How wattage/amp ratings work when plugging things into power strip/surge protector?

1.21K views

I just don’t get it. Only a handful of devices would put you over the 15A limit right?

In: 1

7 Answers

Anonymous 0 Comments

15A is a lot at 120 or 240VAC. For 120VAC, that’s 1800W.

Most things we plug in are DC. For DC, W = A * V. Your phone probably charges around 5V 3A, which is 15W. You could plug over 100 times that into a 15A power strip.

When going between AC and DC, the wattage will be the same, or close enough considering losses from heating during the conversion.

You are viewing 1 out of 7 answers, click here to view all answers.