Amazing what a little searching on Google can do.
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Submitter:
Mike Holt, Mike Holt Enterprises
Recommendation:
Delete Parenthetical 3
250.92 Services.
(A) Bonding of Services. The non?current-carrying metal parts of equipment
indicated in 250.92(A)(1), (A)(2), and (A)(3) shall be effectively bonded
together.
(1) The service raceways, cable trays, cablebus framework, auxiliary gutters,
or service cable armor or sheath except as permitted in 250.84.
(2) All service enclosures containing service conductors, including meter
fittings, boxes, or the like, interposed in the service raceway or armor.
(3) Any metallic raceway or armor enclosing a grounding electrode conductor
as specified in 250.64(B). Bonding shall apply at each end and to all
intervening raceways, boxes, and enclosures between the service equipment
and the grounding electrode.
Substantiation:
Parenthetical 3 is an unnecessary redundancy. The
requirement for bonding a metal enclosure for a grounding electrode is already
spelled out clearly in 250.64(E). This requirement is not only for service
equipment, which is the scope of 250.92, but also for separately derived
systems. Sections 250.104(D) and 250.30(A)(3) and 250.30(A)(4) do not repeat
the entire requirement of 250.64(C) like 250.92 does, because it is simply not
necessary. 250.92 should address service equipment only, not service
equipment and grounding electrode conductor enclosures. Also, article 100
defines Service Equipment as ?The necessary equipment, usually consisting of
a circuit breaker(s) or switch(es) and fuse(s) and their accessories, connected to
the load end of service conductors to a building or other structure, or an
otherwise designated area, and intended to constitute the main control and
cutoff of the supply.? An enclosure for a grounding electrode conductor does
not fall into this definition.
Panel Meeting Action: Accept
Panel Statement:
Editorially delete the reference to (A)(3) in the lead-in
sentence.
Number Eligible to Vote: 15
Ballot Results:
Affirmative: 15"
Mike put this proposal in and here it is.
I actually used this section as enforcement of 250.64(E). It is written more clearly than 250.64(E)
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