University science laboratory distribution single line diagram
This university building single line diagram shows electrical distribution for a science laboratory. A 13.8 kV campus loop feeds a 2000 kVA transformer and 480Y/277 V laboratory switchboard. The normal bus supplies fume hood exhaust, a process chiller, and teaching laboratories. A 150 kVA UPS supplies a separate critical bus for analytical instruments.
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Scenario
This campus laboratory distribution system separates high-demand mechanical loads and teaching loads from UPS-backed analytical instruments.
Key decisions
- Campus connection: A 13.8 kV loop feeds a dedicated 2000 kVA laboratory transformer.
- Mechanical ventilation: Fume hood exhaust has a separate 400 A motor feeder.
- Process cooling: A 600 A feeder supplies the research chiller.
- Research continuity: A 150 kVA UPS feeds the instrument critical bus.
- Load separation: Teaching labs remain on a normal 300 A feeder.
When to reuse this
Use this for a research or teaching laboratory building. Hazardous-process controls, emergency power, and lab equipment loads require further study.
Frequently asked questions
Why are analytical instruments on a UPS bus?
Why is fume hood exhaust separate?
Does the UPS power the chiller?
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