Emergency Systems

[DMG_1]

Hello.

I have a question regarding emergency systems as defined in NEC Article 700. I know that emergency and normal power circuits cannot be installed in the same conduit. What about emergency and normal power panelboards, can they be located in the same room? If not where in the NEC is this stated?


Thanks

 

[raider1]

Yes emergency panels and normal power panels are permitted to be located in the same room. This is a very common installation practice.

Chris

 

[iwire]

Hello.

I have a question regarding emergency systems as defined in NEC Article 700. I know that emergency and normal power circuits cannot be installed in the same conduit. What about emergency and normal power panelboards, can they be located in the same room? If not where in the NEC is this stated?


Thanks

You are from MA so the answer is no you cannot put emergency distribution equipment in the same room as non emergency equipment if the work is being done in MA

It is in the MA amendments

When I get home I can post it.

This becomes an issue with prefabed elelectric rooms often or out of state designer

 

[DMG_1]

iwire. If you could post it that would be great. I am looking in the Mass Amendments under Article 700 and I do not see anything indicating that there needs to be separation. Thanks.

 

[iwire]

iwire. If you could post it that would be great. I am looking in the Mass Amendments under Article 700 and I do not see anything indicating that there needs to be separation. Thanks.

Well it seems they took away the amendment for 2011.

If you look at 2008 or previous you will see that 700.9(D) was heavily amended.

Now I look for it in the 2011 and I do not see it, either it was a mistake or they decided to get rid of it.

 

[DMG_1]

I checked MEC 2008, you are correct. Thanks.

 

[iwire]

I have to say I am very surprised it is gone.

It was my understanding the amendment went in after a an electrical fire in the main electrical room of a large Boston hotel.

The main gear burned up and took out the emergency equipment in the same room leaving a high rise hotel in the dark during evacuation.

 

[mgookin]

I have to say I am very surprised it is gone.

It was my understanding the amendment went in after a an electrical fire in the main electrical room of a large Boston hotel.

The main gear burned up and took out the emergency equipment in the same room leaving a high rise hotel in the dark during evacuation.

Wow! In Fire College we watched videos of the MGM Grand burning in Las Vegas as well as the Dupont (arson) somewhere out in the Carribbean (Puerto Rico maybe). Both very bad fires. Imagine that in the dark!

 

[Pronto Pup]

NFPA 110

NFPA 110

Yes emergency panels and normal power panels are permitted to be located in the same room. This is a very common installation practice.

Chris

I believe there are restrictions in NFPA 110 7.2.2 for this type of installation. For Level 1 systems, "EPSS equipment shall not be installed in the same room with the normal service equipment, where the service equipment is rated over 150 volts to ground and equal to or greater than 1000 amperes."

 

[raider1]

I believe there are restrictions in NFPA 110 7.2.2 for this type of installation. For Level 1 systems, "EPSS equipment shall not be installed in the same room with the normal service equipment, where the service equipment is rated over 150 volts to ground and equal to or greater than 1000 amperes."

Not all municipalities adopt NFPA 110. I was only responding with the NEC requirements.

Chris