Breaker goop?

Reply

  #1  
Old 01-14-15, 05:13 PM
S
Member
Thread Starter
Join Date: Mar 2009
Location: United States
Posts: 489
Received 0 Votes on 0 Posts
Breaker goop?

As I'm replacing / moving some breakers, I noticed on the back of the original ones there's this charcoal-colored goop on the contact area. Is this supposed to be there?

 
Sponsored Links
  #2  
Old 01-14-15, 05:15 PM
pcboss's Avatar
Forum Topic Moderator
Join Date: Jul 2002
Location: Maryland
Posts: 15,078
Received 62 Votes on 54 Posts
That looks like the breaker has taken too much heat and melted. Compare that to a new breaker to see how it should look.
 
  #3  
Old 01-14-15, 05:25 PM
S
Member
Thread Starter
Join Date: Mar 2009
Location: United States
Posts: 489
Received 0 Votes on 0 Posts
It's not melted plastic. It's like a grease.
 
  #4  
Old 01-14-15, 05:36 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 56,259
Received 731 Votes on 686 Posts
Some electricians apply Penetrox, which is an anti corrosion grease, to aluminum bus bars in panels. Although not required and is not detrimental to the performance of the breaker.... that is way too much on those breakers. There should only be a very thin film.

If you intend to clean the bus bars be sure to turn off the main before touching them. Wouldn't hurt to check them with a meter to confirm they are dead.
 
  #5  
Old 01-14-15, 07:19 PM
CasualJoe's Avatar
Member
Join Date: Jan 2010
Location: United States
Posts: 10,490
Received 60 Votes on 51 Posts
I also think that is anti-oxidant grease and it should have never been used. Anti-oxidant is used to protect aluminum wire connections from oxidizing. The aluminum busbars in a loadcenter/panelboard are tin plated, the anti-oxidant does nothing except make a huge friggen mess.
 
  #6  
Old 01-14-15, 08:07 PM
S
Member
Thread Starter
Join Date: Mar 2009
Location: United States
Posts: 489
Received 0 Votes on 0 Posts
Hahaha OK, thanks..........
 
Reply
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: