4000 Watt Portable Generator, CARB Certified Model: 5933 XP Series The undisputed workhorse of the portable market, Generac?s professional grade XP Series portable generators are engineered specifically with contractors and construction sites in mind. All models are powered by the Generac OHVI® engine designed specifically for generators and built to withstand extended job site use. FEATURES: ? Full panel GFCI protection is OSHA and NEC 2011 compliant ? Idle control to conserve fuel and reduce noise ? Durable construction with hardened 1.25" steel tube cradle and cast metal corners ? TruePower? technology provides clean, smooth operation of sensitive equipment ? Low oil pressure shutdown guards against engine damage ? On/off switch and fuel shut-off conveniently located on control panel ? Covered outlets for added protection from the environment. ? Maintenance kit included ? CARB, City of LA, and Massachusetts Certified