This protection shall extend from 18 inches below grade or the minimum cover distance, above, to the point of termination above ground. NEC 300-5 Conductors emerging from underground shall be installed in rigid metal conduit, intermediate metal conduit, or Schedule 80 rigid nonmetallic conduit to provide protection from physical damage. NEC 300-5 GFCI When a GFCI protected residential branch circuit is rated 20 amps or less and 120 volts or less, the minimum cover can be reduced to 12 inches. When wiring is installed at dwellings in approved non-metallic raceways, the minimum cover can be reduced to 18 inches. NEC 300-5 Generally, cables approved for direct burial shall have a minimum cover of 24 inches. Contact your local building authority for complete information. The codes shown are examples only and may not be current or accurate for your application or jurisdiction. UNDERSTANDING THE IMPORTANCE OF PROPER UNDERGROUND WIRINGĪll conductors of the same circuit, including grounded conductors, shall be contained in the same raceway, cable, or trench.
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