EM Circuits

[Alwayslearningelec]

Do lighting circuits from an EM panel ALWAYS have to be in a separate conduit from circuit from a normal panel?

 

[roger]

If they are truly EM circuits yes. Take some time and read article 700.

 

[lordofthisworld]

Do lighting circuits from an EM panel ALWAYS have to be in a separate conduit from circuit from a normal panel?

If they deal with article 700, yes.
If they deal with legal required or optional, no

 

[rambojoe]

If they are truly EM circuits yes. Take some time and read article 700.

Why would someone who isnt a electrician or even a engineer take the time to read it?!
He's got you guys
Teach a kid to fish...

 

[Alwayslearningelec]

If they are truly EM circuits yes. Take some time and read article 700.

I def will. Hopefully it's easy to differentiate EM from 701 and 702.

 

[Alwayslearningelec]

If they deal with article 700, yes.
If they deal with legal required or optional, no

Hopefully I can easily distinguish between them.

 

[Alwayslearningelec]

Granted I only read 700 and 701 for 20 minutes they are( as I thought) hard to distinguish the difference. Meaning if I'm looking at a job with emergency power riser what in the design would indicate it's EM or legally required standby?

 

[don_resqcapt19]

Granted I only read 700 and 701 for 20 minutes they are( as I thought) hard to distinguish the difference. Meaning if I'm looking at a job with emergency power riser what in the design would indicate it's EM or legally required standby?

The NEC does not tell you which is which, the NEC only tells you how to wire them after some other code or standard has told you which is which.

 

[Alwayslearningelec]

The NEC does not tell you which is which, the NEC only tells you how to wire them after some other code or standard has told you which is which.9k.. ut

Ok. But I'm trying to determine ...on a job we have...if the em lighting needs to be separate raceway. 700 it does and 701 it doesn't . I can't determine which article my em lighting falls under

 

[roger]

701 isn't Emergency, read the titles of each article. If the designer is calling them Emergency (correctly or incorrectly) then you need to treat them as such.

 

[tank728]

Ok. But I'm trying to determine ...on a job we have...if the em lighting needs to be separate raceway. 700 it does and 701 it doesn't . I can't determine which article my em lighting falls under

If I’m not mistaken a lot your projects happen in NYC. If that’s true then it should be pretty easy as NYC local amendments states something like all 701 loads are to be treated like article 700.

 

[don_resqcapt19]

Ok. But I'm trying to determine ...on a job we have...if the em lighting needs to be separate raceway. 700 it does and 701 it doesn't . I can't determine which article my em lighting falls under

Are the emergency lights powered by a generator? Are there battery powered emergency lights. How many transfer switches are there?

 

[Alwayslearningelec]

Are the emergency lights powered by a generator? Are there battery powered emergency lights. How many transfer switches are there?

The generator powers transfer switches which power emergency panels which power the lights

 

[don_resqcapt19]

The generator powers transfer switches which power emergency panels which power the lights

In most cases that would be an Article 700 installation. We don't have any where near enough details to really know.

 

[Alwayslearningelec]

In most cases that would be an Article 700 installation. We don't have any where near enough details to really know.

I'm sure it is. Thanks for the insight and help. Thing to get out of running separate conduits.