What to Do Generator: A Practical Home Backup Guide
Learn what to do with a generator—from sizing and fuel choices to installation and maintenance. This step-by-step guide helps homeowners plan, install, and maintain a reliable home backup generator without guesswork.
Goal: transform 'what to do generator' into a practical, safe plan. This quick answer outlines how to determine needs, size a home backup generator, choose a fuel type, install with a transfer switch, and maintain it for reliability. Follow a step-by-step process to ensure continuous power during outages and protect your home.
Why you need a generator
Outages are unpredictable and can disrupt daily life in minutes. A home backup generator provides power to essential systems such as refrigeration, heating or cooling, lighting, and communications during outages. When you start planning a project to address what to do generator, you must assess your risk, the climate you live in, and the comfort level you want to preserve during a blackout. The Genset Cost team emphasizes that preparedness begins with understanding your routine and identifying the loads you deem essential. This isn't about powering everything; it's about protecting health, safety, and basic convenience when the grid goes dark.
In many homes, critical loads include refrigeration for food safety, sump pumps to prevent flooding, heating or cooling for comfort, and a reliable source of lighting and information (modems, routers). By prioritizing these loads, you can narrow down generator size and configuration. In this guide, we walk through sizing, fuel options, installation considerations, and ongoing maintenance—so you can approach the project with clarity and confidence.
- Identify outages you’ve experienced or anticipate.
- List appliances you want to back up and their usage patterns.
- Consider how long you must sustain power during a typical outage.
This foundation sets the stage for practical decisions about capacity, fuel, and installation.
Tools & Materials
- Tape measure(Measure space for outdoor equipment pad and clearance from doors, windows, and hazards.)
- Load calculator or wattage spreadsheet(Compile running and starting watts for your essential loads.)
- Voltage tester(Verify panel readiness and transfer-switch compatibility.)
- Personal protective equipment (PPE)(Gloves, eye protection, hearing protection for installation and testing.)
- Generator manual(Refer to manufacturer guidance for installation and maintenance.)
- Approved fuel container and storage plan(Only if storing propane or gasoline on-site; follow local rules.)
- Permits and documentation(Check local codes; retain permits and inspection records.)
Steps
Estimated time: 2-4 weeks total
- 1
Assess power needs and goals
Begin with a clear list of essential loads and daily routines. Estimate how many lights, devices, and appliances you want to run during an outage, and decide between a permanent standby system or a portable generator. Consider climate and seasonal power needs to set a realistic resilience goal.
Tip: Create a one-page load list with appliance names and preferred operating times. - 2
Size the generator and select fuel
Use your load list to calculate total running watts and surge watts. Choose standby or portable based on space, budget, and how you plan to manage fuel. Compare fuel options—gasoline, propane, and natural gas—by availability, storage, and ease of use.
Tip: Use a reputable load calculator and validate results against manufacturer ranges. - 3
Decide between standby and portable
A standby generator with an automatic transfer switch (ATS) powers loads automatically and is set outside your home. A portable unit is cheaper upfront but requires manual startup and external transfer methods. Your choice affects installation complexity and safety practices.
Tip: For full-house resilience with minimal manual steps, lean toward standby with ATS. - 4
Plan installation and electrical safety
Outline a layout for outdoor mounting, ventilation, and clearances. Determine whether you will install a transfer switch, a power inlet, or an external distribution panel. Ensure you have a licensed electrician involved to handle wiring, grounding, and permit compliance.
Tip: Never attempt to backfeed a panel without an approved transfer switch. - 5
Obtain permits and schedule inspections
Contact your local authority to understand permit requirements and inspection timelines. Prepare drawings or specifications from the generator manufacturer and the transfer switch installer. Keep copies of all permits for future maintenance or resale.
Tip: Schedule inspections early to avoid project delays. - 6
Install, connect, and test
Have the electrician install the outdoor unit, transfer switch, and panel connections. Verify grounding, ventilation, and clearance. Run a controlled test under load to ensure the generator maintains power as planned and safety interlocks function correctly.
Tip: Document test results and keep a maintenance log for reference.
People Also Ask
What is the first step to do when planning a generator?
Start with a load assessment: identify essential circuits and estimate their power needs. This helps you choose the right size and configuration.
Begin by listing essential loads and estimating their needs to guide sizing.
What’s the difference between portable and standby generators?
Portable units are mobile and require manual startup and a transfer method. Standby generators are fixed outside, with automatic transfer switches for seamless power.
Portables require manual startup; standbys switch on automatically when outages occur.
Do I need permits to install a generator?
Most areas require permits and inspections for safety and code compliance. Check with your local building department before starting.
Yes, permits are usually required and inspections may be needed.
What fuel type is best for a home generator?
The best fuel depends on availability, storage, and cost in your area. Natural gas is consistent if you’re connected; propane and gasoline offer flexibility but storage considerations apply.
Choose based on what's readily available and affordable in your area.
How often should I test my generator?
Run a test regularly—weekly or monthly—under load when possible, and perform a full load test at least once a year.
Test it regularly to ensure readiness, especially before peak outage seasons.
What maintenance does a home generator require?
Keep oil and filters clean, replace spark plugs as recommended, check battery health, and inspect the transfer switch and exhaust area for safety.
Maintain oil, filters, and battery; inspect the transfer switch and exhaust area regularly.
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Key Takeaways
- Assess essential loads before sizing.
- Choose standby with an automatic transfer switch for convenience.
- Plan fuel type based on availability and resilience.
- Obtain permits and schedule inspections to stay compliant.
- Test regularly and maintain fuel and oil levels.
