12V Macerator Pump Power
It's a long story but I ended up with a NIB 12V macerator pump off Craigslist. I wanted 12V power by the sewer outlet for it and this is what I came up with: There was an unused 12V fused circuit o...
Forum Discussion
azchuckmo wrote:
I think most of those who commit the 12awg is too small need to google open air current rating of wire. it can handle 25 amps in open air NEC table 310-16.
There is more involved than the ampacity of the wire. There is a voltage drop that increases with the length of the cable and the current drawn. If the drop is too high the motor can't run at full speed and will draw too much current. That will increase the voltage drop and increase the current draw and so on and so on. Sort of a death spiral.
