John Trovato writes in part:

> The most stringent test requirements that
> I know of are those outlined in the Australian deviations to 950, which
> require both the dielectric and impulse tests to be applied.  Australia
> used to require supplementary insulation between TNV and SELV, even on E1
> circuits, based on 250 volts.  That is no longer the case with amendment 4.

In Australia you can have a SELV NTU installed at the customer premise. 
I don't know if an extra charge is involved.  Apparently amd. 4 catches
up with this route.  You can always be assured permission to connect in
any CP installation if you have supplementary @250V.
-- 
Dan Roman           | mailto:[email protected] http://www.dialogic.com
Compliance Engineer | Personal: mailto:[email protected]
Dialogic Corp, NJ   | Homebrew is better brew!

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