Skip to main content
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 (4 Pack)
TENINYU

TENINYU Grounded Adapter 3-Prong to 2-Prong Outlet Converter

Bottom line: The TENINYU Grounded Adapter 3-Prong to 2-Prong Outlet Converter: ETL listed with a 125V/15A, 1875W max rating printed on the body; main trade-off: grounding only works if the outlet box is actually bonded.

Check price on Amazon

As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →

Check price on Amazon → Compare to similar accessories

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

Pros & Cons

Pros

  • ✓ ETL listed with a 125V/15A, 1875W max rating printed on the body
  • ✓ 4 adapters per pack covers several outlets at once
  • ✓ Grounding tab and screw hole bond to the outlet cover plate
  • ✓ Handles space heaters and shop tools without an extension cord run

Cons

  • ✗ Grounding only works if the outlet box is actually bonded
  • ✗ 1875W ceiling rules out some large appliances and welders
  • ✗ No surge joule rating published, so it is not a surge protector
  • ✗ Single outlet per adapter, so it does not expand an outlet count

Manufacturer description

The TENINYU Grounded Adapter solves a problem every older home and workshop runs into: a three-prong plug and a two-slot wall outlet. This 4-pack of 3-prong to 2-prong converters plugs straight into an ungrounded receptacle and gives you a grounded-style three-prong socket, with a metal grounding tab and screw hole so you can bond the adapter to the outlet's cover plate screw. Electrically, each TENINYU adapter is ETL listed and rated 125V / 15A, with a 1875W maximum wattage ceiling — enough headroom for space heaters, shop vacuums, power tools, and appliance cords that would otherwise need…

Related Products

Other products in this category you may like:

SpecPicks Verdict

SpecPicks scored TENINYU Grounded Adapter 3-Prong to 2-Prong Outlet Converter using a rating × review-volume × price-fit model applied to published specs and reviews across the accessories category. TENINYU's accessories lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for accessories of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

Does this actually ground my appliance?

Only if the outlet box itself is grounded. The adapter provides a grounding tab and screw hole to bond to the cover plate screw; if the box has no ground path, the tab has nothing to connect to. Have an electrician verify the box.

What is the maximum wattage I can plug into it?

1875W. The adapter is ETL listed at a 125V / 15A electrical rating, so keep the combined load of anything you plug in under that ceiling.

How many adapters come in the package?

Four. The TENINYU listing ships as a 4-pack, so you can leave one at each two-prong outlet instead of moving a single adapter around.

Can I use it for a space heater or shop equipment?

Yes, as long as the unit draws under 1875W at 125V. TENINYU lists household, workshop, industrial, and machinery use, and the 15A rating covers most portable heaters and shop tools.

Key Features

  • FAST AND EASY- These grounding wall outlet adapters are incredibly fast and easy to use. Simply find the outlet of your choice and plug the adapter into the outlet.
  • CONVERT 2 PRONG OUTLETS- These adapters convert your ordinary 2 prong outlet into a three prong outlet so you can plug appliances and other things that require more power
  • SURGE PROTECTION- These grounding adapters allow you to plug in appliances that require more power without any worry and prevent electrical shorts and power surges.
  • ETL LISTED- 125v/15A/ Electrical Rating. 1875W Max wattage. Safe to use and safe on all types of outlets.
  • Adapter works best,Grounding converter,Plug in and connect grounding screw

Full Specifications

BrandTENINYU
ColorWhite
ModelTENINYU-4PACK-GND-ADP
Voltage125 volts
Amperage15 A
MaterialAcrylonitrile Butadiene Styrene (ABS)
Plug TypeType A
Unit Count4 Count
Part NumberHU-XI-201
Material TypeAcrylonitrile Butadiene Styrene (ABS)
Connector TypePlug-in
Number Of Wires2
Number of Items4
Number of Poles2
Specification MetEtl
Full listing titleTENINYU 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 (4 Pack)

Ready to buy?

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 (4 Pack) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Check price on Amazon →

Related Accessories

Keep exploring SpecPicks

Other buying guides

Browse the catalog

Editorial

More guides & deep dives from the SpecPicks archive

Browse all articles & guides →

More reviews from the SpecPicks archive

Browse all reviews →

Earliest SpecPicks reviews

Browse full archive →
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 (4 Pack)
View on Amazon →