There is a company called Com-Omni (sorry, the book is at the other
job), that does alot of lighting protection devices and has some good
discussions on protection.  I'll get the 800 number if ppl need it.


> I am putting together a small network of PIC data loggers, at the top
> of
> ten foot poles, RS485 networked together, buried power and net cables.
> What should I worry about re lightning, etc, and how do people
> typically
> protect devices (not to mention the expensive PC at the end of the
> network:
> I did absorb the advice about opto-isolation for the PC).  Pardon me
> if
> this is a previously beaten horse, I'll search the archive too.
>
>