I have to run some IP security cameras and a DVR to record the footage in a cabin ~600ft from my house, the setup is only during certain parts of the year. The cabin doesn’t have power and the DVR runs off 12V and supplies the 4 cameras with power via POE ports. I thought there would be too much lines loss in 600ft of Ethernet cable to power the system on 12V directly, and it would be too expensive to buy a 600ft extension chord to run 110V AC out. A solar setup would work but that would be too costly as the system draws about 5A on average so too many panels and batteries. I was thinking the best approach would be running power out to my cabin but wasn’t sure the best way to do that.
My thought for bring power out was to use Cat 5 waterproof Ethernet cable because it’s cheap and stepping up the voltage with a transformer from the outlet to a higher voltage which would reduce line loss, then stepping down the voltage at the cabin and rectifying it to 12V. I could combine all the wires in the Ethernet cable to get two twisted pairs to handle the current. Is there a reason this wouldn't work or a better way to do this? Are there specific names for these components like a "power transformer"?
My thought for bring power out was to use Cat 5 waterproof Ethernet cable because it’s cheap and stepping up the voltage with a transformer from the outlet to a higher voltage which would reduce line loss, then stepping down the voltage at the cabin and rectifying it to 12V. I could combine all the wires in the Ethernet cable to get two twisted pairs to handle the current. Is there a reason this wouldn't work or a better way to do this? Are there specific names for these components like a "power transformer"?