ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat Box
Recent Posts
Pool Lights?
by Papa - 09/18/20 05:26 PM
Ever been afflicted by Gout?
by mbhydro - 09/15/20 05:50 PM
Questioning the electrical norms
by gfretwell - 09/13/20 01:17 PM
120/208 gives 240? please clarify
by NORCAL - 09/13/20 01:08 AM
Lock-down Thread
by Trumpy - 09/11/20 11:17 PM
New in the Gallery:
Facebook follies, bad wiring
FPE in Germany pt.2
Who's Online Now
0 registered members (), 17 guests, and 13 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 02:06 PM
Joined: Apr 2002
Posts: 178
R
Reel-Break Offline OP
Member
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 08:09 PM
Joined: Jan 2001
Posts: 1,044
Tom Offline
Member
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 08:27 PM
Joined: Jan 2002
Posts: 1,457
E
Electricmanscott Offline
Member
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 08:46 PM
Joined: Mar 2001
Posts: 2,056
R
Redsy Offline
Member
Practice makes perfect, but patience is the key.

Re: Easy Way to remove knock-outs?? #9066 04/16/02 09:21 PM
Joined: Nov 2000
Posts: 2,236
sparky66wv Offline
Member
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 10:15 PM
Joined: Jan 2002
Posts: 38
B
BrianSparky Offline
Member
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 04/17/02 12:48 AM
Joined: Oct 2000
Posts: 2,749
Joe Tedesco Offline
Member


Joe Tedesco, NEC Consultant
Re: Easy Way to remove knock-outs?? #9069 04/17/02 06:46 AM
Joined: Apr 2002
Posts: 13
G
gisbon Offline
Member
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 07:48 AM
Joined: Mar 2001
Posts: 2,056
R
Redsy Offline
Member
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 08:20 AM
Joined: Apr 2002
Posts: 178
R
Reel-Break Offline OP
Member
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:

2020 National Electrical Code
2020 National Electrical
Code (NEC)

* * * * * * *

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

 

Member Spotlight
JoeKP
JoeKP
Berkley, MA
Posts: 144
Joined: March 2008
Show All Member Profiles 
Top Posters(30 Days)
Trumpy 8
NORCAL 3
Popular Topics(Views)
269,922 Are you busy
204,353 Re: Forum
192,572 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.3