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Casselberry · Seminole County
Generators & Backup Power

Generators & Backup Power in Casselberry

ZIP codes
3270732730

Interlocks, transfer switches and standby generators for hurricane season.

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About this service in Casselberry

Safe connection for portable generators with an interlock or transfer switch, standby generators, and load planning for hurricane season. Tell us what you want to keep running and we’ll connect you with an independent electrical contractor.

Most Casselberry homeowners choose a portable generator with an interlock kit or transfer switch, which keeps the refrigerator, fans and lights running without the cost of a standby unit. Older panels sometimes need replacing before an interlock can be installed. Generator connections require a permit.

Permits

In Casselberry city limits, permits go through City of Casselberry building department. Outside city limits, through Seminole County Building Division (Building Permits Online). The contractor normally pulls the permit.

Home standby generator on a concrete pad
Transfer switch next to a home electrical panel
At a glance

Casselberry

County
Seminole County
ZIP codes
3270732730
Permits inside city limits
City of Casselberry building department
Permits outside city limits
Seminole County Building Division (Building Permits Online)

Signs and situations

Hurricane-season outages

After Hurricane Milton in October 2024, tens of thousands of Orange County homes lost power. Restoration times vary by storm and utility.

Safe connection

An interlock kit or transfer switch keeps generator power from flowing back into utility lines, which can injure line workers.

Sized to what matters

List the circuits you need most: refrigerator, fans, medical devices, well pump, AC.

Permits

Generator connections need permits. Winter Park, for example, publishes a dedicated generator permit checklist.

Call about Generators & Backup Power

Backup power options
Portable + interlock/inletManual transfer switchStandby generator
How it startsYou start it and plug inYou start it and switch circuitsAutomatically
What it powersSelected circuitsPre-wired circuitsSelected circuits or the whole home
FuelGasoline or propane (stored)Gasoline or propaneNatural gas or propane

Before you hire

  • Ask for the Florida license number and check it on the DBPR license search
  • Ask whether a permit is needed and get the permit number
  • Get the estimate in writing, including what's not included
  • Make sure the final inspection passes and the permit is closed

Frequently asked questions

No. Feeding power into the house through an outlet with a double-ended cord (backfeeding) energizes your home’s wiring and the utility lines outside. It can electrocute utility line workers and anyone who touches the cord, and it can damage the generator and your appliances when power returns. The safe options are an interlock kit with a generator inlet, or a transfer switch, installed by a licensed electrician with a permit.

Still have a question? Call (844) 578-0475

Call for electrical help

ZIP codes
3270732730
Call (844) 578-0475