BURIAL DEPTHS FOR YARD PIPIN6 AND ELECTRICAL LINES NOTES
SYMBOLS:
These burial depths apply outside of buildings within private property subject to the following provisions:
0 Conduit
I. Not applicable to utility companies gas and electric lines.
0 Pipe
2. May be laid in the same trench without horizontal separation except as noted for sewer and water lines.
Alternate Location
3. Does not apply to automatic sprinkler system lines beyond control valves.
Direct Burial Gable
OAS
ELECTRIC
SEINER
WATER
METAL
METAL (ABOVEGROUND)
METAL (UNCOATED) 0
6"
0
Grade
RIGID METAL CONDUIT 12"
0 METAL (COATED)
O
'S r \
O
lb" RIGID NONMETALLIC CONDUIT
NON-METALLIC NON-METALLIC (APPROVED INSIDE BLDG.)
NON-METALL IG
\\ AA X\ .\.\\ / /
METAL < (BELOW GRADE)
24" NON-METALLIC (NOT APPROVED INSIDE BLDG.)
DIRECT BURIAL CEC TABLE 300.5 Metal - Rigid conduit (coated) all minimum. Nonmetallic - Rigid conduit IS miniumum. Exception - Direct burial cable 24" minimum. (NEC Art. 300-5 Exceptions apply: i.e., b'' less depth for 2'' concrete pad over cable. Residential branch circuits rated 120 Volts or less with 6501 protection and maximum overcurrent protection of 20 amperes may be at 1211 .
CPC Sec. 1210.0 Metal -
CPC Sec. 720
Metal
(a) 6'1 above ground (uncoated and unwrapped). (b) 12 1 below ground (factory coated or machine wrapped). Nonmetalic - (PVC or PE) - I8" min. NOTE: Require approved plastic to metal transition fittings to rise above ground. Also, 18 OA. copper tracer wire required for non-metallic pipe.
No burial requirement (recommended I2" to protect from mechanical damage and freezing).
Nonmetallic (a) Pipe approved inside building - 12'' minimum. (b) Pipe approved inside building sewer to be 12'1 below water line with water pipe 12" to one side on a solid shelf - total depth 24'1 , and 12" apart horizontally minimum.
CPC Sec. 720 Metal At or above grade, or 12' minimum below grade. Nonmetallic 12" minimum (plastic).
2 - b802 Burial Depths for Yard Piping and Electrical Lines.pdf ...
May be laid in the same trench without horizontal separation except as noted for sewer ... Residential branch circuits rated 120 Volts ... horizontally minimum.
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