ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
twh 3
Recent Posts
Nec circuit protection
by Yoopersup. 11/22/17 03:22 PM
FPE in Germany
by Texas_Ranger. 11/19/17 07:30 AM
Ceiling fan distance from outdoor hot tub
by gfretwell. 11/16/17 02:18 AM
diazed fuses
by Texas_Ranger. 11/13/17 03:02 PM
Theft deterrent alarm
by gfretwell. 11/12/17 01:39 PM
New in the Gallery:
Gallery Test
Popular Topics(Views)
242,655 Are you busy
178,867 Re: Forum
170,083 Need opinion
Who's Online Now
1 registered members (gfretwell), 19 guests, and 6 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
Page 1 of 4 1 2 3 4
#213105 - 03/21/14 08:12 PM 110.26 C Clearences  
Yoopersup  Offline
Member
Joined: Mar 2003
Posts: 835
Michigan
Question
Large Equipment by definition of the NEC.
Two Exit ways required UNLESS meets Exceptions (a) & (b).
Calls for Doorways. 24 inches wide ,6ft 1/2 High.
One end door / other end Ladder industrial fixed.
Ladder up or down three steps or more.
I have my option I'd like yours.
Yoopersup


2017 / 2014 NEC & Related Books and Study Guides

#213106 - 03/21/14 09:16 PM Re: 110.26 C Clearences [Re: Yoopersup]  
ghost307  Offline
Member
Joined: May 2005
Posts: 917
Chicago Illinois USA
I wouldn't like to have to scurry down a ladder if there was a problem...especially if I was injured. If there were a door that led to the safety of a landing or platform before I had to climb the ladder I might feel better about it.


Ghost307

#213107 - 03/21/14 09:23 PM Re: 110.26 C Clearences [Re: Yoopersup]  
HotLine1  Offline


Member
Joined: Apr 2002
Posts: 6,874
Brick, NJ USA
IF the egress to the 'door' is unobstructed, or the 'door' is located per 'b', you will be OK. The ladder is not in the picture.

Panic hardware on the door!



John

#213109 - 03/21/14 09:28 PM Re: 110.26 C Clearences [Re: Yoopersup]  
HotLine1  Offline


Member
Joined: Apr 2002
Posts: 6,874
Brick, NJ USA
Ghost.
He has a door on one end.

Without any dimensions, and a floor layout, I see noissue with the one door as the prime egress.

I would request panic hardware and an exit/em unit over the door.

Note 'request'. That would be at plan review. The designprofessionals usually have that on a plan, or they honor the 'request'


John

#213110 - 03/21/14 09:56 PM Re: 110.26 C Clearences [Re: Yoopersup]  
Yoopersup  Offline
Member
Joined: Mar 2003
Posts: 835
Michigan
The Question comes down to:
the one door is per Code & layout calls for two doors.
There:s a Door per Code at one end.
A Ladder as described at the other end.
Does the Ladder as stated comply with code requirement.
Exceptions here are not in play!
Yoopersup


#213111 - 03/22/14 12:33 AM Re: 110.26 C Clearences [Re: Yoopersup]  
gfretwell  Online Content


Member
Joined: Jul 2004
Posts: 9,136
Estero,Fl,usa
When I think about "large equipment" I think >600v and that kicks you over to part III.
It still lets a permanent ladder be "access"

110.33(B)
Quote
Access. Permanent ladders or stairways shall be provided
to give safe access to the working space around electrical
equipment installed on platforms, balconies, or mezzanine
floors or in attic or roof rooms or spaces.


Greg Fretwell

#213116 - 03/22/14 09:13 AM Re: 110.26 C Clearences [Re: Yoopersup]  
Yoopersup  Offline
Member
Joined: Mar 2003
Posts: 835
Michigan
Greg
110.33(B) is in part 3 is in the over 600 volt section.
This room has several 1200 amp large 480 volt Mcc;s as well as panels.
110.27 (A) 3 in the 600 v & under section has something similar BUT I don't think it's an Exception to the Door at each end section. If it was then you could have a Ladder at each end and defeat the Purpose & reason for a door with push to release hardware to exit the room if burned or injured.




#213117 - 03/22/14 11:55 AM Re: 110.26 C Clearences [Re: Yoopersup]  
gfretwell  Online Content


Member
Joined: Jul 2004
Posts: 9,136
Estero,Fl,usa
I understand that is over 600v but I would expect that to be more strict.
I think you are going to have a hard time finding language that prevents a permanent ladder being part of the egress route from a switch room.


Greg Fretwell

#213119 - 03/22/14 12:08 PM Re: 110.26 C Clearences [Re: Yoopersup]  
Yoopersup  Offline
Member
Joined: Mar 2003
Posts: 835
Michigan
I'm just looking for language that allows it!
seems in 110.26 (C) there's only exceptions???
Says SHALL at each end.
This is Room & rooms with 480 volt equipment Multiple
1200 & 1600 amp Mcc's .


#213121 - 03/22/14 02:48 PM Re: 110.26 C Clearences [Re: Yoopersup]  
HotLine1  Offline


Member
Joined: Apr 2002
Posts: 6,874
Brick, NJ USA
Yoop:
If I follow you, the one door is code compliant for this job.

You have a layout showing two (2) doors, and the second egress is via a fixed ladder.

As the one door seems to satisfy code, the second door is a moot issue.

Now, as I said above....the physical layout and dimensions of the room and the gear IMHO is required to provide a definite answer that one door is compliant.

IMHO, IF the second egress is required based on the layout, then the fixed ladder will be questionable.

The purpose and intent of the egress paths and the panic style hardware is to get out of harms way if someone is injured, and the ladder could be an insurmountable obstacle in the egress path.



John

Page 1 of 4 1 2 3 4

Member Spotlight
electure
electure
Fullerton, CA USA
Posts: 4,262
Joined: December 2000
Show All Member Profiles 
Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.020s Queries: 16 (0.004s) Memory: 0.8220 MB (Peak: 1.0062 MB) Zlib enabled. Server Time: 2017-11-24 05:50:27 UTC