“Draw a university building single line diagram for a student residence with a 13.8 kV campus supply, 1500 kVA transformer, 480 V switchboard, 350 kW generator, life-safety ATS, student room, dining kitchen, laundry, fire alarm, and egress lighting feeders.”
Entenda as decisões por trás dele.
A 1500 kVA transformer feeds the residence switchboard from campus distribution.
Room panels, dining kitchen, and laundry have separate normal feeders.
A 350 kW generator connects through an 800 A life-safety ATS.
Fire alarm and egress lighting are supplied from the emergency bus.
Use this for a university residence hall with a life-safety generator. Add elevator, fire-pump, and occupancy-specific loads where required.
Dúvidas comuns
Why are fire alarm and egress lighting on the emergency bus?
They must remain available during a normal-source outage for occupant safety and evacuation.
Can the generator also serve room loads?
It can if designed for that duty, but this example reserves it for life-safety loads.
Why separate dining and laundry feeders?
Both are concentrated high-demand areas that are easier to size and maintain as independent feeders.