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How to Install an Underground Electric Service

By Dave Rongey - Summary:

How to Install an Underground Electrical Service: I want to run an underground electric service from the outside breaker box.

Planning for an Underground Electric Service

Electrical Question: I want to run an underground electric service  from the outside breaker box.

  • The service will be to run fans, lighting and misc. appliances as necessary.
  • Do I need to pub the wire in conduit or is there a type of wire I can use for under grounding that does not require conduit?
  • How heavy should the circuit breaker be for this use?


This electrical wiring question came from: Ed, from Hawthorne, Florida.

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

Installing an Underground Electrical Service

underground electrical

Application: Installing a Main Electric Service Panel.
Skill Level: Advanced – Licensed Electrical Contractor – Not Recommended for Homeowners.
Tools Required: Electricians pouch of hand tools and the various power tools necessary for the specific method of electrical service installation.
Estimated Time: Depends on the type of panel, the location, and available access to the project area.
Precaution: This is an extensive project. Working in an electric panel has possible arc flash hazards and should be performed by a Licensed Electrical Contractor.
Notice: Installing an Electrical Service Panel should be done according to local and national electrical codes with a permit and be inspected.

How to Install an Underground Electric Service

Install Electric Service

Planning to Install an Underground Electrical Service

UF Type cable is approved for direct burial when installed to applicable electrical codes.

  • The size of the electrical service must be sized according to the exact connected load for all the devices and then factored.
  • The size of the electrical service cables will depend on the over all length to the service and the type of connected electrical loads.

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

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