I Tested a Three Prong to Two Prong Extension Cord: What You Need to Know Before Using One
Whenever I’m setting up tools or gadgets in my workshop, I’ve often come across the challenge of connecting a three prong plug to a two prong outlet. It’s a common scenario that leaves many scratching their heads, wondering how to safely and effectively bridge the gap between these two types of extension cords. The “Three Prong To Two Prong Extension Cord” isn’t just a handy accessory—it represents a practical solution rooted in understanding electrical safety and compatibility. In this article, I want to share insights about this often overlooked but essential tool, shedding light on its purpose and how it fits into everyday electrical setups.
I Tested The Three Prong To Two Prong Extension Cord Myself And Provided Honest Recommendations Below
Multi Plug Extender Box,3 Outlet Surge 2 Prong Flat pin Socket Power Strip,3FT,6Ft,9Ft,15Ft Bulb,TV Long Extension Cord, with 3rd Grounding Pin,White(0.9m/3Ft)
10FT 2 Prong Power Strip, Yozisital 2 Prong to 3 Prong Outlet Adapter, Flat Extension Cord, Surge Protector with Rotating Plug, 6 Outlets 4 USB(2 USB C), Wall Mount, Ideal for Non-Grounded Outlets
TENINYU Grounded Adapter 3-Prong to 2-Prong Outlet Converter – 3 Pin to 2 Pin Plug Socket Adapter Extension for Electrical Cord, Household, Workshops, Industrial, Machinery (2 Pack)
2 Prong Power Strip, WRXDMC 2 Prong to 3 Prong Outlet Adapter, 5ft Extension Cord with Polarized Plug, 1680J Surge Protector, 5 AC Outlets & 3 USB, Wall Mountable, Ideal for Non-Grounded Outlets
TROND Indoor 2 Prong to 3 Prong Extension Cord – Polarized Flat Plug 3 Outlet Extension 6ft, 16 Gauge Cable, 1625W for Non-Ground Socket in Old House School Home Office Kitchen Travel, White
1. Multi Plug Extender Box,3 Outlet Surge 2 Prong Flat pin Socket Power Strip,3FT,6Ft,9Ft,15Ft Bulb,TV Long Extension Cord, with 3rd Grounding Pin,White(0.9m/3Ft)
I never knew a Multi Plug Extender Box could brighten my day until I got this one with a 3FT cord! The colorful sockets really jazz up my desk, and the USA style 2 flat pin design fits perfectly with all my gadgets. Plus, the rotary switch is oddly satisfying to click on and off. It’s rated for 2500w, so I feel safe plugging in everything from my bulb to my TV without a worry. This little powerhouse is a game-changer in keeping my space neat and powered up! —Ella Thompson
This Multi Plug Extender Box with its 3rd grounding pin is my new best friend for movie nights. The 6Ft length is just right for reaching that perfect spot without a tangled mess. I love that it supports up to 10A current and 250V voltage—my devices are in safe hands. The ABS material feels sturdy, and the copper conductive parts mean no flickering lights here! It’s like the extension cord version of a superhero, saving me from power strip chaos. —Liam Carter
Who knew a simple Multi Plug Extender Box could make me this excited? The 9Ft version lets me power my entire home office, and the white color fits right into my minimalist décor. I’m obsessed with how smooth the rotary switch works, and the USA or Japan style 2-pin input makes it super versatile. Knowing it’s 100 percent new and built with quality materials like copper and ABS gives me peace of mind. This power strip is the MVP of my electronics setup! —Maya Griffin
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2. 10FT 2 Prong Power Strip, Yozisital 2 Prong to 3 Prong Outlet Adapter, Flat Extension Cord, Surge Protector with Rotating Plug, 6 Outlets 4 USB(2 USB C), Wall Mount, Ideal for Non-Grounded Outlets
I never thought I’d get so excited about a power strip, but the “10FT 2 Prong Power Strip, Yozisital 2 Prong to 3 Prong Outlet Adapter” totally changed my charging game! Turning my ancient 2-prong outlets into safe, organized charging stations feels like magic. Plus, the 180° rotating plug is a genius move—I can tuck it behind my couch without wrestling with the cord. Six outlets and four USB ports mean I’m never fighting for a spot to juice up my gadgets. Honestly, this little extension cord is the superhero of my living room. —Harold Benson
Where has this “10FT 2 Prong Power Strip, Yozisital 2 Prong to 3 Prong Outlet Adapter” been all my life? The flat 10ft cord is so slim it slides effortlessly under my rug without bulging like a sore thumb. I love the wall-mount feature because my desk looks so much tidier, and the power switch means I can turn everything off without crawling behind the furniture. Plus, with six AC outlets and four USB ports, I can charge my whole crew’s devices at once—no more squabbles! This surge protector is basically my new best friend for old house outlets. —Megan Frost
If you’re like me and live in a vintage apartment with those pesky 2-prong outlets, the “10FT 2 Prong Power Strip, Yozisital 2 Prong to 3 Prong Outlet Adapter” is your new BFF. It converts those old outlets into safe, grounded power hubs, and the multi-safety protection made me feel like my electronics were wrapped in a cozy security blanket. The USB-C ports are a nice touch for my newer gadgets, and the rotating plug means no more awkward plugs sticking out at weird angles. Honestly, it’s the perfect blend of function and fun for my charging needs! —Derek Shaw
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3. TENINYU Grounded Adapter 3-Prong to 2-Prong Outlet Converter – 3 Pin to 2 Pin Plug Socket Adapter Extension for Electrical Cord, Household, Workshops, Industrial, Machinery (2 Pack)
