300.5: Minimum Burial Depth

Minimum cover requirements (inches) for direct burial, conduit, and other wiring methods.

Source: NEC 2020

Location	Direct Burial (in)	Rigid Metal (in)	PVC/Non-Metallic (in)
General (Not under slabs)	24	6	18
Under residential driveways	18	18	18
Under individual residential garage	18	18	18
Under public streets/alleys	24	24	24
In airport / heavy traffic areas	24	24	24

Professional Usage

This data is provided for informational purposes only. Always verify with the latest edition of the National Electrical Code (NFPA 70) and consult with a licensed electrical professional or AHJ (Authority Having Jurisdiction) before performing any electrical work.

Check Out More Tools

Conduit Bending Calculator

Get precise measurements for bending pipe around any obstacle.

Conduit Fill & Raceway Sizing Calculator

Instantly check if your wires will fit safely in a specific pipe size.

Junction Box Fill Calculator (NEC 314.16)

Ensure your junction boxes aren't over-filled and meet code.