I installed a 250' single pair with shield cable for a greenhouse controller. This connects to a USB on a PC in a remote building. I am looking for protectors that I can install at each end and would prefer to use AC ground as there are no earth grounds near either end. Can this be done and what should I use?


Merritt

Business Telephones & Equipment + Commercial Audio/Video Products
Commercial Communications . . . Turner, Maine
If it was built after 1980 don't expect it to work right.