ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
VDE 0100 to introduce AFCIs
by sparky. 01/20/18 05:09 PM
MRI LED lights dimmer control replacement - wow!
by Potseal. 01/19/18 08:52 PM
Video: Inventor of the GFCI self-testing shocks
by Bill Addiss. 01/17/18 11:11 PM
FPE in Germany
by HotLine1. 01/17/18 07:07 PM
Fujifilm Recalls Power Adapter Wall Plugs
by Admin. 01/16/18 07:04 PM
New in the Gallery:
Housebilding DIY wiring
SE cable question
Who's Online Now
0 registered members (), 8 guests, and 12 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Hight voltage clearences #87414
03/05/04 01:37 PM
03/05/04 01:37 PM
Y
Yoopersup  Offline OP
Member
Joined: Mar 2003
Posts: 840
Michigan
Where would one find info on the clearence required for a 4160 high voltage utilty line over the roof of a building(industrial) paper mill.There thinking of adding an Addition and the current line would run over the addition. Yes I know some well say contact the utilty company, But its gotta be somewhere.(located in michigan)

2017 / 2014 NEC & Related Books and Study Guides
Re: Hight voltage clearences #87415
03/05/04 02:29 PM
03/05/04 02:29 PM
G
George Corron  Offline
Member
Joined: May 2001
Posts: 717
Lorton, Va USA
This is a lousy answer, but you can find it in Artlicle 234 of the National Electrical Safety code, but you have to know your cable type, wind load, etc to calculate.

Article 110 and 490 of the NEC do not really address any specifics of 4,160. OSHA is very concerned where there is access to the roof. Will there be equipment requiring service up there? If so, I suggest the minimum is 10 feet which is the minimum clearance for working unless trained, and properly PPE'd.

Hope this gives you an idea where to start.

Re: Hight voltage clearences #87416
03/05/04 09:06 PM
03/05/04 09:06 PM
O
OreElect  Offline
Member
Joined: Mar 2004
Posts: 98
Salem,Oregon.USA
clearances;225.60 Over 600v
230.24 not over 600v

Re: Hight voltage clearences #87417
03/06/04 10:42 AM
03/06/04 10:42 AM
B
Bjarney  Offline
Moderator
Joined: Apr 2002
Posts: 2,527
West-Southern Inner-Northeast ...
FWIW, there is a regional 'NESC-like' document at ftp://ftp.cpuc.ca.gov/gopher-data/GO/GO95.pdf {2.5MB pp.441}


Featured:

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

 

Member Spotlight
MarkC10
MarkC10
CA, Inland Empire
Posts: 43
Joined: September 2013
Show All Member Profiles 
Top Posters(30 Days)
Admin 20
sparky 16
Potseal 15
Popular Topics(Views)
243,572 Are you busy
180,369 Re: Forum
170,846 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.014s Queries: 14 (0.003s) Memory: 0.9577 MB (Peak: 1.0905 MB) Zlib enabled. Server Time: 2018-01-21 02:43:12 UTC