ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
twh 10
Admin 4
Recent Posts
Correct rotation, wrong sequence
by SteveFehr. 05/26/17 05:27 PM
Dryer, Range grounding from "Main" panel
by sparkync. 05/25/17 05:49 PM
210.70 / Wall Switch / When adopted?
by gfretwell. 05/24/17 09:18 PM
Any UL 508 experts out there?
by sparkyinak. 05/23/17 11:04 PM
Heat pump conundrum
by sparkyinak. 05/21/17 08:49 PM
New in the Gallery:
SE cable question
Popular Topics(Views)
236,833 Are you busy
171,851 Re: Forum
164,755 Need opinion
Who's Online Now
0 registered members (), 52 guests, and 10 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#80362 - 04/02/02 08:33 PM Working space in front of Disconnects and Max Height requirements  
ZR600  Offline
Member
Joined: Apr 2002
Posts: 46
Stevens Point, WI, USA
I need to find out when two codes were put into effect. 110-26 and 380-8. I have a old install of several disconnects and a transformer that was done 10 years ago and was in direct violation of these two codes. I don't know where to find out the date these codes went into effect. The contractor installed disconnects over a large transformer and over 7 feet off the ground to the heighest part of the disconnect handle. A insurance agent for the industrial plant told the plant to just put longer handles on the disconnects so you can reach them from the ground without climbing on the transformer. They did that but it is very scarey if the handles will work or break off, and one of them will not even move now all the way to the off lockable position because the handle extension now hits the transformer. Some of us make bad judgement calls but this was just plain stupid on the previous electricians part. Thanks in advance for any help you can give me!

[This message has been edited by ZR600 (edited 04-02-2002).]

[This message has been edited by ZR600 (edited 04-05-2002).]


2017 / 2014 NEC & Related Books and Study Guides

#80363 - 04/03/02 12:48 AM Re: Working space in front of Disconnects and Max Height requirements  
sparks55  Offline
Member
Joined: Mar 2002
Posts: 11
Iowa, USA
ZR600,

These two codes were in effect before 1975. That is the earliest code book I have.

Article 110-26 used to be 110-16 until 1999 when it was reorganized. The distances in table 110-16 were increased in 1978 and have remained the same through the 2002 code. The words "work space shall be clear and extend from floor or platform to the height required by this section" was added in 1996 to address locating transformers and other equipment above or below disconnects. Sounds like in your case that the transformer located below the disconnects met the code at the time it was installed.

Article 380-8 was 6'-6" before 1975 until it was changed to 6'-7" in 1996. That is measured from the floor or platform to the center of the grip of the operating handle in its highest position (ON). It must also be readily accessible, which means no portable ladders, steps, etc. to reach the handle. This definition has been in the code before 1975. If the transformer is large enough to require a step to reach the handle, this is definitely a code violation. Sounds like the disconnects must be relocated.

I find it amazing that these codes have been around for so long and are some of the most ignored and violated safety codes there is! [Linked Image]

Good luck, [Linked Image]

sparks55


#80364 - 04/03/02 08:27 AM Re: Working space in front of Disconnects and Max Height requirements  
ZR600  Offline
Member
Joined: Apr 2002
Posts: 46
Stevens Point, WI, USA
Sparks55, thank you very much for the info! That was exactly what I needed to know. If I can figure how to get pictures of this posted in the picture violation area I will. The other neat thing about this is the industrial plant it is in pushes a 4 1/2' tall desk up with in a 1 1/2' of the transformer so you have to squeeze in just to get in front of the transformer. One of the disconnects is a 400 amp disconnect. I don't want to be around if something ever happens. The industrial plant "may" decide to do something about this. Thanks agian!



Member Spotlight
Attic Rat
Attic Rat
Bergen Co.,N.J. USA
Posts: 524
Joined: December 2003
Show All Member Profiles 
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.010s Queries: 14 (0.002s) Memory: 0.7536 MB (Peak: 0.8754 MB) Zlib enabled. Server Time: 2017-05-26 22:36:06 UTC