point of connection [RE-wrenches]

[Larry Brown, Sunmountain]

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Wrenches,

We are doing an installation with 2 Sunny Boy 5000 inverters each  
requiring a 30 amp 2 pole breaker.  The closest point of  
interconnection is outside the house on the supply side of the main  
service disconnect near the customer side of the utility meter.   
According to 690.64B on the load side we are limited to 120% of the  
busbar rating, which means we could not put 2- 30 amp backfeed  
breakers in the main 200 amp service panel.  But 690.64A does not  
state a limitation  of 120% .  So we are considering a 200 amp feed  
through panel, also recommended by our local electrical inspector,  
and then putting our 2-30 amp 2 pole breakers in this feed thru  
panel. Anyone have any comments on this method? What other methods  
are people using to make a supply side interconnection?

Larry Brown
Sun Mountain


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