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SERVICE GROUNDING DETAIL
NOT TO SCALE.
GRD
INCOMING
SERVICE
NEUTRAL BAR
WATER PIPE.
GROUNDING ELECTRODE
CONDUCTOR.
3/4" X 10'-0" COPPER CLAD
GROUND RODS.
MAIN GROUND BUS (MGB)
IN ELECTRICAL ROOM.
SIZE PER NEC
250.122
A SINGLE ELECTRODE THAT DOES NOT
HAVE A RESISTANCE TO GRD OF
LESS THAN 25 OHMS SHALL BE AUGMENTED
BY ADDITIONAL ELECTRODE(S) AS
SPECIFIED IN NEC:
250.52 (A)(4)
250.52 (A)(5)
250.52 (A)(6)
250.52 (A)(7)
TYP BRANCH PANEL
TELE
BOARD
#6 Cu.
MAIN BONDING JUMPER
EQUIPMENT BONDING JUMPER
PER TABLE 250.122
WATER METER JUMPER.
CONCRETE ENCASED
ELECTRODE PER 250.52(A)(3)
NON-METALLIC PROTECTIVE
SLEEVE
CONNECTION LISTED
FOR PURPOSE
WM
MDP
ELECTRODE PER 250.52(A)(1)
ELECTRODE PER 250.52(A)(2)
GROUNDING ELECTRODE
CONDUCTOR.
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