[RE-wrenches] clamp on ground impedance tester

[R Ray Walters]

Great idea. What do you use, specifically? Seems like a 4" PVC female adapter with screw in plug would work.

R. Walters
ray at solarray.com
Solar Engineer




On Apr 19, 2010, at 3:40 PM, Chris Worcester wrote:

> We have been installing the grounding electrodes in small round cement or plastic vaults as a great way to inspect the connections but reduce the hazard.
>  
> Sincerely,
> 
> Chris Worcester
> Solar Wind Works
> NABCEP Certified PV Installer
> Phone: 530-582-4503
> Fax: 530-582-4603
> www.solarwindworks.com
> chris at solarwindworks.com
> "Proven Energy Solutions"
>  
> From: re-wrenches-bounces at lists.re-wrenches.org [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of R Ray Walters
> Sent: Monday, April 19, 2010 9:59 AM
> To: RE-wrenches
> Subject: Re: [RE-wrenches] clamp on ground impedance tester
>  
> Hi Drake;
>  
> I have kids, and I agree with you; an exposed ground rod would be a nasty thing to land on. 
> I always had a fear of falling on one with my knee (ugh!), however, I have had inspectors require 4" of ground rod above grade.
> (most installs in New Mexico I see keep the connection above grade)
> 250.53(G) says flush or below grade, so I'm not sure where the 4" above grade AHJ ruling here is coming from.
> Your inspector had it right IMO.
> I leave a few extra inches of conductor, and loop it back over the top of the rod after the clamp, to make a softer top for it.
> I also will stack rocks around the rod after, to protect it as well.
> My previous post was just trying to find a bright side of an otherwise disagreeable local requirement.
>  
> R. Walters
> ray at solarray.com
> Solar Engineer
>  
>  
> 
> 
>  
> On Apr 18, 2010, at 1:38 PM, Drake Chamberlin wrote:
> 
> 
> 
> (another reason to leave the ground rod sticking out of the ground a few inches)
> 
> 
> I had an inspector require me to drive the rod flush.  His concern was that it was a hazard.  A child playing, or anyone for that matter, who fell face down on it could be severely injured.  Other problems are that it is a trip hazard, and it could create issues with lawn moer blades.  I always pound mine below grade.  If I need to access the rod, I just dig around it a bit. 
> 
> 
> 
> Drake Chamberlin
> Athens Electric
> OH License 44810
> CO License 3773
> NABCEP TM  Certified PV Installer 
> Office - 740-448-7328
> Mobile - 740-856-9648
> 
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