Mixing Emergency and Normal Power

[Nick]

'99 NEC
Article 700-9(b) "Wiring shall be kept entirely independent of other wiring and equipment."
In everyone?s opinion in a situation where there is a normal power and emergency power switch shown in the same box, would a barrier in the box comply with this section or would the two switches need to be in separate boxes?

 

[bennie]

Re: Mixing Emergency and Normal Power

The two places permitted for both systems to be in the same enclosure is the transfer switch and the emergency lighting. I don't know if this has been changed or not.

 

[roger]

Re: Mixing Emergency and Normal Power

Nick, yes, a barrier would comply, look at 370-28(d).

Roger

[ July 26, 2003, 11:26 AM: Message edited by: roger ]

 

[Nick]

Re: Mixing Emergency and Normal Power

Thanks Roger,
That is what I needed.