[gmueckl]

Cat5 doesn't imply RJ45, so that confusion could be easily averted if people with brains developed that stuff. 2000w constant power transmission on a Cat5 sounds dubious, though. I don't know at what the voltage such a cable gives in and shorts wires. It would have to be pretty high to get the current to something the wire crossection can handle.

[jacquesm]

It's not the wattage that is going the be the problem, but either the high current or the high voltage (arcing).