double pronged outlets, how come they are never plugged in wrong?

Question

So in England we have the ground prong so our cables are all the same, however I know in the states and other places they don’t, so how come no damage is caused if the positive and negative are the wrong way around?

In: 22

Answer 1

For some devices, it doesn’t matter. For others, it’s does and those plugs will either have one larger prong, a ground prong, or both.

Outlets in the US definitely have a ground prong in the outlet and a larger side vs a smaller side and have since like the 70s. Only old houses/outlets in the US have 2.