On Tuesday, October 20, 2015 at 12:28:34 PM UTC-4, westom wrote:
On Tuesday, October 20, 2015 at 10:59:23 AM UTC-4, trader_4 wrote:
He makes the ridiculous claim that telephone eqpt is only protected
at the point of entry to the building. In fact, they use the same
strategy as the IEEE recommends, ie a tiered protection approach.
That includes MOVs on the line cards inside the building.

How many times must one explain 'tiered protection' to you? Protectoin is not Kleenex for water from your eyes. Stop being so emotional.

Each tier in a CO is another ground layer.

Really? There is an earth ground on the line cards? In days gone by
you denied there was any protection on the line cards period.


Every protection 'tier' is defined by its ground - not by protectors.

Really, then like Mark said, how is surge protection on an airplane even possible?



Homeowners have two layers. A 'primary' surge protection layer at the pole. A 'secondary' protection layer at the service entrance (main breaker box or meter).


Again, totally inconsistent with the IEEE guide.



Every protection layer is only defined by what absorbs energy - earth ground. Had you ever been in a CO, then you knew of special care so that every protection layer - the grounding - is not compromised. You deny only to argue - not because you have any experience.


Tell us all how surge protection is possible on an airplane. Where is
the earth ground? That's enough for now. So many contradictions your
head must be about to explode.