Bid Title: Transit Operations Center Electrical System Upgrade
Category: Road and Bridge
Status: Closed
Bid Recipient: Curtis Garner, Transit Director


The Project includes, but limited to, the following Work:


  • Coordination with Xcel energy to determine transformer location and determine utility demand data.
    • Perform load calculations.
  • Coordinate with charging equipment manufacturer to calculate load calculations and coordinate equipment locations and feeders.
  • Perform electrical load calculations per NEC 220 to determine the maximum number of future charging stations at 800 amp service.
  • Develop one-line diagram of new service and related upgrades. One-line diagram to include distribution equipment, feeder, branch circuit panels and short circuit ground fault and voltage drop calculations.
  • Power floor-plans, as needed.
  • Issuance of design development coordination documents, if needed.
  • Issuance of signed and stamped schematic one-line diagram as required by Xcel Energy.
    • Assist with all filings and applications required by Xcel Energy.


  • Coordinate with Xcel energy installation of upgraded transformer capable of 800 amp, 480 volt 3-phase service.
  • Provide new service to accommodate new and existing equipment.
  • Re-feed existing distribution equipment via 208 volt step-down transformer.
  • Maintain continuity of power during transition.
  • Perform all required wiring upgrades to accommodate battery electric bus charging stations.
  • Installation of new electric panel(s) to accommodate increased electric throughput.
  • Install all wiring to connect panel(s) to electric bus charging stations.
  • Install all charging stations.

Perform or sub-contract any construction work necessary to complete the project.

Publication Date/Time:
6/7/2019 4:10 PM
Closing Date/Time:
7/19/2019 3:00 PM
Submittal Information:
Bid Opening Information:
Tuesday, July 23, 2019
Contact Person:
Curtis Garner, Transit Director
PO Box 2179
Frisco, CO 80443
Related Documents:

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