How a Standby Generator Works
A standby generator is fundamentally different from the portable generators that many homeowners keep in the garage for emergencies. A portable generator must be manually deployed, requires a fuel supply that must be stored and managed, cannot be directly connected to your home’s electrical system without an interlock kit or transfer switch, and has a limited runtime based on the fuel it carries.
A standby generator, by contrast, is permanently installed on a concrete pad outside your home or business, connected directly to a natural gas or propane supply line, and wired to your home’s electrical system through an automatic transfer switch. When a power outage occurs, the automatic transfer switch detects the interruption in utility power within seconds and sends a signal to the generator to start. The generator reaches operating speed, the transfer switch disconnects the home from the utility grid and connects it to the generator, and power is restored to the home, all within approximately ten to thirty seconds of the outage occurring.
When utility power is restored, the process reverses automatically. The transfer switch reconnects the home to the utility grid, the generator runs through a cool-down cycle, and then shuts itself off. The entire transition happens without any action required from the homeowner.
Standby generators also perform automatic weekly self-test cycles where the unit starts and runs for a brief period to verify that it is in proper working order. This ensures that the generator will perform reliably when needed rather than discovering a maintenance issue during an actual outage.
Protecting Your Home from Outage Damage
For homeowners, the most significant financial risk of an extended power outage is often not the inconvenience but the property damage that can occur as a result. In cold climates, loss of heating during a winter outage can lead to frozen water pipes, which burst when they thaw and can cause catastrophic water damage throughout a home. A standby generator that maintains power to the heating system eliminates this risk entirely.
Food spoilage is another significant financial impact. The contents of a full refrigerator and freezer can represent several hundred dollars of food that spoils within a day or two of a prolonged outage. With a standby generator maintaining power to the home, refrigerators, freezers, and wine coolers continue to operate normally regardless of how long the utility outage lasts.
Home security systems, smart home devices, and network infrastructure that rely on continuous power are also protected by a standby generator, maintaining the security and connectivity infrastructure of the home through the duration of any outage.
Supporting Medical Equipment
For households where a family member relies on electrically powered medical equipment, a standby generator is not a convenience but a medical necessity. Oxygen concentrators, CPAP machines, dialysis equipment, motorized wheelchairs with charging requirements, and other life-critical devices cannot safely be interrupted by power outages. A standby generator provides the continuous power supply that these situations require without the limitations of battery backup systems that have finite runtime.
Business Continuity
For businesses, the financial impact of a power outage can be immediate and significant. A restaurant loses perishable food inventory and cannot serve customers. A retail store cannot process transactions or maintain refrigerated merchandise. A medical or dental office cannot see patients. A manufacturing operation goes offline. A hotel cannot operate its systems or serve guests.
Even for small businesses and home-based professionals, an extended power outage can mean lost client commitments, missed deadlines, and damaged professional relationships. A standby generator for a small commercial building or home-based business operation can be sized and configured to maintain exactly the systems and circuits that need to stay operational, making the investment highly targeted and cost-effective.
Sizing Your Generator Correctly
One of the most important aspects of the generator selection process is proper sizing. A generator that is too small will not be able to power all of the circuits it is connected to simultaneously and may be overloaded if multiple large appliances run at the same time. A generator that is significantly oversized costs more than necessary and may not run efficiently at low load levels.
At Pacific Northwest Construction Inc, we perform a load assessment for every generator installation. We review the electrical panel, identify the circuits and appliances that need to be backed up, calculate the load requirements during both normal operation and startup surges for motor-driven appliances like air conditioners and well pumps, and size the generator to handle those requirements with an appropriate margin of capacity.
For whole-home coverage in an average residential home, generators ranging from fourteen to twenty-two kilowatts are common. For larger homes with all-electric HVAC systems or homes with electric vehicle chargers that need to be backed up, larger units may be appropriate. For businesses, generator sizing varies widely based on the nature of the operation and the specific circuits that need to be maintained.
Fuel Supply Options
Most residential standby generators run on either natural gas or propane. Natural gas is the preferred fuel where it is available because it is delivered through the utility gas line and requires no storage or delivery management. The generator draws fuel from the existing gas supply without any action from the homeowner, and there is no risk of running out of fuel during an extended outage as long as the gas utility remains operational.
Where natural gas is not available, propane is the standard alternative. A propane-powered generator requires the installation or connection to a propane storage tank of appropriate size for the expected runtime requirements. Pacific Northwest Construction Inc coordinates all aspects of propane tank sizing and connection as part of the generator installation process.
The Installation Process
A complete standby generator installation involves site assessment and permit application, concrete pad construction, generator placement and anchoring, gas line installation or connection, electrical connections including the automatic transfer switch and connection to the home’s main electrical panel, and final commissioning and testing.
Pacific Northwest Construction Inc manages every aspect of the installation from start to finish. We pull all required permits, coordinate gas line work with licensed gas fitters, complete all electrical connections through our licensed electricians, and perform a thorough commissioning test before signing off on the installation.
Contact Pacific Northwest Construction Inc today for a free generator sizing assessment and installation estimate. We install generators from leading manufacturers including Generac, Kohler, and Briggs and Stratton throughout the region.
