Depends on what power setting you run it on Ocean, at full whack on 240v it'll draw something like 90 amps or so but what are the chances of you running it flat-out? Malcolm runs his on a 40A or 50A breaker I believe but he has no need for all the power it can produce.
You did not say if it is the 180,200,250,300 or 500A model.
the 250 is spec'ed at 117A at 240V.
My Airco is similar, 108A at 220. For my use, I run fine on a 50A breaker. It is a 300A beast (475 max). I have used it up to 200+ amps with no problems.
Others here have run Syncrowaves and Dialarcs on a 32A circuit.