[TowerTalk] [Bulk] Antenna to Shack Ground Connection

[Jim Lux]

On 2/3/15 7:35 PM, Gary Schafer wrote:
>
> 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.
>
>

Code only says "listed" and any (Nationally) Recognized Testing Lab will 
do. UL is one of many NRTLs. TUV is another..

NRTL is actually an OSHA term/requirement, but everyone uses it by default.

It's even a bit broader than that (depending on the jurisdiction)..
Los Angeles County (Sec 83-7) says:
Electrical testing certifications will be accepted as complying with the 
requirements of this Code only when such certifications are issued in 
accordance with this Code and nationally recognized standards by 
electrical testing laboratories which have been accredited by the Chief 
Electrical Inspector.
The Chief Electrical Inspector recognizes three types of electrical 
testing laboratories:
- nationally Recognized Testing Laboratories; and
- Field Evaluation Organization Laboratories; and
- Calibration Laboratories.


It used to be that the Field Eval Org Lab just had to have a PE on 
staff, but I see that the code just changed to require them to be a 
NRTL. (Which makes the difference between NRTL and FEOL not much, eh?)

The Cal labs have to have a PE on full time staff, and also be approved 
by the Chief Electrical Inspector.


Ultimately, it comes down to "whatever the inspector wants"