On November 7, 2019 at 08:41, ericspencer said...
We use these hardened PoE switches from Trendnet TI-PG62. They are powered by a 48V DIN style power supply. Never ran 125' of 18/2 between the pwr supply and switch, but I think it would likely work.
+1
These switches also have a range of acceptable voltage supply, so should be more forgiving than your average switch. Calculate your drop and size appropriately.