The below quote is from the original post in this thread.
Lightening is the most unpredictable element there is. It does not matter if you are connected or disconnected. If it is going to take a path through your "stuff" then it is just going to happen
A friend of mine in Mississippi had a downstairs basement where around the periphery of the walls were work benches with power outlets, and on one wall was his HAM radio station. He was an engineer and worked on other peoples problem radios. In the middle of the room there was a 3 x 6' table of sorts where he would disassemble the radios. There were no wire hook-ups of any sort to this table. It was just free standing. One day while he was away, and he had taken the cover off of a radio on that free standing table, lightening hit his HAM antenna tower in the yard. The lightening came through his HAM Radio station, shot across the free standing table, entered a receptacle and took out the refrigerator upstairs.
Ham radio - one resistor
Refrigerator - circuit board
Radio setting on free standing table: Well he described it as looking like someone took an arc welder through the middle of it. Totally destroyed.
So pull jacks up, leave them down, do whatever one has to do, but just remember the lightening will make up its own mind on where it wants to go.
Another food for thought, and I have had this discussion with electronic/electrical engineers also.
Everyone states that lightening takes the least resistance to ground. So let us say for the sake of argument that you put an 8 foot copper ground stake in the ground to ground your rv, equipment, house, etc. Now then, lightening happens to strike close by. It goes to ground. Isn't your ground stake susceptible to picking up that strike and then traveling through your grounded "stuff?" Just food for thought.
Originally Posted by Wire Wrat
We live in the western end of the Florida panhandle. Lightning is a very common occureance here. Durring thunder storms, we disconnect the microwave, and computers by throwing the breaker switches at the fuse box. Our travel trailer is connected to shore power by an outlet on the side of the house. Do any of you seasoned trailer owners disconnect the shore power durring bad weather?