517.13

[gardiner]

I recently was asked this question in 517.13 (B) exception No. 2 ?Exception No. 2: Luminaires (light fixtures) more than 2.3 m (7? ft) above the floor and switches located outside of the patient vicinity shall not be required to be grounded by an insulated equipment grounding conductor.? What is considered outside the patient vicinity and what would be considered inside the patient vicinity?
Secondly this question is purely to satisfy my curiosity as I never have wired one is there a standard type of cable used for 277v switching in health care facilities and if so what is it?

[ June 26, 2003, 06:15 PM: Message edited by: gardiner ]

 

[websparky]

Re: 517.13

Hi gardiner,

The answer to your question lies in

NEC 2002 517.2 Definitions.
Patient Vicinity. In an area in which patients are normally cared for, the patient vicinity is the space with surfaces likely to be contacted by the patient or an attendant who can touch the patient. Typically in a patient room, this encloses a space within the room not less than 1.8 m (6 ft) beyond the perimeter of the bed in its nominal location, and extending vertically not less than 2.3 m (71/2 ft) above the floor.

Hope this helps,
Dave

 

[roger s deas]

Re: 517.13

Gardiner, along with Daves post.

Secondly this question is purely to satisfy my curiosity as I never have wired one is there a standard type of cable used for 277v switching in health care facilities and if so what is it?

Any acceptable wiring method in chapter 3 that would apply to your particular installation would be allowed, UNLESS these lighting circuits are on the emergency system then you would need to use a non flexible metalic method or type MI cable.

Even with this requirement, I haven't had a problem with inspectors allowing flexible (MC, AC, FMC) fixture whips on critical and life safety branches though.

Roger

[ June 26, 2003, 09:19 PM: Message edited by: roger s deas ]

 

[gardiner]

Re: 517.13

Thanks to both of you. Answered alot. With the switching of 277v again this is just curiousity trying to compare differences in our 347v switching in these locations, is there a colour code you use I know the NEC doesn't really cover it at least not that I found but is there a trade practise used in health care as to what colours are required in the cable?