Q. When installing a concealable nonmetallic extension from an existing 15A non-grounding receptacle outlet in an existing dwelling unit, where there is no equipment grounding conductor, is it permissible to install grounding-type receptacles as part of the nonmetallic extension?
- Under no condition is a grounding-type receptacle permitted, as there is no equipment grounding conductor or grounding provision in the existing circuit.
- Yes, if an AFCI receptacle is installed to protect all receptacle outlets on the branch circuit.
- Yes, however, the only method permitted is the use of GFCI receptacles.
- Yes, if grounded in accordance with 250.130(C), 406.3(D)(3)(b), or 406.3(D)(3)(c).
Where a concealable nonmetallic extension originates from a non-grounding-type receptacle, the installation shall comply with 250.130(C), 406.3(D)(3)(b), or 406.3(D)(3)(c). There are three choices. Two of the three require GFCI protection; 406.3(D)(3)(b) and 406.3(D)(3)(c). See 382.10(A).
Owen is the owner and president of National Code Seminars and the holder of master electrician certifications in 46 states. He can be reached at [email protected].