Emergency Electrical Room Required?

[distriser]

If all emergency loads are equipped with integral Unit Equipment or Storage Batteries for emergency power, is a separate Emergency Electrical Room required? What equipment would be in it?! NFPA 110 requires indoor Emergency Power Supply to be located in a separate room, but this seems to assume that the EPS is a generator set.

Relatedly, how is NEC 700.12 (F), which permits the use of Unit Equipment as an emergency illumination power source, reconciled with NFPA 110 5.1, which seems to limit Emergency Power Sources to petroleum/gas or electric utility?

 

[charlie b]

The batteries that provide the backup source to unit equipment do not meet the NFPA 110 definition of either "Emergency Power Supply" or "Emergency Power Supply System." So no, you don't need a separate room. I think this also serves as the answer to your second question.

 

[distriser]

Thanks

 

[steve66]

Battery systems would be covered by NFPA 111.

Location requirements are:

7.2 Location.
7.2.1* The SEPSS shall be located in a room(s) in accordance with the manufacturer's environmental specifications.

7.2.2 The rooms or buildings housing the SEPSS shall be located to minimize the possibility of damage from flooding, including flooding resulting from fire fighting, sewer water backup, and similar disasters or occurrences.

 

[iwire]

If all emergency loads are equipped with integral Unit Equipment or Storage Batteries for emergency power, is a separate Emergency Electrical Room required? What equipment would be in it?! NFPA 110 requires indoor Emergency Power Supply to be located in a separate room, but this seems to assume that the EPS is a generator set.

Relatedly, how is NEC 700.12 (F), which permits the use of Unit Equipment as an emergency illumination power source, reconciled with NFPA 110 5.1, which seems to limit Emergency Power Sources to petroleum/gas or electric utility?

You are in MA and we have amendments to Article 700.

Your inverters and emergency distrbution equipment must be in a 2 hour rated room.

 

[iwire]

That is a 2 hour room that does not have normal power distribution equipment.

 

[steve66]

You are in MA and we have amendments to Article 700.

Your inverters and emergency distrbution equipment must be in a 2 hour rated room.

Good catch. I never thought about there being a local amendment.

Ma seems to have their fair share of those.

 

[Pharon]

You are in MA and we have amendments to Article 700.

Your inverters and emergency distrbution equipment must be in a 2 hour rated room.

Not if it's a wall-mounted emergency light with integral battery -- that's what I think the OP is asking about.

 

[iwire]

Not if it's a wall-mounted emergency light with integral battery -- that's what I think the OP is asking about.

I agree.