The HPC cluster rack currently has two UPSes, each with a maximum power capacity of 5000 Volt-Amps (Watts). The UPSes are APC brand, model number SRT5KRMXLT. They are online UPSes, which means they are continuously conditioning power, and there would be no delay in switching to battery if power were to fail, like with an offline UPS. One NEMA L6-30R 30A output from each UPS is connected to an APC PDU which runs on the side of the cluster rack. The entire cluster rack operates at 240V, not 120V.