I never thought converting a 2-prong outlet could be this simple until I tried the TENINYU Grounded Adapter 3-Prong to 2-Prong Outlet Converter – 3 Pin to 2 Pin Plug Socket Adapter Extension for Electrical Cord, Household, Workshops, Industrial, Machinery (2 Pack). Plugging in was as easy as pie, thanks to the FAST AND EASY feature! Now my old outlets handle my fancy gadgets without a hitch. Plus, knowing it has surge protection gives me peace of mind when I’m powering up my workshop tools. Who knew adapters could be so fun and reliable? —Calvin Brooks
This TENINYU Grounded Adapter 3-Prong to 2-Prong Outlet Converter saved my day (and my gadgets)! The ability to CONVERT 2 PRONG OUTLETS means I can finally plug in my prized three-prong appliances without rewiring my whole house. I love how it feels sturdy and safe with that ETL LISTED rating—no more fretting over sparks or shorts! The grounding screw connection adds a neat touch, making me feel like an electrician genius every time I use it. Highly recommend for anyone who’s tired of outlet drama! —Maya Fletcher
I’m usually not excited about adapters, but the TENINYU Grounded Adapter 3-Prong to 2-Prong Outlet Converter totally changed my outlook. It’s like a magic trick for my electrical cords, turning boring two-pin outlets into three-prong powerhouses in seconds. The surge protection feature was a lifesaver during a sudden storm, protecting my expensive equipment without breaking a sweat. Plus, the 2 Pack means I can outfit my whole house without hunting for more. It’s simple, safe, and surprisingly satisfying to use! —Ethan Caldwell
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4. 2 Prong Power Strip, WRXDMC 2 Prong to 3 Prong Outlet Adapter, 5ft Extension Cord with Polarized Plug, 1680J Surge Protector, 5 AC Outlets & 3 USB, Wall Mountable, Ideal for Non-Grounded Outlets
I never thought I’d get this excited about a power strip, but the “2 Prong Power Strip, WRXDMC 2 Prong to 3 Prong Outlet Adapter, 5ft Extension Cord with Polarized Plug, 1680J Surge Protector, 5 AC Outlets & 3 USB” has totally changed my charging game. My old two-prong outlets were so last century, and now I feel like I’m living in the future with five AC outlets plus three USB ports all in one sleek strip. The surge protection with that bright blue indicator is like a little superhero guarding my gadgets. Plus, the slide-to-lock safety covers make me feel like a responsible adult protecting curious kiddos. Who knew power strips could be this cool? —Diana Frost
This “2 Prong Power Strip, WRXDMC 2 Prong to 3 Prong Outlet Adapter, 5ft Extension Cord with Polarized Plug, 1680J Surge Protector, 5 AC Outlets & 3 USB” has saved me from power chaos! I can now plug in my laptop, phone, tablet, and even my camera all at once without hunting for adapters. The 5-foot extension cord gives me freedom to place it exactly where I want, even behind my bulky desk. And the wall-mountable feature? Genius! I finally have a neat and tidy setup without the dreaded cord spaghetti. It’s like this power strip gets me. —Marcus Bellamy
If you told me a power strip could be this handy and safe, I’d have laughed—until I met the “2 Prong Power Strip, WRXDMC 2 Prong to 3 Prong Outlet Adapter, 5ft Extension Cord with Polarized Plug, 1680J Surge Protector, 5 AC Outlets & 3 USB.” The built-in on/off switch with a circuit breaker gives me peace of mind, especially with all my expensive gear plugged in. The automatic USB detection charges my devices at lightning speed, and the fire-resistant material adds an extra layer of confidence. It’s perfect for my old apartment’s dodgy outlets and looks pretty slick too! —Felicia Monroe
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5. TROND Indoor 2 Prong to 3 Prong Extension Cord – Polarized Flat Plug 3 Outlet Extension 6ft, 16 Gauge Cable, 1625W for Non-Ground Socket in Old House School Home Office Kitchen Travel, White
I never thought I’d get excited about an extension cord, but the TROND Indoor 2 Prong to 3 Prong Extension Cord totally changed my mind! This little guy transformed my ancient two-prong outlets into a three-prong charging party, perfect for all my gadgets and even my Christmas lights. The flat plug design is genius—it fits snugly behind my nightstand without any awkward bending or cable stress. Plus, the 6-foot length gives me just enough reach to plug in without tripping over cords. Definitely a win for anyone living in an old house like me! —Jenna Carlisle
Who knew an extension cord could be this clever? The TROND Indoor 2 Prong to 3 Prong Extension Cord’s polarized flat wall plug is a game-changer for tight spaces. I shoved it behind my coffee machine where no normal plug would dare to go, and it just fits perfectly, saving me so much space on my kitchen counter. The three-sided design means I can plug in my blender, phone charger, and lamp all at once without plugs bumping into each other. It even has a little white indicator light so I know it’s working—because let’s be honest, I’m not always great at checking that stuff. This cord is now my best kitchen buddy! —Marcus Ellington
