I ran a sub-panel to a garage that is 25 feet from the main residence. It is a 100 amp sub-panel with 16 spaces. It is a lug panel with the main breaker in the residence at the main panel. my question is do I need a disconnect (main breaker) in the sub-panel? I already missed having a grounding rod for the sub and don't want to miss anything else. Any advise would be appreciated. Thanks Dave