The Electrical Contractor Network

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

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!


2017 NEC and Related
2017 NEC
Now Available!

Recent Posts
International Wire Colour Codes
by Tjia1981
Today at 12:08 PM
Parking lot pole light swap....
by HotLine1
Today at 09:39 AM
Son of Sparky
by HotLine1
10/20/16 07:43 PM
Speaking of Plugmold ...
by gfretwell
10/17/16 02:37 PM
Broken battery charger? Check for cobwebs!
by gfretwell
10/17/16 02:30 PM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 12
HotLine1 7
renosteinke 6
ghost307 5
Potseal 4
Who's Online
0 registered (), 244 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#82364 - 11/05/02 08:07 PM re: 406.9(B)(1) - Ground Screw
Mike_Riverside Offline

Registered: 08/18/02
Posts: 34
406.9(B)(1) a non colored #10 tek screw ok?

i dont think so, but the foreman says yes.

also are #10 tek screws ok for securing meter base covers? (others were using these screws instead of the screws the equipment came with (square d 5 meter - meter bases))?

2014 / 2011 NEC & Related Books and Study Guides
#82365 - 11/06/02 05:41 AM Re: re: 406.9(B)(1) - Ground Screw
resqcapt19 Offline

Registered: 11/10/00
Posts: 2209
Loc: IL
406.(B)(1) applies to the screw that is factory installed on the yoke of a receptacle. Are you removing and replacing this screw with a tec screw? Did you intend to refer to 250.8? If so I would classify a tec scre as a sheet metal screw.
In my opinion the screws provided by the manufacturer are requied to be used on the meter cover.

#82366 - 11/06/02 07:34 AM Re: re: 406.9(B)(1) - Ground Screw
jlhmaint Offline

Registered: 05/25/02
Posts: 208
Loc: Fredericktown, OH, U.S.A
I have been told the same as you Mike_Riverside. But i always do it my way with the equipment that came with it or drill out and use a regular nut and bolt.

same with hanging conduit alot of guys at our shop will secure the one hole straps using TEK screws. and i disagree with them i just don't trust TEK screws for these types of applications, they strip out easy and tend to come loose over time. I always hang using my Unibit and nut and bolts takes little longer but i trust it.

#82367 - 11/07/02 04:41 PM Re: re: 406.9(B)(1) - Ground Screw
John Steinke Offline

Registered: 04/03/01
Posts: 509
Loc: Reno,Nv., USA
Opinions are like fingers- most of us have a handful of them!
I say that any screw that threads into the correctly sized hole for its' threads is OK. Therefore, a Teks screw is ok, as it drill the right size hole. An ordinary sheet metal, or dryall screw, that just happen to 'fit' into an existing hole is NOT ok.
Of course, both Joe Tedesco and Mike Holt disagree with me on this.
I do hope that someone brought this up for the 2005 code!

#82368 - 11/07/02 05:24 PM Re: re: 406.9(B)(1) - Ground Screw
sparky66wv Offline

Registered: 11/17/00
Posts: 2334
Loc: West Virginia
I've never seen a green tek screw...

Do you paint it? Green Sharpie?

"...not readily removable..."


[This message has been edited by sparky66wv (edited 11-07-2002).]

#82369 - 11/08/02 03:20 AM Re: re: 406.9(B)(1) - Ground Screw
Electricmanscott Offline

Registered: 01/12/02
Posts: 1478
Loc: Holden, MA USA
The NEC says nothing about the screw size and hole nor does it specify specific types of sheet metal screws. It simply says sheet metal screws shall not be used. A tek screw is a type of sheet metal screw and not a "listed means" therfore it is a violation.

#82370 - 11/08/02 03:44 AM Re: re: 406.9(B)(1) - Ground Screw
Joe Tedesco Offline

Registered: 10/07/00
Posts: 3325
Loc: Boston, Massachusetts USA

For your information, I already sent in a proposal for an earlier code to clarify the "sheet metal screw" subject, asking for machine threads and it was rejected for some reason I cannot remember.

[This message has been edited by Joe Tedesco (edited 11-08-2002).]
Joe Tedesco, NEC Consultant


ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals