// CODE SNIPPET
E3607.3 Buildings or Structures Supplied by Feeder(s) or Branch Circuit(s)
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Buildings or structures supplied by
feeder(s) or branch circuit(s) shall have a grounding electrode
or grounding electrode system installed in accordance with
Section E3608. The grounding electrode conductor(s) shall
be connected in a manner specified in Section E3607.3.1 or,
for existing premises wiring systems only, Section
E3607.3.2. Where there is no existing grounding electrode,
the grounding electrode(s) required in Section E3608 shall be
installed. [250.32(A)]
Exception: A grounding electrode shall not be required
where only one branch circuit, including a multiwire
branch circuit, supplies the building or structure and the
branch circuit includes an equipment grounding conductor
for grounding the noncurrent-carrying parts of all equipment.
For the purposes of this section, a multiwire branch
circuit shall be considered as a single branch circuit.
[250.32(A) Exception]
An equipment
grounding conductor as described in Section E3908
shall be run with the supply conductors and connected to
the building or structure disconnecting means and to the
grounding electrode(s). The equipment grounding conductor
shall be used for grounding or bonding of equipment,
structures or frames required to be grounded or bonded.
The equipment grounding conductor shall be sized in
accordance with Section E3908.12. Any installed
grounded conductor shall not be connected to the equipment
grounding conductor or to the grounding electrode(s). [250.32(B) and Table 250.122]
For
installations made in compliance with previous editions of
this code that permitted such connection and where an
equipment grounding conductor is not run with the supply
conductors to the building or structure, there are no contin uous
metallic paths bonded to the grounding system in
both buildings or structures involved, and ground-fault
protection of equipment has not been installed on the supply
side of the feeder(s), the grounded conductor run with
the supply to the buildings or structure shall be connected
to the building or structure disconnecting means and to the
grounding electrode(s) and shall be used for grounding or
bonding of equipment, structures, or frames required to be
grounded or bonded. Where used for grounding in accordance
with this provision, the grounded conductor shall be
not smaller than the larger of:
- That required by Section E3704.3.
- That required by Section E3908.12. [250.32(B)(1) Exception]
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