"w_tom" wrote in message
...

There is nothing cost effective adjacent to the computer. No
UPS nor power strip protector that will protect computer
hardware.

That's simply wrong/false. A good UPS or good surge protector WILL protect
a PC. Do you understand the concept of common mode?

Computer internal protection assumes the building
has implemented a 'whole house' protector on AC mains
connected less than 10 feet to central earth ground.

That's simply wrong/false. There is nothing magic about 10 feet
except that an electrical pulse travels about that far in 10 nanoseconds.
What do you suppose the risetime of a lightening bolt is and how
does that relate to that 10 feet?
Define "central earth ground" and what it's important characteristics are.
Where is the "central earth ground" on an airplane, car, ISS or on the
Antartic pole US base(over a mile thick cold pure ice)? Are all PCs and
electronics gadgets there doomed?
Ever heard on the concept of a Farady cage?

Protection as it was even done and well proven before WWII.

Yes, for those who actually understand it. What does the "central earth
ground"
look like at a major power station, substation or hydroelectric dam?
Where's it located?