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// CODE SNIPPET

E4203.7 Underground Wiring

2014 FBC - Residential, 5th edition > 42 Swimming Pools [Electrical Provisions] > E4203 Equipment Location and Clearances > E4203.7 Underground Wiring
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Underground wiring shall not be installed under or within the area extending 5 feet (1524 mm) horizontally from the inside walls of pools and outdoor hot tubs and spas except where the wiring is installed to supply pool, spa or hot tub equipment or where space limitations prevent wiring from being routed 5 feet (1524 mm) or more horizontally from the inside walls. Where installed within 5 feet (1524 mm) of the inside walls, the wiring method shall be a complete raceway system of rigid metal conduit, intermediate metal conduit or a nonmetallic raceway system. Metal conduit shall be corrosion resistant and suitable for the location. The minimum cover depth shall be in accordance with Table E4203.7.

TABLE E4203.7
MINIMUM BURIAL DEPTHS

WIRING METHODUNDERGROUND WIRING (inches)
Rigid metal conduit6
Intermediate metal conduit 6
Nonmetallic raceways listed for direct burial and under concrete exterior slab not less than 4 inches in thickness and extending not less than 6 inches (162 mm) beyond the underground installation6
Nonmetallic raceways listed for direct burial without concrete encasement18
Other approved racewaysa18
For SI: 1 inch = 25.4 mm.
a. Raceways approved for burial only where concrete-encased shall require a concrete envelope not less than 2 inches in thickness.

Related Code Sections


E4203.7 Swimming Pools [Electrical Provisions], Underground Wiring
Underground wiring shall not be installed under or within the area extending 5 feet (1524 mm) horizontally from the inside walls of pools and outdoor ...
2014 FBC - Residential, 5th edition > 42 Swimming Pools [Electrical Provisions] > E4203 Equipment Location and Clearances > E4203.7 Underground Wiring
E4203.7 Swimming Pools [Electrical Provisions], Underground Wiring
Underground wiring shall not be installed under or within the area extending 5 feet (1524 mm) horizontally from the inside walls of pools and outdoor ...
2017 FBC - Residential, 6th edition > 42 Swimming Pools [Electrical Provisions] > E4203 Equipment Location and Clearances > E4203.7 Underground Wiring
E3803.10 Wiring Methods, Wet Locations
The interior of enclosures or raceways installed underground shall be considered to be a wet location. Insulated conductors and cables installed ...
2014 FBC - Residential, 5th edition > 38 Wiring Methods > E3803 Underground Installation Requirements > E3803.10 Wet Locations
E3803.10 Wiring Methods, Wet Locations
The interior of enclosures or raceways installed underground shall be considered to be a wet location. Insulated conductors and cables installed ...
2017 FBC - Residential, 6th edition > 38 Wiring Methods > E3803 Underground Installation Requirements > E3803.10 Wet Locations
E3803.2 Wiring Methods, Warning Ribbon
Underground service conductors that are not encased in concrete and that are buried 18 inches (457 mm) or more below grade shall have their location ...
2014 FBC - Residential, 5th edition > 38 Wiring Methods > E3803 Underground Installation Requirements > E3803.2 Warning Ribbon
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