would'nt you say 220-12(b) is a good 'guide' as the 'load' can be indiscriminatly changed easily?
tracks are not a 'fixed' load that do not change. 410-101(b) and 220-12(b) seem to almost conflict here read side by side.
could each head possibly fall under 220-3(b)(11) @ 180W per?
this just does not sit right.
[This message has been edited by sparky (edited 07-30-2001).]