Square-D boxes have been around forever and are everyone's standard - odd to think that they might still pass current when the switch is "off".
On the other hand, the CPSC is the agency that wanted to ban light motorcycles used by youngsters because the battery terminals were made of lead, and they were afraid that the tots riding them (after removing their helmets and gear) might start chewing on the terminals and get lead poisoning ... Hope this isn't the same sort of far-out weirdness. Once they get started, you can't trust 'em ....
Lannis