![]() Underground Electrical SEC or Circuit Burial Depth References In the UK and other countries the required depth of electrical cables will vary from the above. Metal conduit carrying SEC - no less than 24 inches.Metal conduit carrying SEC - no less than 18 inches.Metal conduit carrying SEC - 4 inches under a 4-inch concrete slab.Metal conduit carrying SEC - at least 6 inches below soil top. ![]() Other electrical wire burial depths from Snohomish - cited below See NEC TABLE 310-13 - and this study guide NEC ARTICLE 310 WITH TABLES cited in detail below. For current ratings and wire types for underground SEC cables.from Snohomish County PUD 24" to 48" is the recommended depth for electrical SEC cable conduit. Source: Carmel CA's Building Safety Division, cited below.Burial depth: means below the surface of the soil some codes refer to this as the "required cover" or "required depth of soil cover" over the electrical conduit or cable or UF (Underground Feeder).Example: irrigation or landscape lighting circuits with UF or in a listed cable or raceway.Residential circuit must have GFCI protection and maximum overcurrent protection of 20A.Raceway must be listed for direct burial without concrete encasement.Residential branch circuits 120VAC or less Rigid metal conduit or intermediate metal conduit Typical Underground SEC or Electrical Wire Burial Depthĭirect Burial of SEC Cabling or Conductors Watch out: Your local electrical inspector is the final legal authority on the required depth at which to bury an electrical service entry cable, but here are some common depths: ![]() How deep below the ground surface or below a concrete slab, walk, or a driveway must we bury electrical service entry cabling? Underground Electrical Service Burial Depth Del Puerto Avenue, Suite B, 134, Patterson, CA 95363 Email: Web:, - retrieved 4, original source:
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