On Apr 3, 7:21*pm, wrote:
Most homes have a 100A to 200A main breaker. *Industrial buildings and
farms often have a 300A or 400A main. *Factories with lots of electrical
machinery have multiple main panels, (often 3 phase), but what is the
largest main breaker that is sold?

In America
http://images.uk.ask.com/fr?q=air+bl...tart%253D0&qt=