Challenging project including replacing part of a ISO-Gear transfer switch with two Russelectric transfer switches. At no time could this site be without power. EDC brought in its own portable generator to back-up critical rectifier and mechanical panels wile the team worked with Schneider electric to break apart and re-arrange sections of the gear. EDC created a temporary transfer circuit for backup from portable generator if utility where to fail during new ATS rigging and wiring. Project was finished in tight three week schedule with no disruptions to facility.