Retail center radial feeder distribution single line diagram
This feeder distribution single line diagram shows a retail center supplied from a 12.47 kV utility service through a 2000 kVA pad-mounted transformer. A 3000 A main breaker feeds a 480Y/277 V retail bus. Separate feeders supply a grocery tenant, restaurant tenant, central rooftop HVAC plant, and site lighting with signage.
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Scenario
This radial system distributes one transformer secondary to separately metered tenants and shared retail-center services.
Key decisions
- Service capacity: A 2000 kVA transformer feeds the 480Y/277 V retail bus.
- Tenant metering: Grocery and restaurant feeders have individual demand meters.
- Shared HVAC: A central 600 A feeder supplies rooftop HVAC equipment.
- Site services: Parking and signage are isolated on their own feeder.
When to reuse this
Use this for a small retail center with common-area services and tenant billing. Utility meter location and tenant-service requirements vary by jurisdiction.
Frequently asked questions
Why are tenant demand meters shown?
Are tenant meters always installed after the main bus?
Why is HVAC separate from tenant loads?
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