4 ms·
USB-C is limited to 48 VDC. Above about 50V, electrical safety codes apply.
by Animats 4mo ago
USB-C is limited to 48 VDC. Above about 50V, electrical safety codes apply.
- dotancohen 4mo agoYes, 240 watts is 5 ampres at that voltage - that's why I suspected that the cables get hot. I'm even surprised that a cable so thin is sufficiently insulated for 48 volts. I've seen 24 volt truck wiring arc out of dirty connectors.
- seba_dos1 4mo agoYou need a e-marked cable to get to 5A with any PD voltage, as a random crappy cable could get dangerously hot indeed. The limit is 3A and 20-21V otherwise.
- gsich 4mo agoYou sure? Those regulations go even higher. https://en.wikipedia.org/wiki/Extra-low_voltage https://en.wikipedia.org/wiki/Extra-low_voltage
- exmadscientist 4mo agoThe controlling standard is usually 62368, and the target is usually being a "Limited Power Source", which is 60V or less, and 100 VA max.