---
title: "6/3 Wire with Ground — $1.1M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/6-3-wire-with-ground"
last_updated: "2026-08-08T09:36:00.521Z"
locale: en
meta:
description: "Niche score 43/100 · $1.1M/yr market · 286K searches/yr · $164.66 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 43/100 · $1.1M/yr market · 286K searches/yr · $164.66 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "6/3 Wire with Ground — $1.1M/yr Amazon US Niche (2026) - Flapen"
---
# **6/3 wire with ground**
**Skip it**
Prices mostly outside the sweet spot ($44.06–$390.46) — this niche doesn't clear our bar today.
Market size 80Growth 21Conversion 30Competition 54Returns 41Price range 16Avg price 53Brand share 25Review moat 89Quality gap 19
**Review moat**
**Great****224.04**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Great****$1.1M**
$1.1M/yr · 286K searches
**Competition**
**Good****53%**
top-5 click share — leaders hold, buyers still browse
**Avg price**
**Good****$164.66**
avg listing price — sweet spot $15–$100
**Returns**
**Okay****3.7%**
return rate — above 5% kills the launch gate
**Conversion**
**Okay****2.4%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Okay****90%**
top-5 brand share — brands hold most of the demand
**Growth**
**Bad****-7.0%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Price range**
**Bad****$44.06–$390.46**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Signals**[** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
According to Flapen's Amazon United States niche tracking, 6/3 wire with ground is a $1.1M/yr Amazon United States market (286K searches/yr). The top 5 brands hold 90% of demand. Verdict: Skip it — 43/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **6/3 wire with ground market data**
- **Units sold / yr**
- **6K–8K**
- avg 250–500/product
- **Revenue / yr**
- **$988K–$1.3M**
- units × avg price
- **Conversion rate**
- **2.4%**
- **Avg BSR**
- **#571**
- **Page quality**
- **0%**
- **Prime**
- **88%**
- **Sponsored**
- **84%**
- **Out of stock**
- **1.2%**
- **Avg brand age**
- **53 months**
- **Avg seller age**
- **149 days**
## **Competition & brand share**
The top 5 products take 53% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**8 **▼falling
**Sellers**
**32**
**Top-5 brand share**
**90%**
Top 20: 100%
**Top-5 click share**
**53%**
Top 20: 93%
**Open market**
**5%**
- XMK35% - Southwire25% - energeaster15% - ARIZONA ELECTRICAL SOLUTIONS9% - MOOKEERF5% - wirenco5% - Open — no brand owns it (2 brands, 5%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -7.0% search growth over the last 90 days.
7K5KSpike '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.2×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/6-3-wire-with-ground/trend)
## **Top 6/3 wire with ground search terms**
- **6/3 romex**77K/yr-8.1%2.5% conv. - **6/3 wire with ground**73K/yr-12.7%1.7% conv. - **6/3 wire**37K/yr-5.6%1.4% conv. - **6-3 romex**14K/yr+8.6%2.8% conv. - **6-3 wire**14K/yr-3.6%1.0% conv. - **6/3 romex 50ft**7K/yr-20.1%2.9% conv. - **6/3 wire with ground 100 ft**9K/yr-26.0%1.1% conv. - **6/3 romex 125 ft**7K/yr+11.6%2.9% conv. - **6-3 wire with ground**6K/yr+13.4%1.9% conv. - **6/3 wire 100 ft**4K/yr-6.6%0.6% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/6-3-wire-with-ground/search-terms)
## **Top 6/3 wire with ground products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%$113K20%$226K30%$339K40%$452K101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Southwire 63950002 125ft. 6 Gauge 3 Conductor Nonmetallic Sheathed Type NM-B Cable Black**Southwire**$386.41**4.7★834 rev](https://www.amazon.com/dp/B001D4C2OO) [2**NM-B 6/3 Wire with Ground 25ft 6/3 NM-B Wire Copper 6 AWG 3 Conductor with Ground Nonmetallic Sheathed NMB Cable 6-3 Residential Indoor Electrical Wiring for Branch Circuit Switche Outlet Other Load**XMK**$107.85**4.8★257 rev](https://www.amazon.com/dp/B0F21BHSST) [3**NM-B 6/3 Wire with Ground 35ft 6 AWG Copper Wire 6 Gauge 3 Conductor Nonmetallic Sheathed 6/3 NM-B Cable with Ground Residential Indoor Electrical Wiring for Branch Circuit Switches Outlets Other Load**XMK**$143.92**4.8★257 rev](https://www.amazon.com/dp/B0F21HWMQR) [4**Solid Indoor 6/3 Type NM-B Pure Copper Cable 125FT Black 6 AWG 3 Conductors with Ground Wire**energeaster**$390.46**4.5★16 rev](https://www.amazon.com/dp/B0DZCCR7NH) [5**Solid Indoor 6/3 Type NM-B Pure Copper Cable 50FT Black 6 AWG 3 Conductors with Ground Wire**energeaster**$206.55**4.5★16 rev](https://www.amazon.com/dp/B0G417D6BK)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Solid Indoor 