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Detached Garage Sub Panel Wiring Diagram

Detached Garage Sub Panel Wiring Diagram

Running power to a detached garage turns it into a real shop for a table saw, a compressor, or a car charger, with no extension cords snaking across the yard. ArcSite's detached garage sub panel wiring diagram follows the feeder from the house service panel to the garage.

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Detached Garage Sub Panel Wiring Diagram

Key Features

This detached garage sub panel wiring diagram includes:

  • Service panel board in the single-family dwelling
  • Sub-panel board in the detached garage or shop
  • Type UF cable as the underground feeder
  • Two ungrounded conductors, a grounded conductor, and a grounding conductor
  • Grounding electrode at each building
  • Neutral bus bar isolated from the sub-panel cabinet

The garage sub-panel keeps its neutral bus bar off the cabinet and gives the ground its own bar, a split inspectors check on any feed to a separate building.

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Design tips

Key Considerations When Installing a Detached Garage Sub Panel

Separate buildings need their own grounding electrode, plus a neutral bar kept apart from the ground bar. With house, garage, and feeder route on one ArcSite page, you can show the trench and panel work up front.

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Frequently asked questions

Does this diagram show wire sizes?

Can I run the feeder in conduit instead of UF cable?

Can I quote the trench and the panel from one drawing?