I’m so confused! Please bear with me. I’ve been googling since early this morning but nothing has really helped me.
So, I bought a new laptop with 7A-125v powercord (3 prong). Whenever we buy appliances with 3-prong plug, we use a 3-prong to 2-prong 10A-250V adapter. Our wall sockets are 2-prong 16A-250V
But again, the powercord of the laptop is 7A-125V.
Is it ok to use the adapter? Please explain why or why not thanks!
IMAGES
Here’s the end of the powercord (It’s a Longwell brand E55349, LP-31M 7A-125V)
Here’s the socket adapter so I can plug it in our wall’s 2-prong 250V socket.
Here’s the power adapter, texts are super small and color gray (INPUT: 100-240V 50-60Hz. OUTPUT: 19.5V = 2.31A 45 W)
ADDITIONAL INFO: Laptop is HP notebook 15 f387wm
101 Answer
As shown in your pictures, the "125V 7A" rating you found is molded onto the plug (the thing at the end of the cord with the two flat prongs and one round prong), and tha rating only applies to the plug. That is a "NEMA 5-15" plug (North American common grounded type) and no such plug is rated for more than 125 volts. It can't be, per the type specification.
But what really matters is the input voltage rating on the laptop's "power adapter". (Sometimes called the "AC adapter" or "charger".)
Your power adapter has an input voltage rating of 100 to 250 volts, so it is fine to use with your 240 V supply.
Your cordset will have no problem conducting your 240 volts to the power adapter. The fact that the plug says "125 V" is nearly irrelevant. That is a UL-approved NEMA-5 cordset and as such it has actually been tested to far higher voltages than that. (This answer of mine to a similar question has more details.)
Reality is that probably millions of travelers from North America plug their laptops into 220 to 240 volt power outlets all around the world, using cordsets exactly like yours with "125V" plugs, and using a socket adapter to adapt to the sockets in the walls wherever they are... and they don't have a problem. You won't either.
