General Electric load ctr. Unit substation: 12,000-480Y/277 volts; 1500 kva & indoor metal-clad switchgear; 12-kv; M-36. Alexander Boome, Skidmore, Owings & Merrill; F.N. Blum, GE Sales Engineer; W.E. Ottenstein, UAL engineer. United Air Lines Jet Service Center, San Francisco, CA. 680A8-SF-X2
General Electric Company