Detached Garage Sub-Panel Setup | Knoxville Electrical Service Guide

Here’s what to know. This guide explains the type of work and why it can be needed. It is not a remote diagnosis or a do-it-yourself wiring tutorial.

What does this involve?

Running a sub-feed run from the main home out to a workshop outbuilding to handle tool loads.

How does it work?

A detached garage subpanel can support several circuits for tools and lighting. It still needs a properly sized feeder and safe outdoor connection to the main system.

What affects the job?

Garage distance, anticipated loads, trenching, and permits shape the work. Panel space alone is not proof the main service can support it.

What should you tell us?

The equipment model, where it is outdoors or near water, and any permit or site details you already have. Keep clear of damaged electrical equipment. You do not need to know the electrical terms. Tell us what you see and what you want to change.

Important: This topic may require permits, a specialty license, utility coordination, or equipment we do not always carry. We will confirm whether we can take on the work before booking. We do not give an installation method or code compliance decision based on a web article.

Electrical safety: Do not take apart switches, outlets, panels, wiring, or equipment based on online advice. If you notice heat, sparks, smoke, or a burning smell, stop using the affected equipment and contact a qualified electrician. For immediate danger or fire, call 911.

Keep safety in mind

The U.S. Consumer Product Safety Commission’s home electrical checklist explains common warning signs. For generator-related jobs, see the Electrical Safety Foundation International’s generator guidance. Any code or permit decision needs to be checked for the actual property.

Is this what you need help with?

Tell us a little about your project and where you're located. We'll confirm whether it's a job we can take on and explain the next step.

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