Emergency Systems

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DMG_1

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

Chris
 
DMG_1 said:
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
Click to expand...

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
 
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.
 
DMG_1 said:
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.
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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.
 
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.
 
iwire said:
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.
Click to expand...

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!
 
NFPA 110

NFPA 110

raider1 said:
Yes emergency panels and normal power panels are permitted to be located in the same room. This is a very common installation practice.

Chris
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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."
 
Pronto Pup said:
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."
Click to expand...

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

Chris
 
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