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[TowerTalk] Peripheral ground system

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Subject: [TowerTalk] Peripheral ground system
From: (Barry Kutner)
Date: Thu, 11 Jun 1998 11:23:03 +0000
On 11 Jun 98, Pete Smith <> wrote:

> More to the point, what does the frost line have to do with buried wire,
> anyway?  If you don't bury radials that deep, why would you have to do so
> with a perimeter ground wire?  For that matter, all of my feed and control
> lines come across the lawn in two runs of PVC conduit, which is buried only
> about 3 inches deep, and it has stayed put so far through one very hard
> winter and two average ones.
> Am I missing something?
Good question, Pete. In theory, the idea of going below the 
frost line is to prevent heaving of whatever is buried, so it doesn't 
reappear at the surface some day, from earth movement of the 
freeze/thaw cycles. For that reason, my conduit was buried about 2 1/2 
ft (frost line abt 18 inches here).

However, when my pool was built, both the propane guy and the 
electician ran their lines only about 6 inches down. When I 
inquired about that, they both gave the same answer: it's not required 
by code.
73 Barry
Barry Kutner, W2UP                            Internet:
Newtown, PA                                   Frankford Radio Club


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