large equipment questions

[hhsting]

Please see attached sketch. I have electrical room first floor of high rise. I have two doors however for both doors you have to climb steps down to get to electrical room. To get out climb steps down

In the electrical room I have three switchboards. All three large equipment as follows:

a. 4000A 208/120V three phase switchboard label 208/120V three phase in attached sketch

b. 4000A 208/120V three phase switchboard label 208/120V three phase in attached sketch

c. 2000A 277/480V three phase switchboard label 480/277V three phase in attached sketch

If you climb the top stairs when inside electrical room you go to loading dock room inside building and then you can go outside building from door in loading dock

If you climb the bottom stairs when inside electrical room you go to corridor which leads to loading dock room inside building then their is door which you go outside building from loading dock room

The two 208V switchboards are opposite each other with distance of 9.5 feet. The minimum distance from switchboard diagonal to top door bottom is 15 feet and 10 feet

The 480V switchboard is downstream of 208V switchboard same room. The distance from switchboard to bottom door wall is 14 feet. Distance from 480V switchboard to bottom of stairway is 10 feet.

Their is within 5 feet of 480V switchboard steel column.

All the above in attached sketch below

Questions:

1. Do the switchboards configuration comply with NEC 2017 section 110.26(C)(2)(b), or 110.26(C)(2)or not? If it does then which one? Since their are three switchboards I cannot tell

2. Egress from electrical room leads to loading room not outside. Is their a rule in any code that says egress from electrical room lead to corridor or outside for high rise?

3. Does NEC 2017 section 110.26(C)(3) mean switchboards have to be located 25 feet from door or switchboards can be located more then 25 feet away from door? Not clear

 

[hhsting]

Please see attached sketch. I have electrical room first floor of high rise. I have two doors however for both doors you have to climb steps down to get to electrical room. To get out climb steps down

In the electrical room I have three switchboards. All three large equipment as follows:

a. 4000A 208/120V three phase switchboard label 208/120V three phase in attached sketch

b. 4000A 208/120V three phase switchboard label 208/120V three phase in attached sketch

c. 2000A 277/480V three phase switchboard label 480/277V three phase in attached sketch

If you climb the top stairs when inside electrical room you go to loading dock room inside building and then you can go outside building from door in loading dock

If you climb the bottom stairs when inside electrical room you go to corridor which leads to loading dock room inside building then their is door which you go outside building from loading dock room

The two 208V switchboards are opposite each other with distance of 9.5 feet. The minimum distance from switchboard diagonal to top door bottom is 15 feet and 10 feet

The 480V switchboard is downstream of 208V switchboard same room. The distance from switchboard to bottom door wall is 14 feet. Distance from 480V switchboard to bottom of stairway is 10 feet.

Their is within 5 feet of 480V switchboard steel column.

All the above in attached sketch below

Questions:

1. Do the switchboards configuration comply with NEC 2017 section 110.26(C)(2)(b), or 110.26(C)(2)or not? If it does then which one? Since their are three switchboards I cannot tell

2. Egress from electrical room leads to loading room not outside. Is their a rule in any code that says egress from electrical room lead to corridor or outside for high rise?

3. Does NEC 2017 section 110.26(C)(3) mean switchboards have to be located 25 feet from door or switchboards can be located more then 25 feet away from door? Not clear

Can anyone help? Any opinions?


Sent from my iPhone using Tapatalk

 

[petersonra]

I've seen a fair number of switchboard rooms where the emergency exit does not go directly outside.

I've also seen some switchboard rooms that didn't have walls, just fences. They had what looked to me to be gates as opposed to doors.

 

[hhsting]

I've seen a fair number of switchboard rooms where the emergency exit does not go directly outside.

I've also seen some switchboard rooms that didn't have walls, just fences. They had what looked to me to be gates as opposed to doors.

Ok but do you know if any codes prohibit exit from electrical does not directly lead to outside or says to corridor or outside only?

Also Electrical room with large equipments in sketch is at the bottom of two stairs. Both stairs are inside the electrical room. One has to climb the two stairs to exit out of the electrical room doors.

Given what is shown is it compliance with 110.26(C) NEC 2017 or not? Also Are stairs prohibited in any code to egress?

 

[rc/retired]

Ok but do you know if any codes prohibit exit from electrical does not directly lead to outside or says to corridor or outside only?

Also Electrical room with large equipments in sketch is at the bottom of two stairs. Both stairs are inside the electrical room. One has to climb the two stairs to exit out of the electrical room doors.

Given what is shown is it compliance with 110.26(C) NEC 2017 or not? Also Are stairs prohibited in any code to egress?

No
That's ok
In compliance. Also no