Electrical service for the 1455 Prime Data Center is provided from the local utility medium-voltage (MV) distribution pole. The utility MV feeder is routed underground via duct banks to the exterior mv sw then under the building and terminates at the interior medium-voltage switchgear located in a dedicated electrical room. All MV infrastructure is installed in accordance with utility requirements, NEC, IEEE standards, and local authority regulations, including grounding and bonding systems. The MV switchgear provides service entrance protection, metering, isolation, and distribution to downstream MV-to-LV transformers. Protective relays are fully coordinated with utility and downstream devices to ensure selective coordination and system reliability. The MV switchgear distributes power to multiple transformers sized for data hall IT loads, mechanical systems, office fit-out, and future capacity. Medium-voltage power is stepped down through transformers to low-voltage distribution, typically 480/277V, and routed to main distribution boards, mechanical switchboards, and emergency power equipment located in interior electrical rooms. The low-voltage distribution system supplies all critical and non-critical facility loads and includes metering, surge protection, and expansion provisions. Dedicated feeders from the low-voltage distribution system supply Power Distribution Units (PDUs) serving the 3rd-floor data hall. Feeders are routed through protected vertical risers and electrical pathways designed for redundancy and physical separation. PDUs distribute power to IT equipment at utilization voltages and are arranged to support dual power paths in accordance with data center reliability requirements. Electrical power is also distributed to all mechanical equipment, including chillers, pumps, CRAH/CRAC units, air handling equipment, cooling towers, and associated controls. Mechanical loads are supplied from dedicated mechanical switchboards and motor control centers, with critical cooling systems connected to emergency and generator-backed power. The office and support areas are supplied from normal power distribution panels serving lighting, receptacles, and office equipment. Life safety systems, emergency lighting, and required egress circuits are coordinated with both normal and emergency power systems. The facility includes on-site generators supplying emergency power through generator switchgear and automatic transfer switches (ATS). Generator feeders support critical IT loads, PDUs, essential mechanical equipment, and life safety systems to maintain continuous operation during utility outages. A comprehensive grounding and bonding system is provided throughout the facility, including MV and LV equipment grounding, data hall bonding grids, generator grounding, and utility grounding interfaces. The overall electrical system is designed to provide a reliable, scalable, and maintainable infrastructure supporting mission-critical data center operations.
Permit data sourced from the Dallas permit portal. Updated weekly.