Australian phantom users?

[magicera]

Ohms law I = V/R - 3000 / 240 = 12.5 amps


Sent from my iPhone using Tapatalk

Does that mean if I use a 10Amp cable I will only be getting 10A * 240 = 2400 Wattage (theoretically), despite the Silver phantoms able to produce sound as sleach says? 

Or does it not work this way?
Thank you for your help in advance, DSD  


My presumption is as long as the phantoms have enough power to turn on, the sound quality/loudness from a 10Amp vs 15Amp plug should be non-existant?

Thanks