ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat Box
Recent Posts
NEC 2017_392.22(B)(1)(b)
_What's the smallest width

by Bill Addiss - 09/17/19 07:13 PM
Another weird NEC code question on Feeder Taps
by pcsailor - 09/17/19 03:34 PM
Does a 'normal 3ph-AC motor' include capacitors?
by HotLine1 - 09/17/19 01:43 PM
NEC Question_Cord-&-Plug EGC shorter then Neutral
by pcsailor - 09/16/19 05:26 AM
Another NEC 2017 Question_240/24VAC Txfr-Neutral R
by pcsailor - 09/16/19 05:22 AM
New in the Gallery:
What is this for?
Plug terminals
Who's Online Now
0 registered members (), 6 guests, and 5 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Is 6x6 welded steel wire OK for 680.26(C)? #100801 01/05/07 12:26 PM
Joined: Jul 2004
Posts: 9,390
G
gfretwell Offline OP
Member
BOAF (Florida) has ruled that in bonding the 3' of pool deck around the pool you can use 6 over steel mesh for the bond. It needs to be connected with a listed method, not just tie wires. This is just the latest guess about what 680.26(C) really says.

Quote

Here is a copy of the BOAF Informal Interpretation released yesterday on the subject of Section 680.26(C) of the 2005 NEC. I’ve also provided a link to download it directly:


http://www.boaf.net/pdf/I-List/4856.pdf





Date: Thu Jan 4 2007

Report #: 4856

Code: ELECTRIC

Section: 680.26(C) (2005 NEC)

Question:

Is it the intent of 680.26(C) to require either steel reinforcing rods (rebar) or #8 bare, solid copper

conductors installed as specified in the code to form the equipotential common bonding grid required for

paved walking surfaces within within three feet of the inside walls of a swimming pool, or is it acceptable

to utilize 6X6 W4 wire welded mesh commonly used for slab reinforcement tied to the reinforcing steel

of the pool shell with wire ties?

Answer:

The recent adoption of the 2005 NEC has generated a lot of discussion whether this is an acceptable

method based on the wording referenced in the code. 6X6X10WWF (Welded Wire Fabric (Mesh)) is

acceptable when properly installed on chairs and each section is clamped with appropriate listed devices

and/or #8 solid copper jumpers. This product is specifically referenced in Article 547 for agricultural

buildings and has been used for many years. While the mesh may not be installed directly in earth contact

or without the proper cover, it is considered to be an acceptable method of meeting the equipotential

bonding grid requirement when properly installed.

Commentary:

Editors Note: Much discussion regarding this requirement has occurred and possible changes to this

section for clarification and/or specifying the requirements are being proposed for the 2008 NEC.

Outcomes from the review of those proposals need to be monitored for possible future changes to this

item.

Notice:

The Building Officials Association of Florida, in cooperation with the Florida Building Commission, the Florida

Department of Community Affairs, ICC, and industry and professional experts offer this interpretation of the Florida

Building Code in the interest of consistency in their application statewide. This interpretation is informal, non−binding and

subject to acceptance and approval by the local building official.


Greg Fretwell
2017 / 2014 NEC & Related Books and Study Guides
Re: Is 6x6 welded steel wire OK for 680.26(C)? #100802 01/05/07 06:35 PM
Joined: Apr 2002
Posts: 7,111
HotLine1 Offline
Member
Gfretwell:
Last I heard in NJ....rebar or #8 Cu. That's to say the 'official' opinion (verbal) from DCA here. Wire is a no-no.

Yes, there's a lot of discussion & some confusion.

We implemented the 2005 as of Nov. 1, 2006. And pool season is about 2-3 months away. Although with the mild (so far) winter, I had two IG pool apps in the pile today.

John

Edit:
Rereading your post, our take is rebar, or the #8 Cu. One EC found the #8 grid, pre made (Haggar I think) it was $$$$$.
IMHO, rebar is economical & should be the way to go.

[This message has been edited by HotLine1 (edited 01-05-2007).]


John
Re: Is 6x6 welded steel wire OK for 680.26(C)? #100803 01/05/07 08:26 PM
Joined: Jun 2004
Posts: 610
S
shortcircuit Offline
Member
gfretwell...

Thank you for the informative post regarding this issue.

Although Masachusetts has adopted the 2005 NEC...I have yet to see any inspection authority enforcing 680.26(C)

shortcircuit

Re: Is 6x6 welded steel wire OK for 680.26(C)? #100804 01/05/07 11:17 PM
Joined: Jan 2004
Posts: 1,498
G
George Little Offline
Member
To Greg and the rest of you monitoring this Board:
Since Michigan will be adopting the '05 NEC soon I would be interested in any additional information on this new requirement for the "grid extention" in the '05 NEC. Please post it here if you don't mind or send me an e-mail with "Pool" in the subject line. Thanks.

[This message has been edited by George Little (edited 01-05-2007).]


George Little
Re: Is 6x6 welded steel wire OK for 680.26(C)? #100805 01/06/07 12:54 AM
Joined: Jul 2004
Posts: 9,390
G
gfretwell Offline OP
Member
We had a long discussion about this a bit over a year ago and there were pictures of the 12 over copper mesh in action.


Greg Fretwell
Re: Is 6x6 welded steel wire OK for 680.26(C)? #100806 01/06/07 11:52 AM
Joined: Aug 2003
Posts: 1,374
R
Ryan_J Offline
Moderator
This will be ceared up in the 2008 NEC, where it specifically permits it. With that said, I would allow it now as an inspector, although I wasn't before.


Ryan Jackson,
Salt Lake City
Re: Is 6x6 welded steel wire OK for 680.26(C)? #100807 01/06/07 12:42 PM
Joined: Jul 2004
Posts: 9,390
G
gfretwell Offline OP
Member
Ryan they still never defined "Reinforcing steel" and the inspectors who thought that meant rebar still will.
IAEI Florida has a discussion about this that is up to 7 pages and they are still arguing about what reinforcing steel is.
http://www.iaeifl.org/cgi-bin/ubb/noncgi/ultimatebb.php?ubb=get_topic;f=26;t=000332;p=1


Greg Fretwell

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
The Watt Doctor
The Watt Doctor
Mont Belvieu, TX
Posts: 437
Joined: December 2001
Show All Member Profiles 
Top Posters(30 Days)
Admin 6
Popular Topics(Views)
258,601 Are you busy
194,194 Re: Forum
183,668 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.3