Iwire:
Not to be a pain in the butt...is the tie wire that you use listed for use as a support for MC cable???

THe plenum tie wraps are mostly used for LV cables (yes, plenum rated LV cable). The MC is usually supported with Caddy clips to seperate drop wires that are "secured" to the ceiling grid with more Caddy clips. All of the above items are listed for the usage.
I don't have the Caddy book on hand right now.
John


John