ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
MRI LED lights dimmer control replacement - wow!
by ghost307. 01/19/18 11:37 AM
Video: Inventor of the GFCI self-testing shocks
by Bill Addiss. 01/17/18 11:11 PM
FPE in Germany
by HotLine1. 01/17/18 07:07 PM
VDE 0100 to introduce AFCIs
by LongRunner. 01/17/18 10:32 AM
Fujifilm Recalls Power Adapter Wall Plugs
by Admin. 01/16/18 07:04 PM
New in the Gallery:
Housebilding DIY wiring
SE cable question
Who's Online Now
1 registered members (mbhydro), 14 guests, and 14 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Equipotential Plane #162760
04/25/07 08:35 AM
04/25/07 08:35 AM
G
George Little  Offline OP
Member
Joined: Jan 2004
Posts: 1,489
Michigan USA
I am interested in the code requirement called out in 682.33. For example if I have an aerating pump located in a pond and the disconnecting means for the pump is on shore and has a metal enclosure. If I'm reading correctly, this controller location would need an equipotential plane of some discription that extends out 3 feet directly below the equipment and is connected to the equipment grounding conductor of the circuit. Has anyone installed such a plane and what did it consist of?


George Little
2017 / 2014 NEC & Related Books and Study Guides
Re: Equipotential Plane [Re: George Little] #162764
04/25/07 10:24 AM
04/25/07 10:24 AM
G
gfretwell  Offline

Member
Joined: Jul 2004
Posts: 9,166
Estero,Fl,usa
This is going to be a real problem that is just waiting for someone to point out the absurdities.
It looks like this can affect every sprinkler pump, fire pump and bait shop aeriator in the country if you use a strict reading of 682.
BTW is an underground aquifer a natural body of water? If not, why not?
That would pick up well pumps.
I do find it strange that a pump in a retention pond has stricter requirements than a pool pump.


Greg Fretwell
Re: Equipotential Plane [Re: gfretwell] #162784
04/25/07 02:40 PM
04/25/07 02:40 PM
HotLine1  Online Content

Member
Joined: Apr 2002
Posts: 6,917
Brick, NJ USA
AH, George:
Starting anothe flamer?? Depends on who you ask, where you are, and how 'good' 682.33 etc is read.
As an EC, last pond aerator I did was it was all PVC, so not an issue.
As AHJ. I have not came upon this situation yet....but the spring thaw is here, may the fun begin?
John


John
Re: Equipotential Plane [Re: HotLine1] #162806
04/25/07 07:59 PM
04/25/07 07:59 PM
G
gfretwell  Offline

Member
Joined: Jul 2004
Posts: 9,166
Estero,Fl,usa
As long as there is no exposed metal around "the equipment" you probably get away with it. No metal enclosures, raceways or supporting hardware.
The one I see as the first casualty is that big disconnect farm you see on golf courses and gated communities for the irrigation/lake control.
Now that is a bunch of big metal boxes on strut. I assume that will become concrete posts and plastic enclosures ... or they will pour a pad and bond it. The "6 over" wire can be used for this bonding. (862.2)
There is also a break if this equipment is fed directly from the service disconnect. 682.33(B) so the lift pumps out on the road probably don't need it.


Greg Fretwell

Featured:

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

 

Member Spotlight
Posts: 165
Joined: March 2007
Show All Member Profiles 
Top Posters(30 Days)
Admin 20
sparky 15
Potseal 14
Popular Topics(Views)
243,554 Are you busy
180,360 Re: Forum
170,838 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.015s Queries: 15 (0.003s) Memory: 0.9595 MB (Peak: 1.0940 MB) Zlib enabled. Server Time: 2018-01-19 23:08:10 UTC