A Commercial Building has two separate services of different characteristics. One is 120/240V. single phase for power and lighting. The other is 230V. three phase, three wire for air conditioning load. Would it be NEC compliant to have one service located at opposite ends of building from each other. <B>The single phase service is existing</B>. The three phase service is new, to be used for HVAC equipment only. Lastly, the Electric Power Company directed the electrician to install the new service away from existing service. Approx. 50 ft.