you will use 5400 watts so you need a 30 amp 240 volt circuit
240v won't cut it for the hydro miners, you need 3 phases 380-415v (10A on each phase), depending on your country specs, for anyone who doesn't know what 3-phase wiring is, you can't just use three wires coming from the same phase and assume the miner will work, most houses will likely run on a single phase setup, so it won't be easy to supply 3 phase appliances,
Hmm, I don't get the part about the v here.
Speaking just for my area but in Europe, we've changed from 380v to 400v transmission before consumer so the phase is up from 220v to 230v but we are on 30A here so my 4000W oven has no trouble with it.
Isn't this more a thing of maximum kvA rather than voltage?