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#103703 - 10/31/02 11:47 AM Panelboard Cover Hardware  
Joe Tedesco  Offline
Member
Joined: Oct 2000
Posts: 2,749
Boston, Massachusetts USA
[Linked Image]
[Linked Image]

Quote
Joe,

One photo is a close-up of the wingnut and the other is an overall picture of the panelboard. On this panelboard the front cover is secured by screws on the bottom and the use of wingnuts on the top. Is this a violation? I think the fastener should require the use of a tool to remove.

Buddy


Joe Tedesco, NEC Consultant

2017 / 2014 NEC & Related Books and Study Guides

#103704 - 10/31/02 03:35 PM Re: Panelboard Cover Hardware  
mamills  Offline
Member
Joined: Nov 2001
Posts: 745
Wharton, Texas, USA
Not that this is really any excuse for doing this, but...I wonder if this was done in an effort to allow one man to remove and replace one of these enormous covers without assistance (or cribbing the bottom edge of the cover). I had the occasion of seeing a sparky, working solo, trying to remove a SqD I-line MDP panel cover (measuring about 3 1/2' wide by 6' high and weighing god-only-knows how much) and using paint cans, pieces of lumber, etc. to support the cover. I took pity on the guy and stayed around for a bit to help him grunt that thing off the panel and back on again... [Linked Image]

Mike (mamills)


#103705 - 10/31/02 07:18 PM Re: Panelboard Cover Hardware  
spyder  Offline
Member
Joined: Oct 2002
Posts: 210
Massachusetts
The last NQOD Panelboard I worked on had a nice support bracket on the bottom which made it easy to hang the 5foot cover by myself.


#103706 - 10/31/02 09:22 PM Re: Panelboard Cover Hardware  
HotLine1  Offline


Member
Joined: Apr 2002
Posts: 6,872
Brick, NJ USA
A "foot" on the bottom of the cover, two well placed 1/4-20 x 1" bolts on the top, thru from the inside, and two 1/4-20 wing nuts, and it's a one man cover. The above formula works on virtually all brands of panels. It's the "lone sparky's" helper.
The other screws should satisfy the " tool required" to remove comment, as even if you opened the teo wing nuts, you still need a "tool" IF the balance of the screws are installed.

Cutler Hammer has wing nuts on the pull and CT sections of switchboards from the factory. The "bolt" is drilled to accept the utility co. seals, and the wing is drilled also, so the seal can pass thru.

John


John

#103707 - 10/31/02 10:28 PM Re: Panelboard Cover Hardware  
Electricmanscott  Offline
Member
Joined: Jan 2002
Posts: 1,457
Holden, MA USA
What article would I find the "tool required" rule? If some dope wants to get into the panel, wingnuts or screws, they'll get in! At least they didn't skimp on the stickers.


#103708 - 11/04/02 09:26 AM Re: Panelboard Cover Hardware  
ThinkGood  Offline
Member
Joined: Aug 2002
Posts: 1,081
Milwaukee, WI
If ya really want to get picky, the stickers can use some improvement ;-)

http://www.electromark.com/Help_Hints/Signs/ansi_sign_standards.asp


#103709 - 11/05/02 08:24 PM Re: Panelboard Cover Hardware  
John Steinke  Offline
Member
Joined: Apr 2001
Posts: 518
Reno,Nv., USA
The wingnuts are a nice touch- no way for an errant screw point to damage wire insulation!


#103710 - 11/07/02 02:16 PM Re: Panelboard Cover Hardware  
elektrikguy  Offline
Member
Joined: May 2002
Posts: 132
woodstock,ga,usa
The little "foot" for a panel support on the square d panels are a great idea. How many of you get right pissed when you take off the panel cover only to find the main conductors(usually 500's) running right behind the front and spring out towards the front of the panel so the little "foot" won't fit between the conductor and the lip. Gets a bit tense when time comes to put that sucker back on Live.


#103711 - 01/05/03 10:29 AM Re: Panelboard Cover Hardware  
iwire  Offline
Moderator
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
The Company I work for always orders Hinge on Hinge covers and during construction we put one bolt in backwards and use a wingnut
on that one bolt. This keeps the panel closed but is to open to work on. When we finish the factory hardware is put back but you still have the ease of the extra hinge.


Bob Badger
Construction & Maintenance Electrician
Massachusetts

#103712 - 01/05/03 08:21 PM Re: Panelboard Cover Hardware  
Scott35  Offline

Broom Pusher and
Member
Joined: Oct 2000
Posts: 2,708
Anaheim, CA. USA
That Subpanel cover looks like one of those nice old 150 Lb, 6 foot long, flimsy as Jell-o covers used on Zinsco type 42 space Subpanels with intregal Lighting Contactor Cabinets (typically housing an 8 pole Asco Lighting Contactor and a Tork Timeclock).

Those covers are a major pain to replace - even by Two people!!! Mainly due from trying to manipulate the cover so it lines up with the floating nut assemblies on the can, and trying to start threading a bolt while that floating nut moves everywhere!!!

I wish I had thought of replacing the top bolt with a fixed stud, then locking down the cover with a wingnut!!!
I am serious!!! This would have eliminated curse word sessions, dropping of covers when bolts did not start as expected, sweating for 10 minutes per panel cover, the possibility of a "Wild / Twisting / Falling / Hell-Bent" panel cover falling into the subpanel or shearing off insulation while it falls straight down - not to mention the broken toes resulting from those darn things falling straight down onto someone's foot!

As long as this would not be a Compliance Issue, I would like to try it next time I run across one of those F..,,,... err.. Fine panel covers!

Scott s.e.t.


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


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