Section 406.3(D)(3) does not address the extension of existing two-wire circuits. Replacement receptacles rules are to increase the safety of older two-wire branch circuits where a replacement receptacle is desired. ![]() The panel rejects the concept of adding new receptacles to an existing two-wire circuit and applying the provisions for replacement receptacles rules. Therefore, this text does not apply to this section. This proposal addresses the installation of new receptacles. Section 406.3(D) addresses the installation of replacement receptacles. The elimination of extension cord use should carry nearly as much importance as EGCs in this environment. In many cases, these existing circuits are extended to add receptacles to conform with 210.52. By expressing explicit guidelines for additions to existing circuits, installers will be forbidden to connect an unbonded EGC between receptacles, decreasing the shock hazard in the event of an unbonded fault. ![]() Given the leniency put forth by this section regarding replacement receptacles, it appears that old 2-wire installations, while regrettable, do not present an imminent danger to occupants as stated in 80.5(B).Ĩ0.5(C) expresses that Additions.shall not cause a building to become unsafe. The section in question (406.3(D)) effectively bends the standard requirements for new installations to provide relief for the installer when dealing with old work. Receptacles installed to additions to existing branch circuits shall be considered replacements for the purpose of this section. Replacement of receptacles shall comply with 406.3(D)(1), (2), and (3) as applicable. This proposal was rejected.ġ8-16 Log #1396 NEC-P18 Final Action: Reject Here was a proposal in 2008 to allow the use of GFCI protection rule for ungrounded receptacle replacement for circuit extensions. This method is also permitted to ground a replacement 3-wire receptacle in the existing ungrounded box on the left, where no grounding conductor is available. The requirement in 250.68(C)(1) does not permit this separate EGC to be connected to the metal water piping of a building or structure beyond the first 5 feet of where the piping enters the building or structure unless the conditions of the exception to 250.68(C)(1) can be met. The branch circuit does not contain an equipment ground.Īn existing branch circuit is being extended for additional receptacle outlets.Īn EGC is connected from the receptacle grounding terminal to any accessible point on the grounding electrode system, to any accessible point on the grounding electrode conductor, to the grounded service conductor within the service equipment enclosure, to the equipment grounding terminal bar in the enclosure from which the circuit is supplied, or to an EGC that is part of another branch circuit that originates from the same enclosure where the branch circuit for the receptacle originates. This section permits a non-grounding-type receptacle to be replaced with a grounding-type receptacle under the following conditions: Section 250.130(C) applies to both ungrounded and grounded systems, but its most common application is for receptacle replacement of branch-circuit extensions in single-phase, 120-volt, 15- and 20-ampere branch circuits, which are required to be supplied by a grounded system per 250.20(B). When extending circuits we need to now upgrade to grounding. Well the answer to both of these questions is “NO”. ![]() Or, can you extend an ungrounded circuit without an equipment grounding conductor as long as you provide GFCI protection and mark it “GFCI Protected, No Equipment Ground”? So the question came up can you extend an ungrounded branch circuit without a grounding conductor? So how do we deal with this? What can I and what can’t I do to add new receptacles and extend branch circuits? Often in older homes (Pre-early 1960’s) we have ungrounded wiring systems and often fewer receptacles than what we are used to in more modern homes ( What is a Sufficient Number of Receptacles? A historical review ). Extending branch circuits off of ungrounded systems, 2 wire system no equipment ground.ĭealing with older wiring systems can be a bit tricky for new homeowners and those who live in these older homes.
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