SECTION: 26 23 00.00 40 SWITCHBOARDS AND SWITCHGEAR
 
Criteria

  1. UFGS SECTION 26 23 00.00 40 SWITCHBOARDS AND SWITCHGEAR
  2. JBLM 26 23 00.00 40 - Switchboards and Switchgear
Changes or Criteria Notes to Unified Facilities Guide Specifications (UFGS)
Paragraph # and Title (if any) Note to Designer Change Text
     
 
 Design Requirements
  1. Do not use set-screw type conduit fittings on any type EMT conduit.  Install only compression fittings with EMT.
  2. Provide Arc Flash Study and install PPE level label on each switchboard and switchgear.
  3. Install #4/0 BC for all grounding system for switchboard and switchgear.
  4. No shared neutrals between circuits.
  5. Neutral conductors shall not be derated, they shall be of the same size and quantity as phase conductors.
Notes to Designers on Drawing Content
  1. Indicate available fault currents  of 14,000 AIC minimum for 120/208V and 120/240V panelboards and 22,000 AIC minimum for 277/480V panelboards on power riser diagram.
  2. Provide "Connected and Demand Load Summary Schedule" on Power Riser Diagram Drawing.

 
Standard Details
Only the DPW AHJ and/or electrical inspectors as appointees by the AHJ can override the design standards and codes.
 
Applicable Points of Contact
For all electrical inspections coordinate with:
Mr. Dwayne M. Lee
Senior Construction Control Representative/SCCR
CIB/ESD, Directorate of Public Works
Joint Base Lewis-McChord,WA 98433
Govt. Work Cell: (253)219-8969
Email: dwayne.m.lee.civ@army.mil
Design Standards