Is anyone willing to explain Negative 48 Volts DC?
I'm trying to learn about it because we're using it for a few things at work (servers and switch equipment) and I'd like to better understand what we're working with than simply going through the motions that someone else dictates. Read: I want to understand and not simply rely on wrote memory.
I've learned that -48 VDC uses what is called "Positive Ground" and that what I'm used to is called "Negative Ground".
I'm trying to correlate and understand the typical red and black wires with them being ground / return / common / hot / etc.
I suspect that there is more to it than simply reversing the + and - lead from a battery or meter. But I can't wrap my head around it.
Can ~> will someone offer any comments that might help me understand better?