6/3 Type NM-B Pure Copper Cable 15FT Black 6 AWG 3 Conductors with Ground Wire**energeaster**$64.52**16 rev8mo ago](https://www.amazon.com/dp/B0G42T4RMF) [**Solid Indoor 6/3 Type NM-B Pure Copper Cable 125FT Black 6 AWG 3 Conductors with Ground Wire**energeaster**$390.46**16 rev8mo ago](https://www.amazon.com/dp/B0DZCCR7NH) [**Solid Indoor 6/3 Type NM-B Pure Copper Cable 50FT Black 6 AWG 3 Conductors with Ground Wire**energeaster**$206.55**16 rev8mo ago](https://www.amazon.com/dp/B0G417D6BK) [**6/3 Wire with Ground - 5FT NM-B 6 Gauge Non-Metallic Sheathed Cable 100% Pure Copper 6 AWG 3 Conductor Residential Indoor Wire for Outlets Switches Other Loads and Lighting Wiring Projects etc.**MOOKEERF**$44.06**24 rev1y ago](https://www.amazon.com/dp/B0FFSZGNZS) [**6/3 Wire with Ground - 50FT NM-B 6 Gauge Non-Metallic Sheathed Cable 100% Pure Copper 6 AWG 3 Conductor Residential Indoor Wire for Outlets Switches Other Loads and Lighting Wiring Projects etc.**MOOKEERF**$229.25**24 rev1y ago](https://www.amazon.com/dp/B0FFSZVVG5)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Solid Indoor 6/3 Type NM-B Pure Copper Cable 50FT Black 6 AWG 3 Conductors with Ground Wire**energeaster**$206.55**4.5★**▲ 259%**](https://www.amazon.com/dp/B0G417D6BK) [**Solid Indoor 6/3 Type NM-B Pure Copper Cable 15FT Black 6 AWG 3 Conductors with Ground Wire**energeaster**$64.52**4.5★**▲ 258%**](https://www.amazon.com/dp/B0G42T4RMF) [**Solid Indoor 6/3 Type NM-B Pure Copper Cable 125FT Black 6 AWG 3 Conductors with Ground Wire**energeaster**$390.46**4.5★**▲ 258%**](https://www.amazon.com/dp/B0DZCCR7NH) [**Cable Cabana 6/3 UF-B Underground Feeder Electrical Cable with Ground**Cable Cabana**$52.41**4.6★**▲ 246%**](https://www.amazon.com/dp/B0BRQYMSWJ) [**6/3 Wire with Ground - 50FT NM-B 6 Gauge Non-Metallic Sheathed Cable 100% Pure Copper 6 AWG 3 Conductor Residential Indoor Wire for Outlets Switches Other Loads and Lighting Wiring Projects etc.**MOOKEERF**$229.25**4.6★**▲ 190%**](https://www.amazon.com/dp/B0FFSZVVG5)
**~~View all trending →~~**
## **What buyers say about 6/3 wire with ground**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Value For Money**34%
*“Great value”*
**Quality-Overall**21%
*“Excellent Quality”*
**Advertised Vs Actual Product**20%
*“As advertised”*
**Efficiency**5%
*“Works great”*
**Strength**3%
*“Good solid cable”*
**Locally Manufactured**2%
*“states that it is made in the USA”*
**Weight Heavy**2%
*“Heavy duty quality”*
**Flexibility**2%
*“Its flexible enough”*
**Material Quality**2%
*“Seems like quality wire inside of a very tough metal protective jacket”*
**Mounting**1%
*“This was perfect for installing a EV charger inside my garage”*
### **What buyers complain about **
**Stiffness**15%
*“Cable is very stiff as you would expect”*
**Flexibility**14%
*“it is true that working with this wire requires patience as it is not flexible”*
**Value For Money**12%
*“A very expensive item should be delivered properly near the door not close to the sidewalk”*
**Advertised Vs Actual Product**12%
*“All pictures show solid wire / I received stranded wire”*
**Material Quality**6%
*“the insulation plastic seemed super cheap on both the outer wire sheathing”*
**Weight Heavy**6%
*“very heavy”*
**Ease Of Use**4%
*“6-3 is not the easiest to work with”*
### **Top return reasons **
**Size-Overall**24%
**Advertised Vs Actual Product**20%
**Value For Money**15%
**Functionality-Overall**7%
**Certifications**5%
**Defective Material/Parts**4%
**Compatibility-Overall**3%
**Assembly/Installation**3%
**Charging**2%
**Stiffness**2%
## **Common questions**
- **Is 6/3 wire with ground profitable to sell on Amazon United States?**
- The niche generates $1.1M/yr across 25 tracked products. 3 of 4 products launched in the last 360 days are still selling. 90-day search growth is -7.0%. Flapen's verdict: Skip it (43/100).
- **How competitive is the 6/3 wire with ground niche?**
- 8 brands and 32 sellers compete. The top 5 products take 53% of clicks and top 5 brands hold 90% of demand.
- **What do buyers complain about in 6/3 wire with ground?**
- Top complaints mined from reviews: Stiffness, Flexibility, Value For Money. The return rate is 3.7%.
- **When does demand for 6/3 wire with ground peak?**
- Demand is steady year-round — the busiest month runs 1.2× the quietest.
- **What does it cost to enter the 6/3 wire with ground niche?**
- Listings span $44.06–$390.46; the average listing price is $164.66 (sweet spot $15–$100). The average incumbent carries 224 reviews — the moat a new listing must climb.
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