On 5/17/2011 4:44 AM, dalej wrote:
> Myles, no problem.
>
> But just to clarify,
>
> A house was struck less than a mile from my QTH. Actually it wasn't the
> house, but a gas meter. The occupants could not return until the house was
> completely rebuilt months later. Nice house too.
>
> On my mothers property a lightning bolt struck a pine tree about 40 feet from
> her house, the tree was quite tall but by the time lightning was finished it
> was about 12 feet tall and parts of that large tree was scattered for a block
> around the house. The bolt moved on the ground, made it inside the house to
> an electrical outlet on the patio then took out a freezer and some other
> electrical appliances. The track was clearly visible as it burned a carpet
> leading right to that outlet. It was amazing. I have a video tape of it.
>
> Let me set the record straight. I know about TV transmission towers, radio
> towers, the Empire state building etc. The question was, was there anything
> to replace the ICE devices...From there we went on, and on...
>
> I think we're all pretty clear about lightning and it's effects. W8JI, which
> the link to his web page seems to have all the right answers so if I were
> inclined, that is how I'd pattern my lightning protection, but I choose to
> tempt mother nature and just disconnect every thing when I hear the distant
> rumble. If I happen to be away and forget to disconnect, well then I hope my
> insurance will cover, otherwise I am S.O.L. :( And that's about all I have
> to say on this subject. 73 Dale
I hope when you disconnect things inside you ground things outside.
A floating antenna or antennas make a tempting target for lightning and
from there it's a short jump to the house.
With the ground system here, I rarely disconnect anything and have had
no damage from numerous strikes to the tower. That's not to say I feel
immune with this system as I don't, but if I disconnect anything it gets
grounded.
4th photo down on http://www.rogerhalstead.com/ham_files/cablebox.htm
shows the initial entrance box. It's been replaced with a larger box,
more cables, more polyphasers and more grounds. The bare #2 copper
ground line on the far right caries through to the equipment inside the
house.
73
Roger (K8RI)
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