I try to not give Murphy any chance, ever, at all. Sometimes that
actually works out. ;-) The tension that is suddenly released, has to
dissipate SOMEwhere, the trick is to not be in the way when that
happens. Copper, because it is soft, uses less energy to stretch, but
... hanging cloths on the wire is good because it's a visual indicator
that the wire is still intact (the cloths are not on the ground) as well
as acting as a shock absorber should the wire fail.
Rick nhc
On 2/11/2016 12:56 PM, Jim Brown wrote:
On Thu,2/11/2016 12:42 PM, Rick WA6NHC wrote:
BUT one should move slowly to not shock load the wire or vehicle AND
(in addition to the excellent advice given) the safe zone is any
place further away than the total length of the wire plus at least 20%
When we've done this, my partner has driven the vehicle and I've been
the observer, carefully out of range. I've never been more than about
100 ft from the wire, and we typically start with about 200 ft. In the
half dozen or so times I've done that, the wire has simply broken
gracefully either near the tree trunk or near the vehicle. What nearly
always happens is that the wire breaks at a point of maximum stretch
along the length. That doesn't mean that it CAN'T snap around, but so
far it has not.
73, Jim K9YC
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