Generator Installation

Generator Installation in SeaTac, WA — Whole-Home Standby Power

Whole-home and standby generator installation to keep your property powered during outages.

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Power outages in the Pacific Northwest can last hours or days, especially during winter storms. A permanently installed standby generator ensures your home stays powered — automatically — the moment the grid goes down. Big State Electricians installs whole-home generators and transfer switches with expert wiring and full code compliance.

Standby Generator vs. Portable Generator

Portable generators require manual setup, produce carbon monoxide risk if used improperly, and can't power your whole home safely. A standby generator is permanently installed outside your home, connects to your natural gas or propane supply, and activates automatically within seconds of a power outage — no manual intervention required. We install automatic standby generators from leading brands including Generac, Kohler, and Briggs & Stratton.

Automatic Transfer Switch Installation

A transfer switch is the critical safety component that connects your generator to your home's electrical system while preventing backfeed to the utility line. Automatic transfer switches detect grid failure and switch your home to generator power in seconds. We also install manual transfer switches and interlock kits for customers who prefer manual control.

Portable Generator Hookup

If you already own a portable generator, we can install a transfer switch or generator inlet box that lets you connect it safely to your home's electrical system without extension cords — a cost-effective alternative to full standby installation.

Service Highlights

  • Whole-home standby generator installation
  • Automatic transfer switch installation
  • Portable generator hookup and inlet installation
  • Generac, Kohler, Briggs & Stratton compatible
  • Natural gas and propane generator wiring
  • Full permit and inspection coordination

Generator Installation FAQs

What size generator do I need for my home?

A 10–14kW generator covers essential circuits. A 20–22kW unit can power a whole home. We'll assess your load and recommend the right size.

How long does generator installation take?

A complete standby installation typically takes 1–2 days including concrete pad, transfer switch, gas connection, and electrical hookup.

Do I need a permit for generator installation?

Yes. Generator installation requires an electrical permit and in most jurisdictions a gas permit as well. We coordinate and pull all required permits.

Can you install a transfer switch for my existing portable generator?

Yes. We install manual transfer switches, interlock kits, and generator inlet boxes to allow safe connection of portable generators to your panel.

How does a standby generator turn on automatically?

The automatic transfer switch continuously monitors the utility line. When it detects power loss, it signals the generator to start and transfers your electrical load within 10–30 seconds.

Stay Powered — No Matter What

Ask us about generator installation options and get your free estimate today.