It is currently Thu Nov 23, 2017 4:45 pm



Post new topic Reply to topic
Author Message
ekstra   ara
 Post subject: Working with Switch Open
PostPosted: Thu Jul 01, 2010 9:50 am 
Offline

Joined: Thu Jul 01, 2010 9:39 am
Posts: 1
I am getting conflicting advise on allowing people to work inside a cubicle, i.e. change fuses even if the power is off. We open cubile switch with approriate PPE or remote device but the bus behind is still energized. Some say newer gear is protected as the action of opening swith pulls the lugs out of the bus so no PPE required, others say we must use PPE as per calorie rating of the main panel as long as bus is hot behind cubicle for any work inside cubcile.

Has anyone come accross this?


Top
 Profile Send private message  
Reply with quote  
 Post subject:
PostPosted: Thu Jul 01, 2010 10:27 am 
Offline
Plasma Level

Joined: Mon Jun 02, 2008 11:58 am
Posts: 1103
Location: Charlotte, NC
Cosma wrote:
I am getting conflicting advise on allowing people to work inside a cubicle, i.e. change fuses even if the power is off. We open cubile switch with approriate PPE or remote device but the bus behind is still energized. Some say newer gear is protected as the action of opening swith pulls the lugs out of the bus so no PPE required, others say we must use PPE as per calorie rating of the main panel as long as bus is hot behind cubicle for any work inside cubcile.

Has anyone come accross this?


Still need PPE for arc flash (Not shock) unless the equipment is arc rated.


Top
 Profile Send private message  
Reply with quote  
 Post subject:
PostPosted: Mon Jul 12, 2010 5:08 am 
Offline
Sparks Level

Joined: Fri May 01, 2009 9:10 am
Posts: 73
Afb

Arc rated PPE is required on any part of the body that crosses the AFB. The controversy here is... Where is the AFB? Is it only enforced on exposed parts only? Or, is it enforced on any non-arc-rated electrical equipment regardless of the door/panels being secured based on an INTERACTION that might cause an arc flash. If the latter is true, what is the interaction? A side note: Are the phase conductors properly grounded with devices rated for the available fault current?


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


Who is online

Users browsing this forum: No registered users and 2 guests


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
© 2017 Arcflash Forum / Brainfiller, Inc. | P.O. Box 12024 | Scottsdale, AZ 85267 USA | 800-874-8883