SP30s are a continuous load (they are expected to run for 3 hours or longer at a time at full load), which means that their loads have to be multiplied by 125% before comparing the load to the circuit ampacity.

125% * 2750W / 220V = 15.0 amps. There's a chance you might be able to put that on a 15 amp circuit without tripping any breakers, but you should be planning for the worst, not for the best. Typical circuit breakers will have a moderate to high chance of tripping if they are loaded at a continuous 80% of their rated capacity.

http://advanceelectricaltraining.com/advance-electrical-training/continuous-loads-decoded/

The 125% (or 80%) rule is all over the place in the National Electric Code. It's also how circuit breakers generally work. You can get away with loading circuits higher than that sometimes, but it's basically the electrician equivalent of overclocking. You shouldn't do it unless you have a back-up plan and don't care much about breaking laws and tripping breakers.