ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

ECN Shout Chat
Top Posters(30 Days)
Admin 19
Recent Posts
fuse rejectors
by NORCAL. 03/29/17 01:44 AM
Old decora style outlets
by NORCAL. 03/29/17 01:41 AM
NFPA stuff
by gfretwell. 03/28/17 08:08 PM
Anyone hiring inspectors?
by HotLine1. 03/27/17 08:03 AM
ESA Arc flash course
by TheShockDoctors. 03/24/17 10:15 AM
New in the Gallery:
SE cable question
Popular Topics(Views)
231,694 Are you busy
166,595 Re: Forum
160,773 Need opinion
Who's Online Now
0 registered members (), 58 guests, and 10 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#23654 - 03/24/03 01:35 AM removing Zinsco breakers  
amp-man  Offline
Member
Joined: Jun 2001
Posts: 141
Sacto, California US of A
Hey y'all,

Anyone have any tips on removing Zinsco breakers form vertical-bus panels? Recently I had to swap out a breaker in a subpanel which was full. The breaker clip of the one I was taking out was in good condition (not corroded or welded to busbar). Even after prying back the retaining bar on the terminal side, I had to pry out the old breaker (and I broke it in the process.)

On the horizontal bus panels, it's easy to get the breakers out, once you move the retainer bar up out of the way. But the vertical bus panels aren't set up this way. So, what method do you use? Yea, and don't tell me to just replace the panel.

One thing I noticed once when stripping the breakers out of an old Zinsco, the entire hot bus assembly can be removed from the panel--just popped out. Now I think I know how those old panels were made up--the cables brought in and dressed, neutrals & grounds terminated, then the "guts" put in, feeders landed, and the breakers clipped in. Pretty slick, really.

Cliff


Work Gear for Electricians and the Trades

#23655 - 03/25/03 04:46 PM Re: removing Zinsco breakers  
kale  Offline
Member
Joined: Nov 2002
Posts: 174
sledgehammer!


#23656 - 03/25/03 07:04 PM Re: removing Zinsco breakers  
Scott35  Offline

Broom Pusher and
Member
Joined: Oct 2000
Posts: 2,707
Anaheim, CA. USA
Dynamite also works well in removing these Breakers, and also eliminates the problems of fried bus kits in Panelboards for QFP frames.

Scott35


Scott " 35 " Thompson
Just Say NO To Green Eggs And Ham!

#23657 - 03/26/03 02:40 AM Re: removing Zinsco breakers  
amp-man  Offline
Member
Joined: Jun 2001
Posts: 141
Sacto, California US of A
Thanks guys!

A stick of 40%, yea, I like that.

Or maybe some thermite? If it works for cutting main line rail...

Cliff


#23658 - 03/26/03 03:26 PM Re: removing Zinsco breakers  
Bjarney  Offline
Moderator
Joined: Apr 2002
Posts: 2,527
West-Southern Inner-Northeast ...
Should greater precision be needed, there's always Trainwire's famous thermally enhanced approach... ;-)

[Linked Image]




[This message has been edited by Bjarney (edited 03-26-2003).]


#23659 - 03/30/03 07:20 PM Re: removing Zinsco breakers  
wocolt  Offline
Member
Joined: Dec 2002
Posts: 110
Ahhh Zinsco, and its brother in crime FPE. I think the term selective Demolition is appropriate here.
Like maybe a 1/4 # of C-4 would do the job nicely OR use the torch as suggested in the picture.

WOC


#23660 - 03/30/03 10:48 PM Re: removing Zinsco breakers  
mamills  Offline
Member
Joined: Nov 2001
Posts: 745
Wharton, Texas, USA
That picture of Bjarney's/Trainwire's kinda reminds me of an old Zinsco at a fire call one time, burning it's way into oblivion...to the horror of the homeowner. [Linked Image] It really looked very much like that torch!

Homeowner has a nice new SqD QO now...

Mike (Mamills)



Member Spotlight
dougwells
dougwells
kamloops BC Canada
Posts: 1,137
Joined: May 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: 0.014s Queries: 14 (0.003s) Memory: 0.7830 MB (Peak: 0.9372 MB) Zlib enabled. Server Time: 2017-03-29 07:08:10 UTC