Edited Post
 
Looking for opinions on sizing components. House and backup battery banks are 3290 and 650 CA respectively, wired with 2/0 wire, and fused at 250A. To connect the various loads to the banks I plan to tie Blue Sea ANL fuse blocks together with a 1/8" x 3/4" copper bus bar spanning the blocks.
 
Is there a optimum size for a bus bar?
	
		
			
		
		
	
								Looking for opinions on sizing components. House and backup battery banks are 3290 and 650 CA respectively, wired with 2/0 wire, and fused at 250A. To connect the various loads to the banks I plan to tie Blue Sea ANL fuse blocks together with a 1/8" x 3/4" copper bus bar spanning the blocks.
Is there a optimum size for a bus bar?
								
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