I agree on the AFCI issue, there are only a few of those who post negative messages that call attention to some problems with their use, installation and cost.
The thread, Joe, is focused on the validity of the product. Our trade has no Ralph Nader to advocate & or critique what is marketed.
As a matter of disscusion, our trade is a free-for-all for just about any widget manufacturer who can cough up a lobbyist to sit on a CMP.
Concise inquiry should not be confused with resistance due to economic or educational lacking.
With a greater number of circuits in the average U.S. installation than here, you have my sympathy when confronted with a poorly marked panel.
Paul, as a contractor, the world's lack of compliance is my $$$, don't be sorry, circuyit tracing is really not that all that dirty of a job