Reliance Controls Corporation TWB2006DR Outdoor Transfer Panel Includes a 150A or 200A main circuit breaker with a 30A -125A generator breaker Eliminates dangerous backfeeds and electrical overloads Maximum generator running watts: 15,000 Provision for 4/8 branch circuits (four 1-inch spaces) Interlinked circuit breakers keep generator isolated from utility at all times Eliminates dangerous backfeeds and electrical overloads Provision for 4/8 branch circuits (4 one inch spaces). Maximum generator input amps-60. Single phase Made in USA