Re:To Power the Future, Carmakers Flip on 48-Volt Systems
by klodolph on Sunday February 11, 2018 @12:39AM
(#16351368)
The 48 V DC "sweet spot" is mostly safety / regulatory. As soon as you get to 50 V, the safety requirements (NEC) change. You can hold on to bare conductors with a 48 V potential across them just fine, even though 120 V AC will kill you and make it hurt the entire time you are dying.
48 V devices can require connections that are inconvenient and large, depending on what you want to power with them. Try running an air conditioner off 48 V and measuring the peak current draw.
https://electronics.stackexchange.com/questions/267789/how-s...
Re:To Power the Future, Carmakers Flip on 48-Volt Systems
by MrBuddyCasino on Sunday February 11, 2018 @03:50AM
(#16351825)
> You can hold on to bare conductors with a 48 V potential across them just fine
Even with wet hands? I was under the assumption the unconditionally safe upper limit was around 24V.
Two things. One story. Cars are becoming like common rail deisel with a unified power model for systems integration and cars are becoming like locomotives which use electric traction for systems efficiency.