4 ms·
It is because it is not grounded. The leakage current then goes into the case. Unfortunately it seems to be quite difficult to buy grounded usb-c chargers. Mos
by JetSetWilly 4y ago
It is because it is not grounded. The leakage current then goes into the case.
Unfortunately it seems to be quite difficult to buy grounded usb-c chargers. Most of them seem to come with C7 cables with no ground.
- 323 4y agoGrounding doesn't make much sense for devices which are completely plastic encased. I get your point about "pass-through grounding" to the laptop, but then again, a lot of time the laptop is not connecting to a charging wire anyway.
- JetSetWilly 4y agoThe problem is - laptops used to have their own dedicated chargers. And generally speaking, they were grounded. Now we're moving to usb-c though, it means we've lost it being grounded. And many laptops are made of conductive materials so therefore it is an extremely minor annoyance and downside of usb-c. Also, I'm in the UK with its crap ring circuits packed with 240v/13amps. I'd rather have a ground when I'm one fault away from 3000 watts momentarily being delivered to my lap. Especially with these exciting new GaN chargers and their open circuit failure modes..
- 323 4y agoMy understanding is that all chargers, GaN or not, are required to use a transformer to electrically separate the primary (wall input) from the secondary (charger output). So a fault directly connecting you to the wall circuit should not be possible with an authentic charger.