"Rick (W-A-one-R-K-T)" wrote in
news
On Mon, 16 Jul 2007 21:26:16 +0000, Owen Duffy wrote:

It is my view that there is a significant risk that an inadequate
lightning protection scheme may be much worse than doing nothing.

Owen, certainly optimal is better than sub-optimal, but I don't
understand why sub-optimal can be worse than nothing at all. So far
you have been exceedingly helpful and I have learned a lot. Can you
explain why something isn't necessarily better, and in fact can be
much worse, than nothing?



Rick,

I guess to some extent it goes to the meaning of do nothing.

If you did not install a lightning protection system, but only connected
antennas at a time of low risk, then you might be much better off than
trusing an inadequate protection scheme.

It does reach a point where the disconnect strategy is not convenient /
practical / effective, so you are faced with performing a risk assessment
and designing a solution to mitigate the high risk factor risks. (Risk
factor considers the likelihood of an outcome and the severity of an
outcome.)

Owen