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How to Install a Sub Panel for an Attached Garage

Planning and Installing a Garage Sub Panel: I want to add a panel to my attached garage, what size circuit breaker do I need?

Sub Panel in an Attached Garage
Electrical Question: I want to add a panel to my attached garage, what size breaker do I need?

This electrical question came from: Vince, a Homeowner in Longmont, Colorado.

Additional Comments: This is a great site for safe wiring advice.

Dave’s Reply:
Thanks for your electrical question Vince.

Installing a GarageĀ  Sub Panel

Application: Adding a Sub Panel to a Garage.
Skill Level: Intermediate to Advanced – Best performed by a Licensed Electrical Contractor, Panel work is Not Recommended for Homeowners.
Tools Required: Electricians pouch of hand tools and the various power tools necessary for installing the sub-panel.
Estimated Time: Depends on the type and size of the panel and available access to the project area.
Precaution: Any existing electrical wiring within the immediate area that may interfere with the installation of the sub panel should be identified and turned OFF and Tagged if necessary. Working in an electric panel is dangerous due to arc flash hazards and the possibility of electric shock.
Notice: Installing additional electrical wiring and a sub-panel should be done according to local and national electrical codes with a permit and be inspected.

Planning for a Garage Sub Panel

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Complete Guide to Home Electrical Wiring

Perfect for Homeowners, Students,
Handyman, Handy Women, and Electricians
Includes:
Wiring GFCI Outlets
Wiring Home Electric Circuits
120 Volt and 240 Volt Outlet Circuits
Wiring Light Switches
Wiring 3-Wire and 4-Wire Electric Range
Wiring 3-Wire and 4-Wire Dryer Cord and Dryer Outlet
How to Troubleshoot and Repair Electrical Wiring
Wiring Methods for Upgrading Electrical Wiring
NEC Codes for Home Electrical Wiring
....and much more.



Be Careful and Be Safe - Never Work on Energized Circuits!
Consult your Local Building Department about Permits and Inspections for all Electric Wiring Projects.

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