What are you saying here? Have the electrical service or "drop" rewired? Are you suggesting that an additional circuit be added to the location? I've don't think I've ever seen a 33 or 66A breaker, not even as a molded case IEC type.. In the US, standard single pole breaker amperage's are: 15; 20; 30; 40; 50; 60; etc.
Curious......"other" does that mean licensed Electrician or unlicensed Electrician's helper, apprentice, journeyman or film industry "spark"?
I was calculating the draw of the lamp its self. Once on knows that one can then determine what circuit would handle such. For residential power and 4K, other than the 240V circuit for the dryer or other 'kitchen' appliances, there is typically no 'easily' already installed circuit and attendant plug available.
When dealing with any form of electricity I would only hire the services of a licensed electrician to make changes to the distribution box, put in new lines, etc.
So, when I estimate a draw of 66 Amps on startup, and 33 amps continuous, so that would suggest a line that is above 60 amps...
Do people get away with using things in places that may be 'underpowered' or not properly wired, sure... but in terms of safety, it's about the only place I'm 'conservative'.
Modern ballasts may be better on the peak draw. But older ones may not be so good. Older house wiring may not be up to either, even for the 240V lines.