Originally Posted by ABLE1
Originally Posted by hbiss
Quote
How does the surge protector take a hit that blows it out so it will save or give of itself to protect the downstream equipment when the Upstream is the KSU?? AND it was NOT damaged?? I jumpered the surge protection and all worked Ok.

Improper ground. The overvoltage was present on the ground wire, went back through the surge protectors and was taken care of by the internal surge protectors on the extension ports of the KSU thereby blowing the fuses in the surges.

-Hal

So your thinking that the #6 Copper cable that was run to the phone system by others was or is not connected properly to building structure or has some other bad connection??

Les

I would bet on it. Also, I've written extensively about system grounding and it should not be connected to the building structure. In many cases that would be the cause of the problem you encountered. The system and any surge protectors should be connected to the same electrical ground that the system line cord is connected to, preferably right at the receptacle.

-Hal

CALIFORNIA PROPOSITION 65 WARNING: Some comments made by me are known to the State of California to cause irreversible brain damage and serious mental disorders leading to confinement.