fyrmnk Posted December 23, 2004 Report Share Posted December 23, 2004 Hi all, Home has 100A breaker in the main on #2 aluminum feeding a sub panel in a detached garage. Originally I was thinking this was OK since the garage is independent with its own ground system (no metal contact such as sidewalk, phone line, grounbd wire, etc.) back to the home, therefore making it essentially having its own main service. Then I decided it should be considered a branch circuit same as a standard sub panel and not be any larger then a 70A breaker for the wire, since #2 aluminum on a branch is 70A max. Right or left brain right on this one? Thanks Quote Link to comment Share on other sites More sharing options...
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