What is the minimum requirement for the power feeds to the building for a Rated-3 data center based on the ANSI/TIA-942 standard?

The minimum requirement for power feeds to a Rated-3 data center according to ANSI/TIA-942 is to

have two independent power feeds, which can come from two different substations provided by the

same power company. This ensures redundancy and concurrent maintainability, as each feed can

support the load independently during maintenance or failure of the other.

Detailed Explanation:

The separation by two substations ensures resilience in case of a localized outage or substation

maintenance, aligning with Rated-3 requirements for uninterrupted operation. ANSI/TIA-942 permits

these feeds from a single utility provider as long as they are supplied from distinct substations.

EPI Data Center Specialist Reference:

EPI underscores the importance of dual power feeds from separate substations for Rated-3 facilities,

highlighting that the ability to draw from different substations aligns with redundancy requirements

for high availability.