ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Violation?
by renosteinke - 01/27/23 09:52 PM
Does NEC 551.71 (F) apply to dwellings?
by BigB - 01/20/23 10:46 AM
Power submeter connections
by HotLine1 - 01/19/23 09:09 AM
AFDD's coming to the UK
by Texas_Ranger - 01/17/23 07:22 PM
New in the Gallery:
Burger King crown sillyness
Burger King crown sillyness
by wa2ise, December 11
240/208 to a house
240/208 to a house
by wa2ise, October 9
Who's Online Now
0 members (), 22 guests, and 10 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Joined: Oct 2000
Posts: 4,081
Likes: 3
Member
Hello all,

I've brought this up before, but I don't think there was any real determination on the best way to bond a pool. BTW, I put it over here in the theory section because it's not really a code issue as it can be done either way.

The code just states that the pool and all equipment associated with it be bonded together. Connection of the bonding wire to the EGC of the Power source is optional. Which way would be better? And Why?

Bill


Bill
Joined: Oct 2000
Posts: 5,392
S
Member
i am weak in this area also....

just what is a "voltage gradient" anyway?

is there a reason for solid vs. stranded?

a side note; just what in the world is "underwater audio" ?
[Linked Image]

Joined: Oct 2000
Posts: 4,081
Likes: 3
Member
Sparky,

My understandings:

a Voltage Gradient is a difference in potential from one area to another. Solid is better (I think) because it holds up better against the elements and can take more damage?

Underwater audio? you mean Sonar?? [Linked Image] [Linked Image]


Bill
Joined: Oct 2000
Posts: 5,392
S
Member
ok , so what if there is a difference in potential from the pool area to the service area?
[Linked Image]
I guess i can understand how solid would be hardier...
[Linked Image]

ps- 680-23 was the next code, do people really want underwater speakers installed? maybe i've lead a sheltered life up here, i've never seen such an install, i can't imagine how it would work...
[Linked Image]

Joined: Oct 2000
Posts: 4,081
Likes: 3
Member
Sparky,

I think the issue is having a difference in potential in the pool itself or immediately adjacent to it. Can you imagine Current flowing through the water all the time?

An interesting Article:
http://www.aquaticsintl.com/AI/Issues/Current/99/sep_oct/feature4.shtml

I don't know what Underwater speakers would sound like, probably a lot of Base? I don't expect to be puttin in any. Maybe Seaworld could use them for something.

Bill


Bill
Joined: Oct 2000
Posts: 5,392
S
Member
Note there is many $$$$ to correct a problem that a simple GFI would detect in this article.

There is also mention of the high V side of the service sustaining damage, creating the problem here.

Materials used to "bond" are in question here, so your original Q marches on...

[Linked Image]

Joined: Oct 2000
Posts: 5,392
S
Member
In regards to the original Q. 680 confuses me on the subject, so my approach is to simply overground such installations.

by this is mean extra clamps, rods, bonds , etc. to anything available.

a rather paranoid approach, but so far no grief from the AHJ

[Linked Image]

[This message has been edited by sparky (edited 03-23-2001).]


Link Copied to Clipboard
Featured:

Tools for Electricians
Tools for Electricians
 

* * * * * * *
2023 National Electrical Code (NEC)
2023 NEC Now Available!
 
* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
Samurai
Samurai
Fl.
Posts: 46
Joined: May 2007
Top Posters(30 Days)
BigB 8
triple 3
Popular Topics(Views)
302,642 Are you busy
231,940 Re: Forum
216,591 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5