Why do charging cables not spark when held close to the intended device? 1.72K viewsJanuary 3, 2024 Question90.62K June 5, 2019 0 Comments close as in almost touching but not inserted. In: Engineering 7 Answers ActiveNewestOldest Anonymous Posted June 5, 2019 0 Comments To put some numbers on the good answers already posted: the breakdown voltage of air is about 3000 volts per millimeter. Even a 120-volt wall outlet can only throw a spark across an air gap about the thickness of a sheet of paper. You are viewing 1 out of 7 answers, click here to view all answers. Register or Login
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