I know the basics of wiring more than one main disconnects. The disconnects must be in series, line and load side should be in different raceways. Now what I don?t know is the standards if any for fusing and locating your first disconnect. Ie do I locate the first disconnect in the series outside of the main panel and then run it to the main panel disconnect or should the first disconnect always be located in the main panel. Also should both disconnects be fused, or just fused after the first disconnect, or after the second disconnect.