---
product_id: 7702893
title: "12/2 Gauge Romex SIMpull NM-B Cable"
brand: "southwire"
price: "3677529₫"
currency: VND
in_stock: null
reviews_count: 13
category: "Southwire"
url: https://www.desertcart.vn/products/7702893-12-2-gauge-romex-simpull-nm-b-cable
store_origin: VN
region: Vietnam
---

# 600V voltage rating 12/2 gauge copper wiring for 20A circuits Patented SIMpull jacket for easy pulling 12/2 Gauge Romex SIMpull NM-B Cable

**Brand:** southwire
**Price:** 3677529₫
**Availability:** ❌ Out of Stock

## Summary

> ⚡ Power your projects with pro-grade ease and reliability!

## Quick Answers

- **What is this?** 12/2 Gauge Romex SIMpull NM-B Cable by southwire
- **How much does it cost?** 3677529₫ with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/7702893-12-2-gauge-romex-simpull-nm-b-cable)

## Best For

- southwire enthusiasts

## Why This Product

- Trusted southwire brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Value Meets Quality:** Premium copper wire with thick insulation at an affordable price—get professional results without the premium cost.
- • **Versatile Indoor Use:** Ideal for dry, above-ground residential wiring including outlets, switches, and branch circuits.
- • **Pro-Grade Reliability:** 600 volts rated copper wiring built to meet and exceed residential electrical code standards.
- • **Effortless Installation:** Patented SIMpull jacket reduces friction for smooth, hassle-free wire pulling every time.
- • **Trusted by Pros & DIYers:** Top-ranked and widely recommended for consistent, dependable performance on all projects.

## Overview

Southwire Romex 12/2 NM-B cable features a patented SIMpull jacket for easy installation, 600V copper wiring rated for 20-amp residential circuits, and is designed for dry, above-ground use. Trusted by professionals and DIYers alike, this 50ft coil delivers dependable, code-compliant performance with thick insulation and excellent value.

## Description

Product Description For general wiring of homes; stores; and shops. Southwire Romex Brand SIMpull NM-B (nonmetallic-sheathed) cable may be used for both exposed and concealed work in normally dry locations at temperatures not to exceed 90¬∞C (with ampacity limited to that for 60¬∞C conductors) as specified in the 2011 National Electrical Code. NM-B cable is primarily used in residential wiring as branch circuits for outlets; switches; and other loads. NM-B cable may be run in air voids of masonry block or tile walls where such walls are not wet or damp locations. Voltage rating for NM-B cable is 600 volts. From the Manufacturer For general wiring of homes; farm buildings; stores and shops. It is flame and moisture resistant; but should not be used in wet locations. Type NM-B is primarily used in residential wiring as branch circuits' for outlets; switches; and other loads. NM-B may be used for both exposed and concealed work in dry locations at conductor temperatures not to exceed 90oC. Ampacity limited to 60oC for conductors

Review: Reliable Powerhouse for DIY and Pros - Rating: ⭐⭐⭐⭐⭐ (5/5 stars) When it comes to electrical wiring, reliability and quality are paramount. The Southwire 12-2 NMW/G Wire (Romex) in yellow has proven itself as a trustworthy and versatile choice for both DIY enthusiasts and professionals. It's reassuring to know that the same product trusted by the pros is readily available for homeowners like me. Dependable Performance: ⭐⭐⭐⭐⭐ The Southwire 12-2 NMW/G Wire is synonymous with dependability. It consistently delivers outstanding performance, making it a go-to choice for various electrical projects. Whether you're tackling a new wiring installation or making repairs, you can count on this wire to get the job done. Effortless Handling: ⭐⭐⭐⭐⭐ Working with this wire is a breeze. It's designed with ease of use in mind, making it ideal for both DIY projects and professional installations. Pulling it through conduits or walls is smooth and hassle-free, saving you time and effort. Ideal for 20 Amp Circuits: ⭐⭐⭐⭐⭐ The Southwire 12-2 NMW/G Wire is perfectly suited for 20-amp circuits, providing the capacity and reliability needed to handle higher loads. Whether you're powering multiple outlets or appliances, this wire is up to the task. Proven Excellence: ⭐⭐⭐⭐⭐ Knowing that the same Southwire NMW/G Wire trusted by professionals is available for homeowners is reassuring. Its proven excellence and top-tier quality make it a standout choice for all your electrical needs. Affordable Quality: ⭐⭐⭐⭐⭐ Despite its professional-grade quality, the Southwire 12-2 NMW/G Wire is affordably priced. This combination of top-notch performance and great value ensures that you're getting the best of both worlds. In conclusion, the Southwire 12-2 NMW/G Wire (Romex) in yellow is the ultimate solution for electrical wiring. Its reliability, ease of use, and pro-approved quality make it a top choice for both DIY enthusiasts and professionals. I've used this wire in numerous projects around my house, and it has consistently delivered exceptional results. It's reassuring to know that I'm using the same product trusted by the pros. I wholeheartedly recommend the Southwire NMW/G Wire, and I'll continue to choose it for all my future electrical needs. It's a five-star product that offers excellence at an affordable price.
Review: Great Value and standard - This is the best length value to buy. The wire quality meets/exceeds code standards and the insulation is nice and thick. Stripping the wire is easy with any normal pair of wire strippers. We use it both indoors and outdoors (inside a sealed conduit).

