How Do You Run Electrical Power to a New Detached Garage in Michigan?

Running electrical power to a detached garage in Michigan requires careful planning, adherence to local building codes, and professional execution. Whether you’re looking to power tools, install lighting, or set up an EV charging station, here’s what you need to know:

Step 1: Determine Power Needs

Start by assessing your electrical requirements. Consider all current and potential future uses:

• Standard outlets for tools or appliances
• Lighting fixtures
• Heating or cooling systems
• Specialized equipment, like compressors or EV chargers

This step ensures the electrical service is adequately sized, preventing overloads or the need for costly upgrades later.

Step 2: Check Local Codes and Permits

Michigan has specific building and electrical codes that must be followed when extending electrical service to a detached structure. Contact your local building department to:

• Obtain necessary permits
• Understand zoning rules
• Verify setback requirements for underground wiring

Working with a licensed electrician can help navigate these regulations efficiently.

Step 3: Choose the Right Wiring Method

You have two main options for running power to a detached garage:

1. Overhead Wiring: This involves running wires from the main panel to the garage using utility poles or supports. It’s cost-effective but less aesthetically pleasing and may be unsuitable in areas prone to heavy snow or storms.
2. Underground Wiring: A safer and more visually appealing option. It requires digging a trench to lay conduit and cables, protecting them from weather and physical damage.

Step 4: Install a Subpanel (If Needed)

If your garage will have significant power demands, a subpanel might be necessary. This ensures proper circuit management and adds flexibility for future expansions. The subpanel should be connected to the main panel with appropriately sized conductors.

Step 5: Dig the Trench for Underground Wiring

When choosing underground wiring, follow these steps:

• Depth Requirements: Michigan typically requires trenches to be at least 18-24 inches deep to protect cables. Verify this with local codes.
• Conduit: Use PVC or metal conduit to shield the wiring. It should be rated for underground use and sized correctly for the wires you plan to install.

Step 6: Pull and Connect Wires

The wires must meet the amperage needs of your garage and comply with local electrical codes. The most common types include:

• THHN/THWN-2 wires: Ideal for underground use inside conduit.
• UF (Underground Feeder) cable: Can be buried without conduit in some cases but must still meet code requirements.

Step 7: Grounding and Bonding

Proper grounding is essential for safety. Your garage’s electrical system must include:

• Ground rods installed at the detached structure
• Ground wires connecting all metal boxes and outlets

Step 8: Inspection and Testing

Before powering the system, have your work inspected by the local building department to ensure compliance. Testing ensures all connections are secure and circuits function properly.

Professional Assistance

While some homeowners may be tempted to tackle this project themselves, hiring a licensed electrician is often the best route. Professionals ensure the work meets Michigan’s standards, minimizing risks and potential liability.

Running electrical power to a new detached garage in Michigan is an investment in functionality and property value. With careful planning, adherence to local codes, and quality installation, your garage will be ready to power your projects for years to come.

Need assistance with your home improvement projects? Contact Nvrrete for expert guidance and solutions tailored to Michigan homeowners.