geochurchi
Senior Member
- Location
 - Concord,NH
 
- Occupation
 - Retired electrician
 
Hi All, A 400 amp service with 2 200 amp disconnects to service panels,not exactly sure what size ground wire but I believe possibly 250, is 4 copper suitable between between the disconnects ?
	
		
			
		
		
	
				
			
				