I am working on a 12 unit building that is for assisted living. The building is classified as residential. Each unit will have either 2 or 3 PTAC units for heating and cooling. The PTAC units require a 240VAC 20A circuit. I can buy these breakers for ~$100 each. The 26 breakers for PTACs and the other living area breakers will cost the owner about ~$4,000. Does anyone know of something that I missed in the code or an alternative to buying the $2,600 worth of breakers. Thanks.