The Polyphasers are listed devices. Not UL but one of the several other
certified labs. At least they were some years ago. I don't remember the lab
that they used.
They may ask for UL listing but the courts decided some years back that any
certified lab listing is acceptable.
73
Gary K4FMX
>
> Interesting side note: 2011 NEC Article 810 says you have to have a
> "listed antenna discharge unit" unless the coax shield is grounded. As
> far as I can tell, none of the common 50 Ohm coax transient suppressors
> (Polyphaser, Alfa/Delta, I.C.E) are "listed." I've not seen a U.L.
> sticker on any of them. Guess if you had a really finicky inspector he
> might get you on that. But the Code gives you a way out by grounding the
> coax shield, which is good practice anyway.
>
> Shawn
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