Special m/c cable in dentist office?

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jlashell

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I know in hospitals you have to ues the green m/c cable. Do you have to use the green m/c in a dentist office and where does it tell you this in the code?
 
In the patient care areas, yes. Seems like they're calling that green cable HCFC, for healthcare flexible cable. It's just type AC cable with the addition of a ground wire, and they paint it green to make it easy to ID. Flip through article 517
 
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jlashell said:
where does it tell you this in the code?
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Welcome to the Forum.

517.13 Grounding of Receptacles and Fixed Electrical 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 an effective ground-fault current path by installation in a metal raceway system, or a cable having a metallic armor or sheath assembly. The metal raceway system, or metallic cable armor, or sheath assembly shall itself qualify as an equipment grounding conductor in accordance with 250.118.
(B) Insulated Equipment Grounding Conductor. The grounding terminals of all receptacles and all non?current-carrying conductive surfaces of fixed electrical equipment likely to become energized that are subject to personal contact, operating at over 100 volts, shall be connected to an insulated copper equipment grounding conductor. The equipment grounding conductor shall be sized in accordance with Table 250.122 and installed in metal raceways or as a part of listed cables having a metallic armor or sheath assembly with the branch-circuit conductors supplying these receptacles or fixed equipment.
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This is alink to a short article

http://ecmweb.com/nec/code_qa_052104/


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mdshunk said:
Heavy too. Get used to MC cable, then snatch up a roll of that stuff. Ugh.
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I think that's because AC cable is not made with the lightweight steel that the AFC "MC Tuff" brand is. MC Tuff is a favorite around here.
 
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