It is currently Thu May 28, 2020 1:29 am



Post new topic Reply to topic
Author Message
ekstra   ara
 Post subject: induced voltage <=480V = hazard?
PostPosted: Wed Jul 21, 2010 10:40 am 

Joined: Fri Sep 05, 2008 8:10 am
Posts: 36
Could someone shed some light on this section? When working on equipment <=480V I have not seen the application of safety grounds as standard practice. I don't think the issue of induced voltage is a concern on these types of systems but have no proof or data to support my feeling. Does anyone have information on how I can best explain this to a safety department why this does not need to be done as is the norm on medium & high voltage lines.

120.1(6) Where the possibility of induced voltages or stored electrical energy exists, ground the phase conductors or circuit parts before touching them. Where it could be reasonably anticipated that the conductors or circuit parts being deenergized could contact other exposed energized conductors or circuit parts, apply ground connecting devices rated for the available fault duty.

Thank you


Top
 Profile Send private message  
Reply with quote  
 Post subject:
PostPosted: Tue Aug 24, 2010 6:47 am 

Joined: Thu Jan 07, 2010 6:42 am
Posts: 35
Location: Bowling Green, KY
[font="Comic Sans MS"][SIZE="3"]I've been around 480 volts or less for better than 35 years and have not heard of grounding that level of voltage after a Safe Work Condition is verified. Generally we just lock out and go after verification. [/size][/font]


Top
 Profile Send private message  
Reply with quote  
 Post subject:
PostPosted: Mon Sep 20, 2010 6:28 am 
Sparks Level
User avatar

Joined: Sun Aug 16, 2009 8:42 am
Posts: 184
Location: Lawrenceburg KY
There is no capacative effect such in HV cabling that exist in properly grounded 480v systems.


Top
 Profile Send private message  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 

All times are UTC - 7 hours


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
cron
© 2019 Arcflash Forum / Brainfiller, Inc. | P.O. Box 12024 | Scottsdale, AZ 85267 USA | 800-874-8883