Hatzel & Buehler completed the installation of two 3000A single ended substations, two 2000A static switches, four 750 KVA UPS modules, 168 dry stack cell batteries, four 1200A switchboards, eight RPP panels with 211 branch circuits, branch circuit monitoring and four redundant CRAC units in existing, occupied, three story data center. Hatzel & Buehler also furnished and installed lighting and fire alarm system upgrades.