Template · Multi-unit

Duplex with two-gang meter socket single line diagram

One service drop, two meters, a 100A panel per unit. Use this for a duplex, or a house with a second unit on its own meter: one service drop, a two-gang meter socket and a 100A panel 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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Duplex with two-gang meter socket single line diagram: one service drop, two meters, a 100A panel per unit. — Duplex with two-gang meter socket. 8 devices on an 11 × 17 in sheet with a title block and notes column.

What the reviewer checks on this drawing

The reviewer looks for a disconnect for each unit, grouped at the meters and labelled; that each occupant can reach their own; and unit panels wired as subpanels when the mains are outside.

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
Device	Two-gang meter socket (2-GANG)	200A per position	Service conductors, per utility
Meter	Meter A	Unit A
Circuit breaker	100A 2P	Unit A main
Panelboard	Unit A panel	100A
Meter	Meter B	Unit B
Circuit breaker	100A 2P	Unit B main
Panelboard	Unit B panel	100A

Notes on the sheet

Each unit main is a service disconnect, grouped at the meter location and labelled by unit.
Each occupant has ready access to their own disconnect.
Unit panels are subpanels where the main disconnect is outside.

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.