so the backup generator was running for 45 minutes, correct. that time is what the electricians programed the Generator to excersize during a test cycle. It is fully adjustable. The actual switch time to go from Normal to EM and then back to Normal is the amount of time to get to the nearest floor and park with the doors open. This time is the power change pending signal or the pre signal, it is usually 15 or 20 seconds.
