mshields
Senior Member
- Location
- Boston, MA
Does anyone know when the NEC first started to require separate Life Safety Electric rooms. i.e. as opposed to mixing them in with normal panelboards?
Separate Life Safety Rooms
- Thread starter mshields
- Start date
- Status
- Location
- Windsor, CO NEC: 2023
- Occupation
- Hospital Master Electrician
To be clear, the two panelboards can be in the same room. I don't know when the requirement for raceway/box seperation came to be.
- Location
- Massachusetts
georgestolz said:
George I think he is talking the Life Safety branch at a hospital, not really Article 700 Emergency.
Don't quote me on this but, I believe it was 78.
They can be and have always been allowed in the same room as the other systems, it must be isolated from the other systems in conduits and enclosures with a few exceptions.
Roger
They can be and have always been allowed in the same room as the other systems, it must be isolated from the other systems in conduits and enclosures with a few exceptions.
Roger
Last edited:
mshields
Senior Member
- Location
- Boston, MA
I was referring to 700
I was referring to 700
but interested in relevant information on 517, critical. Be that as it may, what an interesting nuance I was unaware of; that the panels can be in the same room. It's just the feeder that needs to be rated.
So if you feed the LS panel with MI or some other rated feeder system, the LS panel can be essentially anywhere a "normal" panel can be?
thanks,
Mike
I was referring to 700
but interested in relevant information on 517, critical. Be that as it may, what an interesting nuance I was unaware of; that the panels can be in the same room. It's just the feeder that needs to be rated.
So if you feed the LS panel with MI or some other rated feeder system, the LS panel can be essentially anywhere a "normal" panel can be?
thanks,
Mike
Mike, below is an electrical closet in a large hospital with Normal Power, Critical, Life Safety, and Equipment branches all in one room
The conduit colors are identifying the systems. White is Normal, Blue is Critical, Yellow is Life Safety, and Green is Equipment.
The feeders are IMC for Normal and Equipment and RMC for Critical and Life Safety, this is in-house requirements for this particular hospital, EMT would be code compliant.
Roger
The conduit colors are identifying the systems. White is Normal, Blue is Critical, Yellow is Life Safety, and Green is Equipment.
The feeders are IMC for Normal and Equipment and RMC for Critical and Life Safety, this is in-house requirements for this particular hospital, EMT would be code compliant.
Roger
Designer69
Senior Member
than how do you meet the 2 hour fire rating reqm't if you don't have a separate room?
What are you gonna 2 hour rate the whole room in which the normal stuff is in also?
What are you gonna 2 hour rate the whole room in which the normal stuff is in also?
Designer69
Senior Member
it's in the Mass State Bldg Code.
also NEC mentions it except they require only 1 hr.
also NEC mentions it except they require only 1 hr.
- Status