## Features

- Coated in patented SIMpull Cable Jacket for easier pulling; stripping; and installation
- Romex Type NM-B Copper Building Wire is commonly applied in residential building wiring as a branch circuit for switches and outlets
- Installation above ground and in dry locations only
- The voltage rating of the cable is 600 volts
- NM-B cable may be run in air voids of masonry block or tile walls where such walls are not wet or damp locations

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000BQSL3G |
| Best Sellers Rank | #1,921 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #6 in Electrical Wire |
| Brand | Southwire |
| Color | Yellow |
| Date First Available | February 17, 2007 |
| Department | Electrical Wire |
| Gauge | 12.0 |
| Global Trade Identification Number | 00032886263088 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 4 pounds |
| Item model number | 28828222 |
| Manufacturer | Southwire |
| Material | Copper |
| No. of wires | 2 |
| Number of Cable Strands | 2 |
| Product Dimensions | 1 x 8 x 8 inches |
| UPC | 032886263088 |
| Voltage | 600 Volts |

## Product Details

- **Brand:** Southwire
- **Color:** Yellow
- **Gauge:** 12.0
- **Material:** Copper
- **Number of Cable Strands:** 2

## Images

![12/2 Gauge Romex SIMpull NM-B Cable - Image 1](https://m.media-amazon.com/images/I/51Et2IL9q+L.jpg)

## Questions & Answers

**Q: Can I use this wire with a 40amp 240v breaker for a 240v 2000w wallheater?**
A: Yes, it is possible to carry a 2000w 240V load on a 12/2 NM-B cable like this one. No, it will not pass an electrical inspection. The breaker must protect the wire, and if someone comes along and adds load to your heater circuit they could easily overheat the 12/2 and the 40A breaker would just let it fry as long as it never pulls 40 amps.

Neither #12 nor #10 is good for 40 amps - both would overhead on a 35A load.

You can drop down the breaker to a 240V 20A circuit breaker and both the cable and the load would be protected. It still would not pass inspection because of the improper color coding of this 12/2 cable. If the next owner of your home calls an electrician to rewire the house, he will think that your wall heater is 120V because standard household color coding is :
black = +120 volts (Bus A)
white = 0 volts (neutral wire)
red =-120V
bare = equipment ground (no current flow in during normal operation)
That is why people are advising you to use 12/3 or 14/3 cable - 3-conductor Romex-type cables have a red jacketed wire in the bundle which is the proper color to use alongside the black cable for the two "hot" wires in a 240-volt circuit. 

This NM-B cable has an insulation rating of 600V, so it can tolerate 240V operation. I have used 12/2 to feed a 240V circuit - I fed the cable from a 240V 20A circuit breaker and used a red felt-tip permanent marker to color the white wire. This still would not pass an electrical inspection but it addresses the safety issues associated with serving your heater with 12/2 cable as long as the wire remains dry. 

I don't know the National Electrical Code well enough to say whether or not a black electrical tape on the white wire would pass an electrical inspection - that is also a obvious signal that the white wire is not a neutral wire. 

The calculations of 8.3 amperes drawn by your 2000-watt heater are correct. Using a 15A 240V breaker instead of 20A would introduce no further safety issues.

Please do not use 12/2 to serve this load unless you mark the circuit as 240V in a can't-miss-it fashion, or the next person who tries to work on your wiring may assume that the white wire had 0 volts on it when it actually has 240 volts relative to the black wire - you may forget about it yourself and hurt yourself or your property sometime in the future. Misidentified wire is a cruel wiring mistake to leave behind. Happy wiring!

