[TowerTalk] Fw: LP/PQ Message regarding lighting damage

[Jim Brown]

On Sun, 23 Aug 2009 08:08:58 -0700, jimlux wrote:

>Is it UL listed? The data sheet doesn't show any NRTL listings or 
>approvals.

A UL Listing MIGHT be needed to satisfy building codes (if those 
codes require a protector), but it probably does not mean they have 
verified that the product does anything useful. BTW -- I don't see a 
UL Listing indicated on Polyphaser products or website, or on ICE's 
website. 

In general, UL (and other safety labs) test to verify that a product 
will not start a fire, will not burn or contribute to flame spread, 
and cannot not CAUSE electrical shock. For example, UL 1449 applies 
to surge suppressors, and does not require that the unit be 
effective. However, there are OPTIONAL tests (called Adjunct Testing) 
in UL1449 that DO test for effectiveness and endurance. See

http://www.surgex.com/adjuncttesting.html  

I have not studied UL1449, and I don't know if it applies to products 
like lightning arrestors for communications circuits. 

73,

Jim Brown K9YC