...
  • Our heavy-duty power cords are made with an SJTW thermoplastic which is suitable to temperatures from -40°F to 130°F. Our double jacketed cords...
  • Our cords use 12-Gauge soft-drawn copper to give 120V 15-amps with minimal voltage drop providing all the power you require! Our power cords are the...
  • Our cords include strength adding poly strands in the cord to make it handle heavy day after day use. These can support up to 150lbs without damage!...
  • Designed to OSHA and UL 817 requirements! Corrosion, fire and moisture resistant; with built-in strain-relief and unbreakable molded NEMA 5-15 (US)...
SaleBestseller No. 17
Ancor 131310 Marine Grade Electrical Duplex Tinned Boat Cable - 12 AWG, Triplex, Flat Cable,...
  • Manufactured from individual copper strands and tinned to perform in the harshest marine environments.
  • Ultra-flexible Type 3 stranding resists fatigue from vibration and provides added corrosion protection.
  • Exceeds all UL 1426, US Coast Guard Charter boat (CFR title 46) and ABYC standards
  • Exclusive insulation is rated at 600 Volts.
Bestseller No. 18
2 Pack 10ft PS3 Controller Charging Cable, USB 2.0 Type A to Mini B Cable Sync Cord for Sony...
  • 🎮 MADE FOR GAMING: Specifically designed for Sony PS3/ PS3 Slim/ PS Move Wireless controllers, also compatible with Digital Cameras, TI-84 Plus CE...
  • 🎮 MAGNETIC RING DESIGN: Provide optimal signal clarity and shielding to minimize interference. No power loss with this premium cable with Magnetic...
  • 🎮 10FT EXTRA-LONG/ PLAY & CHARGE: Extra 10ft cable length provides the freedom you need to sit back and enjoy playing at comfortable distance,...
  • 🎮 HIGH SPEED & DURABILITY: Supports Hi-Speed USB 2.0 transfer rate at up to 480 Mbps, backwards compliant with full-speed USB 1.1 (12 Mbps) and...
  • 🎮 QUALITY GUARANTEE: Full money back if you are not satisfied with quality, No questions asked policy which makes this purchase a no-brainer. And...
SaleBestseller No. 19
EcoSmart 8 KW Electric Tankless Water Heater, 8 KW at 240 Volts with Patented Self Modulating...
  • The product is highly durable
  • The product is easy to use
  • Manufactured in China
  • Heating elements are durable and are threaded for easy replacement
  • Activation Flow - 0.3 GPM
Bestseller No. 20
Ultimate Guide: Wiring, 8th Updated Edition (Ultimate Guides)
  • Amazon Kindle Edition
  • Home Improvement (Author)
  • English (Publication Language)
  • 308 Pages - 11/01/2020 (Publication Date) - Creative Homeowner (Publisher)

Having trouble finding a great 12/3 Gauge Wire?

This problem is well understood by us because we have gone through the entire 12/3 Gauge Wire research process ourselves, which is why we have put together a comprehensive list of the best 12/3 Gauge Wires available in the market today.

After hours of searching and using all the models on the market, we have found the best 12/3 Gauge Wire for 2023. See our ranking below!

How Do You Buy The Best 12/3 Gauge Wire?

Do you get stressed out thinking about shopping for a great 12/3 Gauge Wire? Do doubts keep creeping into your mind?

We understand, because we’ve already gone through the whole process of researching 12/3 Gauge Wire, which is why we have assembled a comprehensive list of the greatest 12/3 Gauge Wire available in the current market. We’ve also come up with a list of questions that you probably have yourself.

John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for 12/3 Gauge Wire that you consider buying. Your questions might include the following:

  • Is it worth buying an 12/3 Gauge Wire?
  • What benefits are there with buying an 12/3 Gauge Wire?
  • What factors deserve consideration when shopping for an effective 12/3 Gauge Wire?
  • Why is it crucial to invest in any 12/3 Gauge Wire, much less the best one?
  • Which 12/3 Gauge Wire are good in the current market?
  • Where can you find information like this about 12/3 Gauge Wire?

We’re convinced that you likely have far more questions than just these regarding 12/3 Gauge Wire, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for 12/3 Gauge Wire, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible 12/3 Gauge Wire. Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an 12/3 Gauge Wire buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information.

How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available 12/3 Gauge Wire currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of 12/3 Gauge Wire has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an 12/3 Gauge Wire?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your 12/3 Gauge Wire.
  5. Customer Ratings: Number ratings grade 12/3 Gauge Wire objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their 12/3 Gauge Wire.
  7. Product Quality: You don’t always get what you pay for with an 12/3 Gauge Wire, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an 12/3 Gauge Wire is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining 12/3 Gauge Wire information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding 12/3 Gauge Wire is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

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FAQ:

Q: What are the differences between a 12 and 14 gauge wire?

A: For nonferrous wires (like copper electrical wire) in the United States, 12 and 14 gauge are sizes in the American wire gauge system. The diameter of solid 12 AWG wire is approximately 0.0808 inches (2.053 mm), and 14 AWG is 0.641 inches (1.628 mm). Therefore, 12 AWG wire is about 26% thicker and has 59% more cross-sectional area than 14 AWG wire.

Q: What is use 12-3 wire for?

A: ROMEX® 12/3 wire is used in buildings for circuits that use higher amperage than the standard 20 amps. Most people are not familiar with this type of wire because it is used to hook up heavy-draw appliances such as water heaters and central air conditioning. In most cases, there is no plug outlet because it is directly wired into the unit itself.

Q: What is the Maximum amps for 12 gauge wire?

A: A 12-gauge wire can carry between 15 and 20 amps for normal electrical wires. When wiring chassis, 12-gauge wire can carry a maximum of 41 amps along the metal conductor. The conductive part of a 12-gauge wire is 0.0808 inch in diameter.

Q: What is the thickness of 12 gauge wire?

A: As the gauge number increases, the thickness drops by 10 percent. For example, a 12 gauge sheet is 2.732 millimeters thick, and a 13 gauge sheet is 2.391 millimeters thick. (2) For wire thickness there are two scales, see American wire Gauge for the first one.