A standby generator starts on its own when the power goes out and runs the whole home or chosen circuits. Generator installation has become common in hurricane, ice storm and wildfire areas, where outages can last days.
The two safe options are a standby generator with an automatic transfer switch, or a portable generator connected through a manual transfer switch or interlock. Never connect a generator through an outlet.
When you need generator installation
- Long outages from hurricanes, ice storms or utility shutoffs
- Medical equipment that needs power
- Sump pumps, refrigerators and heating that must keep running
- Working from home
What the job involves
- Decide which circuits to power and size the generator.
- Choose natural gas, propane or portable fuel.
- Install the transfer switch at the panel.
- Set the generator on a pad at the required distance from windows and doors.
- Connect fuel, test and pass permits and inspection.
What affects the cost
Sifixit does not quote prices, because every job is different. These are the things that move the price up or down, so you can compare quotes fairly:
- Standby or portable with a transfer switch
- Generator size
- Fuel type and gas line work
- Transfer switch and panel work
- Distance from the panel and meter
- Permits and HOA rules
Insurance
Insurance does not usually pay for a generator, but it can protect against losses such as spoiled food, frozen pipes and a failed sump pump during outages.
Licensing by state
Rules differ a lot between states. Here is who licenses this work in the states Sifixit covers most. Always ask for the license number and check it with the state.
- Texas: Texas Department of Licensing and Regulation.
- California: Contractors State License Board, C 10 license.
- Florida: Electrical Contractors Licensing Board.
- Arizona: Registrar of Contractors.
- Nevada: Nevada State Contractors Board.
- Georgia: Division of Electrical Contractors.
- Colorado: Colorado State Electrical Board.
- Washington: Department of Labor and Industries.
Local help for generator installation
- Electrical in Boca Raton, FL
- Electrical in Bradenton, FL
- Electrical in Fort Pierce, FL
- Electrical in Sarasota, FL
- Electrical in Tampa, FL
- Electrical in West Palm Beach, FL
Quick answers: generator installation
Can I plug a generator into an outlet?
No. Backfeeding through an outlet can kill utility workers. Use a transfer switch or interlock.
How big a generator do I need?
It depends on what you want to run. An electrician can do a load calculation.
How far should a generator be from the house?
Follow the manufacturer and local code. Portable generators should be at least 20 feet away, away from doors and windows.
How long does installation take?
Often one to a few days, plus permits.
Who installs generators?
A licensed electrician. Sifixit can connect you with a local electrician.
Looking for generator installation? Call the number on this page to be connected with an independent local provider. For more background, see the Electrical Safety Foundation.
This site is a free service to assist homeowners in connecting with local service contractors. All contractors are independent and this site does not warrant or guarantee any work performed. It is the responsibility of the homeowner to verify that the hired contractor furnishes the necessary license and insurance required for the work being performed. All persons depicted in a photo or video are actors or models and not contractors listed on this site.
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