I look at these systems as "risk mitigation". Just the way my seatbelts and airbags don't "guarantee" I won't get hurt or killed if I have a car accident, I believe they increase my odds for survival. I always buckle up. I've never seen a warranty that comes with a new car that declares a guarantee of survival, yet I think seatbelts and airbags are a good idea.
It's hard to know what is a complete, or nearly complete, waste of money.
I see quite a few homes with metal spikes sticking up along the roof lines, which I assume are lightning arrestor systems. I have no idea what they cost, and how much added protection they provide. I may look into them though.
A golfing buddy of mine, when I told him about my TV, told me that when he lived in Texas he once lost all of the appliances in half of his house to a lightning strike.
Now that it's happened to me, I am more curious about how these things work, and how I might reduce the risk going forward.
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