Mark, with 394.17, if the 3" wire protection above a horizontal framing member is to keep plaster from accumulating around the wire, would there need to be protection above the top plate? There shouldn't be any plaster above the plate and I can't remember ever seeing a tube stacked over the one running through the top plate(s).
The code statement "Where passing through wood cross members in plastered partitions" sounds like fireblocking or diagonal blocking inside the wall stud bay.
394.30, "every 4 ½’ and at 6” minimum on each conductor coming to a tap, or splice." Shouldn't that be no more than 6" from the splice?
Within 150 mm (6 in.) of each side of each tap or splice
When I think of "acid" flux or acid core, I think of flux used for soldering sheet metal and those containers state not for soldering electrical connections. Should the wording be "rosin flux"?
steve