**Q: The description says this is a filter for a honeywell ac unit!! so is this wire or a filter??**
A: This is 12/2 nmb wire, we are working with amazon to get this fixed.

**Q: would this work to run a plug for a 8ooo btu air cond ?**
A: If its 110 volt yes, if it is 220 volt you will need 12/3. As long as it doesn't draw more than 20 amps, I would think an 8000 but air conditioner word be 110 volt and draw less than 20 amps.

**Q: I'm rewiring my whole house is this too good wire to use**
A: Heres where a little math is needed. 14G wire is good in most places for 15 amp breaker and runs. Your avg 75 watt light pulls .6 amps  (75/120) roughly, 40 watt = .3 amps, etc. You can run continuous at 90% amps, or 13.5 of 15. So u need to figure how many watts u will be running at a time, and if its continuous, no more than 13.5 amps. This probably confused you but its the basics.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Reliable Powerhouse for DIY and Pros
*by W***. on September 24, 2023*

Rating: ⭐⭐⭐⭐⭐ (5/5 stars) When it comes to electrical wiring, reliability and quality are paramount. The Southwire 12-2 NMW/G Wire (Romex) in yellow has proven itself as a trustworthy and versatile choice for both DIY enthusiasts and professionals. It's reassuring to know that the same product trusted by the pros is readily available for homeowners like me. Dependable Performance: ⭐⭐⭐⭐⭐ The Southwire 12-2 NMW/G Wire is synonymous with dependability. It consistently delivers outstanding performance, making it a go-to choice for various electrical projects. Whether you're tackling a new wiring installation or making repairs, you can count on this wire to get the job done. Effortless Handling: ⭐⭐⭐⭐⭐ Working with this wire is a breeze. It's designed with ease of use in mind, making it ideal for both DIY projects and professional installations. Pulling it through conduits or walls is smooth and hassle-free, saving you time and effort. Ideal for 20 Amp Circuits: ⭐⭐⭐⭐⭐ The Southwire 12-2 NMW/G Wire is perfectly suited for 20-amp circuits, providing the capacity and reliability needed to handle higher loads. Whether you're powering multiple outlets or appliances, this wire is up to the task. Proven Excellence: ⭐⭐⭐⭐⭐ Knowing that the same Southwire NMW/G Wire trusted by professionals is available for homeowners is reassuring. Its proven excellence and top-tier quality make it a standout choice for all your electrical needs. Affordable Quality: ⭐⭐⭐⭐⭐ Despite its professional-grade quality, the Southwire 12-2 NMW/G Wire is affordably priced. This combination of top-notch performance and great value ensures that you're getting the best of both worlds. In conclusion, the Southwire 12-2 NMW/G Wire (Romex) in yellow is the ultimate solution for electrical wiring. Its reliability, ease of use, and pro-approved quality make it a top choice for both DIY enthusiasts and professionals. I've used this wire in numerous projects around my house, and it has consistently delivered exceptional results. It's reassuring to know that I'm using the same product trusted by the pros. I wholeheartedly recommend the Southwire NMW/G Wire, and I'll continue to choose it for all my future electrical needs. It's a five-star product that offers excellence at an affordable price.

### ⭐⭐⭐⭐⭐ Great Value and standard
*by F***4 on November 9, 2025*

This is the best length value to buy. The wire quality meets/exceeds code standards and the insulation is nice and thick. Stripping the wire is easy with any normal pair of wire strippers. We use it both indoors and outdoors (inside a sealed conduit).

### ⭐⭐⭐⭐⭐ Garage Electrical
*by C***S on January 10, 2026*

Great product. Worked well for wiring up our garage expansion.

## Frequently Bought Together

- Southwire Romex Brand Simpull Solid Indoor 12/2 W/G NMB Cable 50ft coil - SW# 28828222
- Southwire Romex Brand Simpull Solid Indoor 14/2 W/G NMB Cable 50ft coil - SW# 28827422
- Southwire MSB22 One Device (22.5/Cu) with Adjustable Depth, Heavy Duty 42lb. Mounting Screws Included PVC ELECTRICAL BOX, 1 Gang Plus, Gray

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.vn/products/7702893-12-2-gauge-romex-simpull-nm-b-cable](https://www.desertcart.vn/products/7702893-12-2-gauge-romex-simpull-nm-b-cable)

---

*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-03-07*