In the past, I installed one of these on the end of a gell filed 50 pair but the other end was terminated onto the bix frame at the other end. That end "wiring room" housed all the terminations for all the small business. I did not see any surge protection terminated from the outdoor black filled gel cable.

I want to know if its standard for only one end "the small business" to have a surge box like this ?
https://www.surgetech.com/products/pdf/ST692_CH_SERIES.pdf


I don't do residential wiring but, some one ask if I can terminate 40 feet of gel cable between two townhouse buildings. In a case like this, probably would be good idea to install two surge boxes? I figure in the last install, the CO had built in surge protection so thus, no box was needed in the MDF wiring room.

Lastly, other then NEDCO...if they have one of these, who else sells them in BC Canada?

Thanks