ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
sec cable code conflict
by HotLine1. 11/20/18 03:08 PM
This anti-theist is priceless!!!
by Texas_Ranger. 11/17/18 02:15 PM
High current GFI vs regular GFCI
by Texas_Ranger. 11/17/18 02:07 PM
Single phase and what you call it.
by dsk. 11/12/18 11:10 AM
New in the Gallery:
What is this for?
Plug terminals
Who's Online Now
1 registered members (gfretwell), 19 guests, and 24 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Page 1 of 2 1 2
Easy Way to remove knock-outs?? #9062
04/16/02 01:06 PM
04/16/02 01:06 PM
R
Reel-Break  Offline OP
Member
Joined: Apr 2002
Posts: 178
nc
Whats the easy way to remove the knockouts in a panel. Seems like they`re getting tough to remove and the wrong one seems to break on occasion.Is their a secrete that I have yet to discover.happened today knocking out 3/4 hole and the 1" poped out.Maybe the screw driver and side cutters are the problem??Operator error possible but surely I`m not the only one.

Work Gear for Electricians and the Trades
Re: Easy Way to remove knock-outs?? #9063
04/16/02 07:09 PM
04/16/02 07:09 PM
Tom  Offline
Member
Joined: Jan 2001
Posts: 1,044
Shinnston, WV USA
I've never found a real good solution to this problem.I have noticed that some brands of equipment are more prone to this trouble.

If in doubt, I'll drill the KO out with a stepper bit. I've also learned to keep at least one pair of reducing washers on the truck for one step down sizing starting with 2 1/2" x 2" down to 3/4" x 1/2".


Few things are harder to put up with than the annoyance of a good example.
Re: Easy Way to remove knock-outs?? #9064
04/16/02 07:27 PM
04/16/02 07:27 PM
E
Electricmanscott  Offline
Member
Joined: Jan 2002
Posts: 1,457
Holden, MA USA
All I can add is be very careful and go easy at it. Usually works for me. No other magic tricks i know of.

Re: Easy Way to remove knock-outs?? #9065
04/16/02 07:46 PM
04/16/02 07:46 PM
R
Redsy  Offline
Member
Joined: Mar 2001
Posts: 2,056
Bucks County PA
Practice makes perfect, but patience is the key.

Re: Easy Way to remove knock-outs?? #9066
04/16/02 08:21 PM
04/16/02 08:21 PM
sparky66wv  Offline
Member
Joined: Nov 2000
Posts: 2,236
West Virginia
Patience, and I also use a small (8", I think) pair of bolt cutters to cut sections of bent/pried KO sections, and the little nub that gets left on occaision...

A variety of reducing washers in stock (and a few grounding bushings) makes things better when the inevitable happens.


-Virgil
Residential/Commercial Inspector
5 Star Inspections
Member IAEI
Re: Easy Way to remove knock-outs?? #9067
04/16/02 09:15 PM
04/16/02 09:15 PM
B
BrianSparky  Offline
Member
Joined: Jan 2002
Posts: 38
Lakewood,CO
I've tried this trick once or twice and it seemed to work:
-duct tape off the larger ko you don't want to remove around the sides
-with a very sharp bit, drill a pilot hole in the center of the ko you want to remove
-then using a hole saw, gently drill out the size you want
the thing is not to force it.
I really prefer cabinets w/o ko's if I can get 'em. When I did industrial I would specify them. It makes it so much easier when laying out your cabinet, and I think it looks a whole lot better too!
-Good Luck!

Re: Easy Way to remove knock-outs?? #9068
04/16/02 11:48 PM
04/16/02 11:48 PM
Joe Tedesco  Offline
Member
Joined: Oct 2000
Posts: 2,749
Boston, Massachusetts USA


Joe Tedesco, NEC Consultant
Re: Easy Way to remove knock-outs?? #9069
04/17/02 05:46 AM
04/17/02 05:46 AM
G
gisbon  Offline
Member
Joined: Apr 2002
Posts: 13
Naples, Fl, USA
I was taught 30 years ago how to remove KO's from panels and it has never failed to work. I, on occasion, have used other methods because I could not find the tool I use. Once I fought with the KO I found the tool.
Dykes. I don't know what to call them besides dykes. I guess wire cutters the pointed kind. I first knock out the smallest ko then take my dykes and cut each side of the next ring midway between the Die nub. Then just grab the Die nub with the dykes and waggle off each half of the ring. This works every time all the time. Any other method creates all those problems.
Try it you'll like it.
Tom

Re: Easy Way to remove knock-outs?? #9070
04/17/02 06:48 AM
04/17/02 06:48 AM
R
Redsy  Offline
Member
Joined: Mar 2001
Posts: 2,056
Bucks County PA
Joe,

EC&M Magazine had a feature about 15 years ago that described the "pliers & screwdriver" method. I have witnessed a few different (frustrating) methods since, but this method, along with some patience, seems to be the quickest and most reliable.

Re: Easy Way to remove knock-outs?? #9071
04/17/02 07:20 AM
04/17/02 07:20 AM
R
Reel-Break  Offline OP
Member
Joined: Apr 2002
Posts: 178
nc
Seems I recall the panel yesterday had 3 ties Today I`ll try the dikes and cut the ring as Gibson said well gotta get at it.

Page 1 of 2 1 2

Featured:

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

 

Member Spotlight
HCE727
HCE727
Delaware County, PA, USA
Posts: 186
Joined: November 2005
Show All Member Profiles 
Top Posters(30 Days)
Admin 7
Popular Topics(Views)
251,647 Are you busy
188,787 Re: Forum
178,503 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.034s Queries: 15 (0.005s) Memory: 1.0245 MB (Peak: 1.2020 MB) Zlib enabled. Server Time: 2018-11-21 05:56:19 UTC