Generator Hookup & Transfer Switch Installation in Issaquah & East King County
Professional backup power solutions with safe generator installation and automatic transfer switches. Code-compliant, reliable, tested. 30+ years of expertise.
Professional Generator & Transfer Switch Installation
Protect your home during power outages with a professionally installed backup power system. Greg Dixon, licensed master electrician, handles complete generator installation, transfer switch setup, and all required inspections. We serve Issaquah, Bellevue, Redmond, Sammamish, Kirkland, Renton, Mercer Island, and surrounding areas.
Why You Need a Transfer Switch
A transfer switch is not optional—it's a critical safety device required by electrical code and essential for protecting your home, utility workers, and your backup power investment.
Safety First: Protecting Lives
Without a transfer switch, generator power can backfeed into the utility lines during an outage. This is extremely dangerous. Utility workers repairing downed power lines can be electrocuted by current coming from your generator. A transfer switch prevents this by physically disconnecting your home from the grid when the generator activates.
Code Requirement
Washington State electrical code and the National Electrical Code (NEC) mandate that all generators be connected through a transfer switch. Working without one violates code and voids insurance coverage if something goes wrong.
Protecting Your Equipment
A transfer switch ensures voltage regulation and prevents damage to your home's electrical appliances and systems. Without it, voltage surges and instability can destroy electronics, HVAC systems, and appliances.
Insurance & Liability
Any damage or injury caused by an improperly installed generator without a transfer switch is your liability. Insurance claims will likely be denied. Professional installation with proper permits protects you legally and financially.
Types of Generator Connections
We install all common backup power configurations. Each has different electrical requirements and use cases:
Interlock Kit (Manual Transfer)
A mechanical interlock prevents simultaneous connection of utility and generator power. You manually flip a switch to transfer between sources. Cost-effective, suitable for smaller portable generators. No automatic switching.
Manual Transfer Switch
A heavy-duty switch box allows you to manually select between utility and generator power. Typically runs 200A for whole-house coverage. Requires you to start the generator and flip the switch during outages. Standard for portable generators.
Automatic Transfer Switch (ATS)
Detects power loss and automatically transfers to your standby generator within seconds. Restores essential circuits instantly during outages. Requires a permanently-installed generator. More expensive but maximum convenience and protection.
Selective Load Transfer
Smaller automatic switches that power only critical circuits (lights, refrigerator, heating) during an outage. Saves generator fuel by running fewer appliances. Ideal if you want automatic backup without a whole-house solution.
Portable vs. Standby Generators: Electrical Differences
Portable Generators - Usually 5,000-15,000 watts, powered by gas or propane. Easily moved between locations. Requires manual setup, fuel management, and manual transfer switching. Typical installation: outlet-mounted transfer switch connecting generator to home's main panel.
Standby Generators - Permanently installed, 10,000-48,000+ watts, powered by natural gas or propane. Automatically activates during outages. Requires dedicated circuit from generator to home's electrical panel, plus permanent gas line. Includes automatic transfer switch.
We handle installation for both types. Standby systems require more electrical work (larger conduit, proper grounding, breaker sizing), but offer unmatched convenience and reliability.
Our Generator Installation Process
1. System Assessment - We evaluate your home's electrical load, panel capacity, generator location, and fuel availability. We discuss your budget and backup power needs.
2. Design & Permitting - We design a system that meets code requirements and your needs. We handle all permit applications and coordinate with local inspectors.
3. Preparation - For standby generators, we coordinate generator delivery and installation by the equipment company. For portable generators, we prepare your home for connection.
4. Electrical Installation - We run conduit and wire from the generator to your electrical panel. For portable generators, we install a manual transfer switch. For standby systems, we install automatic transfer switches and disconnect equipment.
5. Panel Integration - We integrate the transfer switch into your main electrical panel, sizing breakers appropriately and ensuring proper grounding and bonding.
6. Testing & Commissioning - We test the system under load, verify automatic transfer operation (if applicable), and confirm all safety devices function properly.
7. Final Inspection & Documentation - We arrange final inspection and provide you with all permits, test results, and operation documentation.
Service Area
We serve all of East King County, including: Issaquah, Bellevue, Redmond, Sammamish, Kirkland, Renton, Mercer Island, North Bend, Snoqualmie, Fall City, and Maple Valley. We handle generator projects of all sizes.
"Greg installed our standby generator after we experienced a week-long power outage. The system works flawlessly—we barely notice when it kicks in. He managed the entire project, pulled permits, and everything is inspected and insured. Best peace of mind investment we've made."
— Janet & Michael R., Sammamish, WA
Frequently Asked Questions
How much does generator installation cost?
Costs vary widely based on generator type and size. A portable generator with manual transfer switch installation: $800-$2,000. A 20-24kW standby system with automatic transfer switch: $4,000-$8,000+ (plus generator cost). We provide free estimates and can work within your budget.
Is a transfer switch required by law?
Yes. Washington State electrical code requires a transfer switch for all generator installations. Without one, the installation is illegal and dangerous. Your homeowner's insurance will not cover incidents involving an unpermitted, non-code-compliant generator setup.
Can I install a generator myself?
Generator electrical installation requires a licensed electrician. Improper installation risks electrocution of utility workers, equipment damage, and legal liability. We recommend hiring professionals for this critical safety work. Call us for a free quote: (425) 766-4793.
What size generator do I need for my home?
This depends on which appliances you want to run during an outage. A basic system powering lights, refrigerator, and heating might need 10,000-15,000 watts. A whole-house system running everything requires 20,000-40,000 watts. We'll assess your home and recommend an appropriately-sized system.
How long do generators last, and what maintenance do they need?
Quality standby generators last 20-30+ years with proper maintenance. They require monthly load testing and annual service. Portable generators typically last 5-10 years depending on use. We can recommend maintenance schedules and reputable service providers.