Location: San Diego, CA Owner: San Diego Airport Authority General Contractor: Helix Electric, Inc. Summary: Construction includes upgrading and modifying the airport's primary 12 kV service and distribution systems. The upgrade includes the construction of a new standalone concrete switchgear building containing the airport's two new main 12 kV 200A service switchgear, airport wide 12 kV ductbank systems and exposed raceways, extending electrical service to terminals T2W, T2E, T1 and the central utilities plant.