Any requirement in NEC 2017 for something like this

[hhsting]

Attached sketch shows 800A meter stack over six feet wide in electrical room. The width between meter stacks and electrical room is 15.22 inches. Person cannot get into bottom space

Question:

1 Assume that breakers and meters are facing label S1 then would width of 15.22 inches be enough? Is their any requirement in NEC 2017?

2. Assume that breakers and meters are facing label S2 then would width of 15.22 inches be enough to get out of bottom space? Is their any requirement NEC 2017?

 

[tortuga]

110.26(C)(1)

 

[Johnhall30]

110.33

 

[pv_n00b]

Outside of the NEC requirements, do you really want to put someone back there with an arc flash event and expect them to get out? Just because you can do something does not mean you should. And yes 110.33(A) requires 24".

 

[tortuga]

H Hsting is a plans reviewer not the designer, he posts lots of sketches of oddball situations for us to mull over.

 

[hhsting]

Outside of the NEC requirements, do you really want to put someone back there with an arc flash event and expect them to get out? Just because you can do something does not mean you should. And yes 110.33(A) requires 24".

110.33 is for medium voltage over 600V no? I dont have NEC 2017 with me. What I have is 208/120V three phase less than 600V

 

[tortuga]

110.33 is for medium voltage over 600V no? I dont have NEC 2017 with me. What I have is 208/120V three phase less than 600V

Thats why I posted 110.26(C)(1), you'll need to interpret 'sufficient area'. The width of a door to the electrical room seems reasonable in that case.