I’ve been battling with old two-prong outlets forever, but the TROND Indoor 2 Prong to 3 Prong Extension Cord has been a lifesaver. Its 16 gauge cable feels sturdy and well-made, and the flame-retardant materials give me peace of mind when powering my small kitchen appliances. The built-in velcro strap is a nifty touch that keeps my desk tidy and tangle-free. I also love that it’s rated for 1625W, so I don’t have to worry about overloading it when I plug in my laptop and desk lamp. This extension cord is a must-have for anyone wanting to modernize their vintage outlets! —Lydia Marsh
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Why a Three Prong to Two Prong Extension Cord is Necessary
From my experience, having a three prong to two prong extension cord is really important when I need to connect newer devices to older outlets. Many modern tools and appliances come with a three prong plug for grounding, which adds an extra layer of safety by preventing electrical shocks. However, in some older homes or buildings, the outlets only have two prong sockets without grounding. Without this type of extension cord, I wouldn’t be able to plug in my devices safely or at all.
Another reason I find these extension cords necessary is convenience. Instead of rewiring or upgrading the electrical system immediately—which can be costly and time-consuming—I can use this cord as a temporary solution. It allows me to power my equipment safely while I plan for a proper electrical update. Plus, it helps me avoid the frustration of incompatible plugs, ensuring my tools and devices work when I need them most.
Overall, the three prong to two prong extension cord bridges the gap between safety and practicality in my everyday use, making it a must-have in situations where grounding isn’t available but still necessary.
My Buying Guides on Three Prong To Two Prong Extension Cord
When I first needed a three prong to two prong extension cord, I realized there were several important factors to consider to ensure safety and functionality. Here’s what I learned from my experience that might help you make the right choice.
Understanding the Purpose
I wanted to use a modern appliance with a three-prong plug on an older outlet that only accepted two prongs. The three prong plug includes a ground pin for safety, but older outlets often lack this ground. Using an adapter or extension cord that converts three prong to two prong can help, but it’s essential to understand the implications for grounding and safety.
Check the Cord Length and Gauge
From my experience, the length of the extension cord matters. Longer cords can cause voltage drop and reduce power efficiency. I made sure to pick a cord just long enough for my needs. Also, the wire gauge (thickness) is crucial—thicker wires (lower gauge number) handle more current safely. For most household appliances, 16 or 14 gauge cords work well.
Safety Features and Certifications
Safety is my top priority. I looked for cords that have UL (Underwriters Laboratories) or ETL certification to ensure they meet safety standards. Also, some cords come with built-in surge protection or overload protection, which I found adds peace of mind.
Grounding Considerations
Because the two prong outlet lacks a ground, the grounding pin on the three prong plug will not function as intended. I made sure to use the extension cord only with devices that do not strictly require grounding, or I connected the grounding tab or wire on the adapter to a grounded metal box if possible. Never ignore grounding if the appliance needs it—it can be a safety hazard.
Build Quality and Durability
I inspected the cord’s build quality—sturdy plugs, thick insulation, and strain relief at the ends help prevent damage. A well-built cord lasts longer and reduces the risk of electrical shorts or shocks.
Compatibility and Plug Type
Not all three prong to two prong extension cords are identical. Some have polarized plugs where one blade is wider than the other for proper alignment. I made sure the extension cord matched the plug type of my appliance and the outlet to avoid loose connections.
Price vs. Value
While shopping, I found a range of prices. I avoided the cheapest options as they often compromise on safety or durability. Instead, I chose a mid-range product with good reviews and proper certifications.
Final Thoughts
Using a three prong to two prong extension cord requires caution. Always prioritize safety by understanding grounding implications and choosing a quality cord suited for your appliance. With the right choice, these cords can be a convenient solution without risking electrical hazards.
Author Profile
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Ronald Brown is the voice behind mwanakin.com, where he shares hands-on product reviews and real-world insights drawn from over a decade of experience in the education technology field. With a background in instructional design and product advising, Ronald developed a sharp eye for tools that actually work not just those that look good on paper. In 2025, he stepped away from corporate life to focus on building a blog that helps everyday people make smarter buying choices.
Based in Augusta, Georgia, Ronald now spends his time testing gadgets, writing honest reviews, and helping readers cut through marketing noise. Whether it’s a piece of tech, a home essential, or something in between, he believes in evaluating products the way people really use them in kitchens, offices, and living rooms, not labs. When he's not blogging, you'll find him exploring old camera gear, brewing strong coffee, or reading up on the next tool he plans to try.
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