Nfpa-110

[nick3120]

I have couple of questions over NFPA-110 :-

1. Are there any code/requirements called from NFPA110/NEC/NFPA99/NFPA101/OSHA regarding the lightning/egress of generators??

2. In section 4, clause 4.1 of NFPA-110, it says the rating/reliablilty as per table 4.1 and 4.2..So, what does the 10 Seconds stands/mean in this table??
What I am wondering about is..does that 10 Seconds for EPSS stands for full load??

Regards,
Nick

 

[tom baker]

Emergency lighting not required by NFPA 110, NEC only covers wiring to E light outlets, don't know about other, it makes a difference if generator is inside or out

I believe the ten seconds is for the generator to be up to speed only required for an Article 700 application.

 

[steve66]

I have couple of questions over NFPA-110 :-

1. Are there any code/requirements called from NFPA110/NEC/NFPA99/NFPA101/OSHA regarding the lightning/egress of generators??

2. In section 4, clause 4.1 of NFPA-110, it says the rating/reliablilty as per table 4.1 and 4.2..So, what does the 10 Seconds stands/mean in this table??
What I am wondering about is..does that 10 Seconds for EPSS stands for full load??

Regards,
Nick

Yes, there is a requireement for a battery powered light at the generator for indoor installations. Its not an egress thing -its more about providing some light for people who need to be around the generator if it fails to start during a power outtage.

The 10 seconds means the generator must start and transfer the load within 10 seconds of power being lost. Its for whatever load is on the generator. Its usually verified by actual tests - shut off the power and time the delay until the lights come back on.

Does that help, or am I not understanding the question?

 

[nick3120]

Steve,

As you mentioned about the requirements for battery lighting..could you please tell me where I can find that clause..So, I guess there are requirements which tell/says about the lighting within generator? I mean I do know the standard for Europe which clarifies this..but was just guessing where I can find the North America requirements..

 

[qcroanoke]

Steve,

As you mentioned about the requirements for battery lighting..could you please tell me where I can find that clause..So, I guess there are requirements which tell/says about the lighting within generator? I mean I do know the standard for Europe which clarifies this..but was just guessing where I can find the North America requirements..

NFPA 110-7.3.1
2002 edition.
But it depends on if it is a level 1 or level 2 EPSS

Is your application a legally required system?

 

[nick3120]

qcroanoke


It's Level-1 system, type-10 and thank you very much for pointing out the requirements..But if you will see the NFPA-110 A.7.3.3, it says "It is Recommended that a flash light or battery-powered light with a flexible cord be maintained in the housing".

So, not sure that if it's a regulation/code or just a recommened..I mean what does AHJ'S prefer in washington/Callifornia/Oregon??

 

[qcroanoke]

qcroanoke


It's Level-1 system, type-10 and thank you very much for pointing out the requirements..But if you will see the NFPA-110 A.7.3.3, it says "It is Recommended that a flash light or battery-powered light with a flexible cord be maintained in the housing".

So, not sure that if it's a regulation/code or just a recommened..I mean what does AHJ'S prefer in washington/Callifornia/Oregon??

That must be new, all I have is 2002. Is that refering to an exterior genset?

Recommended is just that, recommended. Not required.
If it was required the word "shall" or "must" would have been used.
As far as what the AHJ's prefer I'm sure they would like to see it but unless it's a local amendment or in some other NFPA document that the jurisdiction has adopted they legally cannot require it.

 

[qcroanoke]

That must be new, all I have is 2002. Is that refering to an exterior genset?

It's not new. Was in my 2002 edition. Didn't see the A in there! But it is referencing an exterior genset. Is that what you have?

 

[nick3120]

It's just refering to EPSS/EPS..it doesn't say anything regarding exterior..I think NFPA-110 codes/requirements will tell you the class/type/EPS/EPSS and after that the codes/requirements apply to these..I am not sure about exterior or interior..I mean EPS/EPSS can be used interior/exterior of Hospital/Schools etc..

 

[steve66]

Unless its changed, a battery powered light (unit equipment) is required for indoor locations. And a flashlight or something similar is recommended for exterior locations.

Steve