Helpful Information: How a generator works Questions to ask when installing a home standby generator Cummins/Onan 12kw Generator 60 KW Onan Generator Installation Home standby delivery to your home Cummins/Onan 80kw Generator   Holt Electrical Contractors Gaithersburg, MD 20878 phone: 301-349-2980 1-800-HOLT 4 POWER 1-800-465-8476 fax: 1-301-349-2987 © 2010 Holt Electrical Contractors Inc.

HOW A GENERATOR WORKS Standby Generator Systems are permanently installed outside your home or business.  They are connected directly to the natural gas or propane supply and never have to be re-fueled by hand.  Whether you are home or away, a standby generator system will provide you with instant protection from power outages. Advanced electronics continually monitor utility power. When an outage occurs, it starts the generator and automatically switches from utility power to generator power.  Electrical power is restored without effort in seconds. When utility power is restored, the system senses it; transfers service back to the utility, shuts down the generator and resumes monitoring.