On Saturday April 8th the building management of 151 Front had scheduled their annual electrical maintenance. An email was sent to you on Tuesday April 4th advising you of the non-service impacting electrical maintenance.

Details for Clients in Suite 709

At 9:57pm EST commercial power was cut and power went to UPS battery. The load did not automatically transfer to the generator so technicians on-site attempted UPS bypass. During bypass your power went down for less than one second.

At 10:07pm EST power reverted back to commercial power and the UPS came back online.

At 10:33pm EST we had to move off of commercial power due to the building’s scheduled maintenance and another attempt was made to move to the generator. The Technicians again attempted UPS bypass. Clients again went down for less then one second.

At 11:15 EST the problem was found in the hard wiring from the generator to the ATS. The generator had to be shut-down for the wiring to be corrected by the Master Electricians on-site.

At 11:20 EST the generator was turned off and clients lost power. The wiring was corrected.

At 11:23 EST All power restored. Clients stayed on generator power until Sunday April 9th at 8:19am when commercial power was restored.

Details for 802

At 9:57pm EST commercial power was cut and power went to UPS battery. The load did not automatically transfer to the generator and the load stayed on batteries until 10:07pm EST when the load was reverted back to commercial power.

At 10:33pm EST we had to move off of commercial power due to the building’s scheduled maintenance and another attempt was made to move to the generator. UPS held load on batteries again.

At 10:55pm EST while attempting to find the problem the batteries hit “n” voltage and the UPS went down.

At 11:00pm EST UPS was forced to bypass and power was supported by generator.

At 11:15 EST the problem was found in the hard wiring from the generator to the ATS. The generator had to be shut-down for the wiring to be corrected by the Master Electricians on-site.

At 11:20 EST the generator was turned off and power was lost to clients. The wiring was corrected.

At 11:23 EST All power restored. Clients stayed on generator power until Sunday April 9th at 8:19am when commercial power was restored.

The issue that caused the power failure was corrected and further tests will be done to ensure all systems are satisfactory. These tests will be non-service impacting.

You will be informed of all tests.