Template · Multi-unit

Fourplex with meter stack single line diagram

A 400A four-position meter stack with a main breaker and a feeder for each unit.

A free template with typical ratings, conductor callouts and general notes. Open it, change what differs on your job, fill in the title block and export a PDF.

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Fourplex with meter stack single line diagram: A 400A four-position meter stack with a main breaker and a feeder for each unit. — Fourplex with meter stack. 10 devices on an 11 × 17 in sheet with a title block and notes column.

What the drawing shows

Every device on the sheet, in the order power reaches it.

Symbol	Label	Rating or detail	Conductors feeding it
Utility source	Utility service	120/240V 1φ 3W
Meter stack	Meter stack	400A bus · 4 × 125A, NEMA 3R	Service conductors, per utility
Circuit breaker	100A 2P	Unit 1 main
Panelboard	Unit 1 panel	100A	3 #3 Cu + #8 G
Circuit breaker	100A 2P	Unit 2 main
Panelboard	Unit 2 panel	100A	3 #3 Cu + #8 G
Circuit breaker	100A 2P	Unit 3 main
Panelboard	Unit 3 panel	100A	3 #3 Cu + #8 G
Circuit breaker	100A 2P	Unit 4 main
Panelboard	Unit 4 panel	100A	3 #3 Cu + #8 G

Notes on the sheet

Each unit main is a service disconnect. The four are grouped at the meter stack and labelled by unit.
Service size from a multi-family load calculation with demand factors. Four 100A units on a 400A stack is typical, not calculated.
Unit panels are subpanels: four-wire feeders, neutrals isolated from the enclosures.
Meter stack short-circuit rating to equal or exceed the available fault current.

Diagram is schematic and not to scale. Field-verify existing equipment ratings. Ratings and conductor sizes shown are typical. Confirm against the adopted code, the equipment listing and a load calculation before installation. Code references are to the 2023 NEC and the 2024 Canadian Electrical Code: see references and editions.