I would like your opinion concerning the use of isolated ground in a school health or nurses office and first aid room. This seems to be a gray area, but I don't think one is required here. The code deals with health care, but the are is more like a first aid center than a health care area. What do you say? Thanks for the information and opinions.
School Health(Nurse) Office/Isolated Grd.
- Thread starter jackvis
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Re: School Health(Nurse) Office/Isolated Grd.
Look at 517.19(E) for the Isolated Power System requirement.
The requirement for Isolated Power Systems is a Local, Facility, Or State issue.
In any case the area you are talking about does not come under any section of 517.
Roger
Look at 517.19(E) for the Isolated Power System requirement.
The requirement for Isolated Power Systems is a Local, Facility, Or State issue.
In any case the area you are talking about does not come under any section of 517.
Roger
Re: School Health(Nurse) Office/Isolated Grd.
Are you perhaps confusing isolated ground branch circuits with the redundant grounding of circuits serving patient care areas of health care facilities.
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Tom Horne
517.13 Grounding of Receptacles and Fixed Electric Equipment in Patient Care Areas.
Wiring in patient care areas shall comply with 517.13(A) and (B).
(A) Wiring Methods. All branch circuits serving patient care areas shall be provided with a ground path for fault current by installation in a metal raceway system, or a cable armor or sheath assembly. The metal raceway system, or cable armor, or sheath assembly, shall itself qualify as an equipment grounding return path in accordance with 250.118. Type AC, Type MC, Type MI cables shall have an outer metal armor or sheath that is identified as an acceptable grounding return path.
(B) Insulated Equipment Grounding Conductor. In an area used for patient care, the grounding terminals of all receptacles and all non?current-carrying conductive surfaces of fixed electric 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 250.122 and installed in metal raceways or metal-clad cables with the branch-circuit conductors supplying these receptacles or fixed equipment.
Are you perhaps confusing isolated ground branch circuits with the redundant grounding of circuits serving patient care areas of health care facilities.
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Tom Horne
517.13 Grounding of Receptacles and Fixed Electric Equipment in Patient Care Areas.
Wiring in patient care areas shall comply with 517.13(A) and (B).
(A) Wiring Methods. All branch circuits serving patient care areas shall be provided with a ground path for fault current by installation in a metal raceway system, or a cable armor or sheath assembly. The metal raceway system, or cable armor, or sheath assembly, shall itself qualify as an equipment grounding return path in accordance with 250.118. Type AC, Type MC, Type MI cables shall have an outer metal armor or sheath that is identified as an acceptable grounding return path.
(B) Insulated Equipment Grounding Conductor. In an area used for patient care, the grounding terminals of all receptacles and all non?current-carrying conductive surfaces of fixed electric 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 250.122 and installed in metal raceways or metal-clad cables with the branch-circuit conductors supplying these receptacles or fixed equipment.
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