How to Install a Solar Isolator Switch Safely and Correctly

Proper installation of a solar isolator switch is critical for the safety and longevity of your PV system. Here’s a basic step-by-step guide to help you perform a safe installation.

Step 1: Choose the Right Location

The switch should be installed in an accessible location, ideally close to the inverter or rooftop array, depending on regulatory requirements.

Step 2: Turn Off Power

Always disconnect the solar array and inverter before beginning any installation work.

Step 3: Secure the Mounting

Use screws and waterproof fittings to mount the isolator securely on a flat surface.

Step 4: Connect the Wiring

Follow the isolator’s wiring diagram and ensure polarity is correct. Use suitable DC-rated cables and connectors.

Step 5: Test the System

Once connected, check the switch function by toggling on and off and verifying the DC voltage response.

Installation should always be performed by a certified electrician following local regulations and manufacturer instructions.