[NLRS] DC power to remote transveters

[W0ZQ at aol.com]

I am considering placing some transverters at the top of my tower to reduce  
feedline loss.   On transmit, the power requirement is about 250  watts, or 
say 20 to 25 amps at 12vdc.   I'm thinking about running low  voltage AC up the 
tower .... say 48 volts ? .... and then transform it down,  rectify & regulate 
to 13.8vdc at the top of the tower.   The  theory is that by running low 
voltage AC its safer and the current carrying  requirements for the wire going up 
the tower are reduced.   
 
Anyone done something like this ?    For those who remote  mount higher power 
transverters or amps, how are you getting DC power to them  ?
 
73, Jon
W0ZQ