Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net

   Home   Help Search  
Pages: [1]   Go Down
  Print  
Author Topic: Ground to Well Caseing?  (Read 842 times)
KB8MCZ
Member

Posts: 59


WWW

Ignore
« on: October 15, 2002, 07:05:56 PM »

I have a outside water well and the cast iron caseing is 235 FT down to bedrock and there is no electrical pump down there. Can I run a ground to it for better grounding?

Dave KB8MCZ1@AOL.COM
Logged
WB2WIK
Member

Posts: 20613




Ignore
« Reply #1 on: October 16, 2002, 11:16:11 AM »

Sure you can.

But it may not be a real "ground," since cast iron is not a good conductor and sacrifices itself to the soil slowly, making a ferrous oxide interface.  The reason electrical ground rods are copperclad steel is because copper doesn't do that.

When I lived back east, I had a 240' deep well at one home, and when I measured the electrical resistance to a brand new 8' copperclad ground rod I smacked into the earth almost right next to the well, the resistance was nearly infinity!

WB2WIK/6
Logged
K9KJM
Member

Posts: 2415




Ignore
« Reply #2 on: October 24, 2002, 02:47:47 AM »

I always ground to well casings. They are NOT cast iron, but steel pipe, all arc welded together.
A great ground rod. But do not expect any big
improvement for RF.......   For improvement in
RF radiation, Horizontal "radials" just above, or
below the surface are what is needed.
The well casing is a good safety and/or lighting
ground. The moist concrete that is poured around
them deep underground makes them one of the best
grounds available.  
We just had a well drilled at a commercial tower site
that was all bedrock (Unable to get ANY regular
ground rods driven in) For the sole purpose of "grounding"   Cadweld is the best way to attach to the casing, But arc welding a stainless
bolt, or even a few stainless hose clamps around will
be better than not connecting to it.
Logged
WA4PTZ
Member

Posts: 528




Ignore
« Reply #3 on: November 24, 2002, 08:04:24 AM »

I believe I would set up a ground grid using at least
3 ground rods and some #6 or 1 inch strap copper.
The well casing sounds like a great ground but not
only is it questionable but there may be serious
complications if high power or lightning ever hits it.
The casing may be destroyed or damaged beyond use
and have to be replaced. This is very expensive.
Logged
N6AJR
Member

Posts: 9912




Ignore
« Reply #4 on: December 17, 2002, 12:13:49 AM »

there is new research the shows that well grounded structures send up "streamers " which attract lightning strikes. this is new stuff in the last year or so.. don't know if the big push for lightning ground is going to be "all that" when this info is in.  saw a program on discovery tv which give a good case NOT to ground.  literally it attracts the strikes.  

I'm no expert but the show made sense, it starts with guys shooting rockets into the air with wire attached in a storm to draw lightning, and ends with a picture of this girl in the middle of a croud at a foot ball game getting struct buy it.  streamers were the cause..  check it out.. I just saw the show, I ain't no expert... tom N6AJR
Logged
KL7IPV
Member

Posts: 984




Ignore
« Reply #5 on: February 10, 2003, 11:57:21 PM »

Tom,  you are correct. The show was "Lightning" and runs on the Discovery channel frequently. It is a really good reason NOT to be outside when the lightning is. It will sure give you a real insight about the affects of lightning and how it strikes.
73
Frank
KL7IPV
Logged
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!