I know that if you are using stranded conductors with more then 7 strands you must bunch tin them or use a proper compression clamp. My question is WRT the wires in the Fire Alarm devices.
Say for example a listed device such as a supervised sprinkler valve. Inside the listed device is a micro switch with stranded copper conductors. Must these also be tinned even though it is a listed device or does that just apply to the condustors that we are bringing to the device?
I know that it would make sense to tin them but if it is required then why don't the manufacturers do it?
Just wondering if i have to get the soldering iron out to tin the conductors that are part of the listed assembly. Any help appreciated.
Thanks!
