Generator Inlet & Automatic Transfer Switch Installation
Service Details
What Is a Generator Inlet & Transfer Switch?
A generator inlet (also called a power inlet box) is a weatherproof, outdoor-rated receptacle permanently mounted to the exterior of your home. It allows you to safely connect a portable generator to your electrical panel using a heavy-duty power cord — without the dangerous and illegal practice of “backfeeding.”
A transfer switch is a critical safety device that disconnects your home from the utility grid before allowing generator power to flow into your system. This protection is required by NEC Article 702 to protect utility workers from electrocution caused by power backfeeding into the lines.
Types of Transfer Switches We Install
- Manual Transfer Switch (MTS): A cost-effective solution where you physically flip the switch to activate generator power.
- Generator Interlock Kit: A code-compliant, mechanical slide plate installed on your existing panel that prevents the main breaker and generator breaker from being on at the same time.
- Automatic Transfer Switch (ATS): Ideal for standby generators; it monitors utility power 24/7 and switches to backup power within seconds of an outage. We work with Generac, Kohler, Cummins, and Briggs & Stratton.
Our 7-Step Installation Process
- Site Assessment: We calculate your electrical load to determine if you need a 30-amp or 50-amp inlet.
- Permits & Compliance: We handle all local permits and ensure compliance with NEC standards.
- Inlet Box Mounting: We install a weatherproof NEMA L14-30 or L14-50 twist-lock inlet on your exterior wall.
- Switch Installation: We install your chosen manual switch, interlock kit, or ATS.
- Professional Wiring: Heavy-duty copper wiring is run in conduit, sized perfectly for your generator’s ampacity.
- Testing & Training: We test the system under load and show you exactly how to operate it safely.
- Final Inspection: A licensed inspector signs off on the work, protecting your home’s value and insurance.
“Improper generator wiring is a leading cause of house fires and utility worker accidents. Never hire an unlicensed contractor to skip the permitting process—safety is non-negotiable.”
Frequently Asked Questions
How much does installation cost?
Costs vary based on the type of switch and panel complexity. We provide free, transparent estimates.
Do I need a permit for a transfer switch?
Yes. In virtually all municipalities, a permit is required. our team handles the entire process for you.
What size inlet do I need?
Most portables use a 30-amp inlet, while larger units require 50-amp. We’ll verify this during your assessment.
Protect your home and family before the next storm. Contact us today for a professional generator hookup estimate.