MJ:
That sounds like a lot of work to "tap & fuse down" for the "hot" leg for 120 volt.
If you are "pulling a neutral" why not just pull a hot with it?? #12 or #10 THHN is hell of a lot cheaper than a tap & in-line fuse. Also, more than likely, you may be violating the UL Label and/or listing for the disco. The lugs in most disco's are only listed/rated for 1 conductor, so how would you make the "tap".
John
