Articel 517

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Bill Annett

Bill Annett

Senior Member
Location
Wheeling, WV
Occupation
Retired ( 2020 ) City Electrical inspector
I came across an existing Dentist Office ( it started as a house ) where every room , including the Patient care area was wired with NM. Does anyone know what code cycle year, article 517.13 ( Grounding of Receptacles and fixed Electrical equipment in Patient care Areas ) was introduced into the NEC.

Thanks, Bill
 
Bill Annett said:
I came across an existing Dentist Office ( it started as a house ) where every room , including the Patient care area was wired with NM. Does anyone know what code cycle year, article 517.13 ( Grounding of Receptacles and fixed Electrical equipment in Patient care Areas ) was introduced into the NEC.

Thanks, Bill
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That would have been allowed in the 1987 Code (517-11, Ex #3.)

It was not allowed starting with the 1990 Code (517-13.)
 
David.

Thanks for the information. Would you happen to know where I could the the wording of that article, (517-11, Ex #3.)
from the 1987 NEC ?

Thanks Again, Bill
 
What's material is the date of the change in Occupancy Classification and the codes in effect on that date.
 
Bill Annett said:
David.

Thanks for the information. Would you happen to know where I could the the wording of that article, (517-11, Ex #3.)
from the 1987 NEC ?

Thanks Again, Bill
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517-11 - NEC 1987

517.11. Grounding of Receptacles and Fixed Electrical Equipment. In areas used for patient care, the grounding terminals of all receptacles and all noncurrent-carrying conductive surfaces of fixed electrical equipment likely to become energized that are subject to personal contact, operating at over 100 volts, shall be grounded by an insulated copper conductor. The grounding conductor shall be sized in accordance with Table 250.95 and installed in metal raceways with the branch-circuit conductors supplying these receptacles or fixed equipment.
Exception No. 1: Metal raceways are not required where Type MC cable, Type MI cable, or Type AC cable with an insulated grounding conductor is used.
Exception No. 2: Metal faceplates shall be permitted to be grounded by means of a metal mounting screw(s) securing the faceplate to a grounded outlet box or grounded wiring device.
Exception No. 3: An equipment grounding conductor enclosed in the sheath of a nonmetallic-sheathed cable assembly installed in accordance with the limitations of Sections 336-2, 336-3, and 336-4 shall be permitted to be used in accordance with Parts C and D of this article.
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Part C of Article 517 was "C. Clinics, Medical and Dental Offices, Outpatient Facilities, and Other Health Care Facilities Not Covered in Parts D and E."
 
Ngookin, I was told that the work was done in 1989. Currently the whole house and garage is the Doctors office, back in 1989 it may have been half house and half office, I just do not know.

David thanks again for all of the help, this is a great site.

Chances are that in 1989, the city was under the 1987 NEC or even the previous edition.


Thanks again Bill
 
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