The backup generator is connected separately to an EM transfer switch/panel and a Standby transfer switch/panel. The generator is 250KW and the connected load is 241Va. The standby panel powers elevators, lights, machine rooms, pumps, some common area electrical outlets. Some residents would like to wire personal use outlets in their garage space in the shared common area garage under the building. The most convenient circuits to tap these outlet are on the standby power panel. Is it permissible to wire personal use outlets in a building common area to a circuit that is supported by the backup generator?